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315 verified Gastroenterologists in Orange County, CA
Zocdoc verifies all providers before they can appear in Zocdoc search results. Every provider that appears in search is open to new patients.
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Availability last updated 06/22/2026
Availability last updated 06/22/2026
Gastroenterologist
4.84
·32 reviews
1 mi · 1010 W. La Veta Ave., Ste 570, Orange, CA 92868
Accepts Aetna, BlueCross BlueShield, Cigna + 7 more
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
**ALL EXISTING PATIENTS MUST CALL THE OFFICE TO BOOK THEIR FOLLOW-UP APPOINTMENTS** Dr. Alaa Abousaif has been in private practice for the past fifteen years. He has completed extensive advanced training in treating a multitude of digestive disorders and possesses the expertise in utilizing the lat...Click to read more
Next available: Mon, Jun 29
Gastroenterologist
4.70
·30 reviews
1 mi · 1010 W. La Veta Ave., Ste 570, Orange, CA 92868
Accepts Aetna, BlueCross BlueShield, Cigna + 7 more
Accepting new patients · Highly recommended ·
Read bio
**ALL EXISTING PATIENTS MUST CALL THE OFFICE TO BOOK THEIR FOLLOW-UP APPOINTMENTS** Ousama Alkhatib, MD is a board-certified physician specializing in Gastroenterology, practicing medicine in Orange, California. He completed medical school at Faculty of Medicine in Alepp, Syria, completed his inter...Click to read more
Next available: Mon, Jun 29
Gastroenterologist
5.00
·31 reviews
1 mi · 1010 W. La Veta Ave., Ste 570, Orange, CA 92868
Accepts Aetna, BlueCross BlueShield, Cigna + 7 more
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
**ALL EXISTING PATIENTS MUST CALL THE OFFICE TO BOOK THEIR FOLLOW-UP APPOINTMENTS** Dr. Haig Najarian is a distinguished gastroenterologist. He practices at UNIO Specialty Care in Orange and Los Alamitos, CA. He is dedicated to delivering thorough gastrointestinal care. He works closely with patie...Click to read more
Next available: Wed, Jul 15
Gastroenterologist
5.00
·2 reviews
The doctor was friendly and listened to my concerns. He took his time answering my questions. He didn't make me feel like I HAD to do a certain treatment and that I had a say in my healthcare. When I explained my previous not-so-pleasant experience with bowel prep, he offered 3 recommendations and I...Click to read more
1 mi · 1140 W La Veta Ave, Ste 555, Orange, CA 92868
Accepts Aetna, BlueCross BlueShield, Cigna + 6 more
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. James Hwang is a board-certified gastroenterologist with extensive experience across multiple healthcare systems, including Kaiser Permanente Sacramento, Enloe Medical Center, and Rio Grande Gastroenterology. He completed his gastroenterology fellowship and internal medicine residency through Su...Click to read more
Next available: Tue, Jul 21
Gastroenterologist
4.94
·16 reviews
1 mi · 1010 W. La Veta Ave., Ste 570, Orange, CA 92868
Accepts Aetna, BlueCross BlueShield, Cigna + 7 more
Accepting new patients · Highly recommended ·
Read bio
**ALL EXISTING PATIENTS MUST CALL THE OFFICE TO BOOK THEIR FOLLOW-UP APPOINTMENTS** Dr. James J. Lee has a private practice located in Orange, California and is a clinical assistant professor at the University of California, Irvine. In the last two decades, Dr. Lee has been involved in numerous end...Click to read more
Next available: Thu, Jul 23
Gastroenterologist
5.00
·30 reviews
1 mi · 1010 W. La Veta Ave., Ste 570, Orange, CA 92868
Accepts Aetna, BlueCross BlueShield, Cigna + 7 more
Accepting new patients · Highly recommended ·
Read bio
Dr. Hardeep M. Singh grew up in Orange County and obtained his undergraduate and medical degrees from USC. While completing his internship and residency at Cedars Sinai Medical Center, Dr. Singh received the Leo Rigler Award for his academic achievement. While completing his fellowship in Gastroente...Click to read more
Next available: Wed, Jul 29
Internist
1.5 mi · 2141 W Orangewood Ave, Orange, CA 92868
Accepts Aetna, Medicare
Also offers video visits · Accepting new patients ·
Read bio
Dr. Bardia Sadr is a board-certified internal medicine physician with more than 15 years of experience caring for adults in the Irvine community.Click to read more
Next available: tomorrow
Internist
1.5 mi · 2141 W Orangewood Ave, Orange, CA 92868
Accepts Aetna, Medicare
Also offers video visits · Accepting new patients ·
Read bio
Over 20 years of experience caring for adults in the Orange County community. Affiliated with Mission Hospital, Fountain Valley Regional, and MemorialCare Orange Coast Medical Center.Click to read more
Next available: tomorrow
Gastroenterologist
4.94
·77 reviews
I had a great experience with Dr. Paez and his receptionist, Urelly. They were so welcoming and made me feel very comfortable. Dr. Paez answered all of my questions and really took time with me. - Sep 13, 2024 by Stephanie S.Click to read more
7 mi · 16677 E Yorba Linda Blvd, Yorba Linda, CA 92886
Accepts Aetna, BlueCross BlueShield, Cigna + 9 more
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Marco A. Paez was born in Miami, Florida. He attended Miami-Dade College and Florida International University (FIU). He graduated with a competitive degree in Biological Sciences with a minor in Psychology. He then matriculated at Georgetown University School of Medicine in Washington, D.C. wher...Click to read more
Next available: Wed, Jul 1
Gastroenterologist
4.72
·76 reviews
Yes I will go back. Dr.Q. Was very nice & comfortable to talk to . - Jun 18, 2025 by Anna D.Click to read more
5.5 mi · 2621 S Bristol St, Ste 202, Santa Ana, CA 92704
Accepts Aetna, BlueCross BlueShield, Cigna + 20 more
Also offers video visits · Accepting new patients ·
Read bio
*Please verify your insurance coverage prior to scheduling an appointment. Patients with HMO plans must obtain prior authorization before being seen at our practice. Dr. Essam Quraishi is the founder and President of Gastrointestinal and Liver Consultants, Inc. Dr. Quraishi graduated from medical s...Click to read more
Next available: Mon, Jul 27
Family Nurse Practitioner
5.00
·18 reviews
Outstanding care from start to finish. The clinic staff was professional and efficient, and Dr. [Name] was attentive, thorough, and genuinely caring. If you're looking for a trusted healthcare provider, this is the place to go. Highly recommended! by DOClick to read more
3 mi · 218 W 4th St, Santa Ana, CA 92701
Accepts Aetna, BlueCross BlueShield, Cigna + 4 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
I was raised in the Redlands/Mentone area of the empire from which I graduated from CSU San Bernardino with my Bachelors in Psychology. I’ve been moved to Sacramento to attend Samuel Merritt University for both RN and NP programs. My first two years I worked solely within FQHC population and have sp...Click to read more
Next available: tomorrow
Nurse Practitioner (Gastroenterology)
5.00
·30 reviews
1 mi · 1010 W. La Veta Ave., Ste 570, Orange, CA 92868
Accepts Aetna, BlueCross BlueShield, Cigna + 7 more
Accepting new patients · Highly recommended ·
Read bio
**ALL EXISTING PATIENTS MUST CALL THE OFFICE TO BOOK THEIR FOLLOW-UP APPOINTMENTS** Daniel Chiu is a Board Certified Nurse Practitioner who graduated from Azusa Pacific University with his Master of Science in Nursing with an emphasis in adult gerontology. He was honored with an Outstanding Graduat...Click to read more
Next available: Mon, Jul 6
Gastroenterologist
4.97
·93 reviews
Dr Steinhauer was amazing. She was very informative answered all my questions and listened to my concerns. I highly recommend her. - Jan 16, 2025 by John B.Click to read more
7 mi · 16677 E Yorba Linda Blvd, Yorba Linda, CA 92886
Accepts Aetna, BlueCross BlueShield, Cigna + 10 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Christina Steinhauser is a former Chief of Medicine and Chief of Gastroenterology at Nellis Air Force Base, a current assistant professor at the Uniformed Services University of Health Sciences, and a former assistant professor at the University of Nevada, Las Vegas. She earned her Doctor of Ost...Click to read more
Next available: Fri, Jul 17
Family Nurse Practitioner
4.67
·70 reviews
She was very sweet and listened to all my concerns! Super validating! - Nov 28, 2025 by Kennedy S.Click to read more
3 mi · 218 W 4th St, Santa Ana, CA 92701
Accepts Aetna, BlueCross BlueShield, Cigna + 4 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
I’ve been caring for patients for over seven years, first as a registered nurse and now as a nurse practitioner since 2023. My experience spans both hospital and outpatient settings, with the last four years focused on primary care for patients of all ages, along with urgent care in both virtual and...Click to read more
Next available: Thu, Jun 25
Internist
5.00
·10 reviews
Dr. Tran addressed all of my concerns. I felt reassured and comfortable at the and of our visit. by KBClick to read more
6.5 mi · 2000 E Chapman Ave, Ste 100, Fullerton, CA 92831
Accepts Aetna, BlueCross BlueShield, Cigna + 10 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Alexander Tran is an internist at Pyo Clinic in Upland, CA. He also offers virtual consultations. He welcomes adult patients with common illnesses, chronic diseases, and minor injuries that affect their quality of life. Dr. Tran understands patients' conditions and prepares individualized treat...Click to read more
Next available: tomorrow
Gastroenterologist
4.76
·17 reviews
Highly recommend and contacting the office is super accessible and straightforward - Mar 14, 2026 by Jose F.Click to read more
10.5 mi · 18682 Beach Blvd., Ste. 150, Huntington Beach, CA 92648
Accepts Aetna, BlueCross BlueShield, Cigna + 7 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr Fleischman is a native of Maryland where he attended University of Maryland School of Medicine. He completed his Internal Medicine internship and residency at Emory University. During residency he developed a strong interest in Gastroenterology and Liver disease and subsequently completed his fel...Click to read more
Next available: Tue, Jul 7
Gastroenterologist
4.88
·196 reviews
Best out of 3 gi doctors I have seen so far explains thing better and provides more info - Jul 5, 2024 by Jason P.Click to read more
10.5 mi · 5455 Garden Grove Blvd Suite 230, Westminster, CA 92683
Accepts Aetna, BlueCross BlueShield, Cigna + 20 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
*Please verify your insurance coverage prior to scheduling an appointment. Patients with HMO plans must obtain prior authorization before being seen at our practice.Click to read more
Next available: Thu, Jul 9
Physician Assistant (Gastroenterology)
5.00
·6 reviews
5.5 mi · 2621 S Bristol St, Ste 202, Santa Ana, CA 92704
Accepts Aetna, BlueCross BlueShield, Cigna + 20 more
Accepting new patients · Highly recommended ·
Read bio
Sarah Levitt, PA-C, is a board-certified Physician Assistant, providing quality patient care at Gastrointestinal & Liver Consultants in Santa Ana, Irvine, Anaheim, and Westminster, California. She graduated from California State University Long Beach with a Bachelor of Science in Kinesiology Exerc...Click to read more
Next available: Mon, Jun 29
Physician Assistant
4.78
·174 reviews
The Dr was great, and everyone in the office was super sweet and helpful. - Sep 16, 2025 by Kristen B.Click to read more
12 mi · 369 San Miguel Dr, Ste 200, Newport Beach, CA 92660
Accepts Aetna, BlueCross BlueShield, Cigna + 42 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Rachel Roth PA-C is a compassionate, board-certified physician assistant who provides care for both adult and pediatric patients. She specializes in primary care, urgent care, GYN and women's health, dermatology, and general medicine. Rachel earned her Master's in Physician Assistant Studies from Te...Click to read more
Next available: Thu, Jun 25
Physician Assistant
4.80
·147 reviews
Incredibly helpful and so non judgmental with problems that you face - Oct 16, 2024Click to read more
12 mi · 369 San Miguel Dr, Ste 200, Newport Beach, CA 92660
Accepts Aetna, BlueCross BlueShield, Cigna + 42 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Ms. Ashlee Shapiro is a skilled physician assistant offering in-person services at Horizon Medical Clinic in Newport Beach, CA, and also provides virtual consultations. She earned her Master’s in Physician Assistant Studies from Quinnipiac University, equipping her with comprehensive training to del...Click to read more
Family Physician
4.05
·20 reviews
Overall this was a pretty productive doctor's appointment, I felt very heard and while she ran through things quickly she made sure to take the time to explain everything in depth. I also felt her knowledge of my medical conditions was a lot more up-to-date than previous doctors were which I find in...Click to read more
12 mi · 369 San Miguel Dr, Ste 200, Newport Beach, CA 92660
Accepts Aetna, BlueCross BlueShield, Cigna + 42 more
Also offers video visits · Accepting new patients ·
Read bio
Dr. Natalie Marino is a compassionate physician board-certified in Family Medicine. She practices both Primary Care General Medicine, as well as Dermatology. She received her Medical Degree, as well as a Masters in Public Health, from the University of Pittsburgh. She completed her residency trainin...Click to read more
Gastroenterologist
16.5 mi · 13768 Roswell Ave, Ste 219, Chino, CA 91710
Accepts Aetna, BlueCross BlueShield, Cigna + 5 more
Accepting new patients ·
Read bio
Dr. Arwa Zakaria is a highly trained gastroenterologist with extensive education and clinical experience. She earned her Doctor of Osteopathic Medicine degree from Lincoln Memorial University and completed her Internal Medicine residency at Greenville Health System, where she also served as Chief Re...Click to read more
Next available: tomorrow
Gastroenterologist
4.93
·150 reviews
I had a great appointment and would highly recommend - Jul 21, 2025Click to read more
12.5 mi · 3851 Katella Ave, Ste 205, Los Alamitos, CA 90720
Accepts Aetna, BlueCross BlueShield, Cigna + 9 more
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Seyedehsan (“Ehsan”) Navabi is a former Director of both the Inflammatory Bowel disease and Gastrointestinal Motility Disorders at the Rutgers New Jersey Medical School where he served as Assistant Professor of Gastroenterology. He obtained his medical degree from Tabriz University of Medica...Click to read more
Next available: Thu, Sep 10
Internist
4.56
·18 reviews
The visit went very well, the doctor was kind and listened carefully. by BQClick to read more
10 mi · 275 Victoria St, Ste 1E, Costa Mesa, CA 92627
Accepts Aetna, BlueCross BlueShield, Cigna + 10 more
Accepting new patients · Excellent wait time
Next available: Thu, Jul 2
Gastroenterologist
5.00
·6 reviews
I loved that I was taken serious right away and all labs were ran to rule out any possible diagnosis. I feel very confident in his care and knowledge - Jun 1, 2026 by Marissa A.Click to read more
16.5 mi · 13768 Roswell Ave, Ste 219, Chino, CA 91710
Accepts Aetna, BlueCross BlueShield, Cigna + 6 more
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Bhavesh Patel, MD, FACG Gastroenterologists in Los Angeles and San Bernardino county Co-Founder at Platinum Digestive Health Bhavesh Patel MD FACG, is a board-certified gastroenterologist at Platinum Digestive Health in Rancho Cucamonga, California. He enjoys caring for men and women of all ages, re...Click to read more
Next available: Tue, Jul 21
Family Nurse Practitioner
4.87
·251 reviews
It was right to the point of my concern and answers and successions were given right away, The answers relieved my concerns. by MFClick to read more
12 mi · 400 Newport Center Dr, Ste 301, Newport Beach, CA 92660
Accepts Aetna, BlueCross BlueShield, Cigna + 6 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
JAQUOLIN ESKANDR, NP NURSE PRACTITIONER Jaquolin Eskandr is a licensed and registered family nurse practitioner. She completed her Master's degree in Family Practice Nursing from California State University, Long Beach, CA. She has been in the nursing field since 2008 and is also wound care...Click to read more
Next available: Thu, Jul 2
Family Physician
3.00
·2 reviews
I did not see the doctor I booked the appointment with. I waited for nearly 30 minutes before the doctor saw me and then the doctor was in a rush to leave. - Mar 18, 2026Click to read more
14.5 mi · 1600 Pacific Coast Hwy, Seal Beach, CA 90740
Accepts Aetna, Cigna, Medicare + 4 more
Accepting new patients · Excellent wait time ·
Read bio
Dr. Gale Lawrence completed her medical training at Long Beach Memorial Medical Center and has been practicing full service primary care, dermatology, and aesthetic medicine in the local community for over 30 years. A pioneer of modern aesthetic medicine, Dr. Lawrence prides herself on individualize...Click to read more
Next available: tomorrow
Physician Assistant (Gastroenterology)
5.00
·30 reviews
11.5 mi · 4772 Katella Ave, #200, Los Alamitos, CA 90720
Accepts Aetna, BlueCross BlueShield, Cigna + 7 more
Accepting new patients · Highly recommended ·
Read bio
**ALL EXISTING PATIENTS MUST CALL THE OFFICE TO BOOK THEIR FOLLOW-UP APPOINTMENTS** Terri Rembuskos is a graduate of the University of California, Irvine. She completed her Bachelor of Science in Biology and a Bachelor of Arts in Political Science in 1998. She went on to graduate from the Universit...Click to read more
Next available: Wed, Jul 15
Family Physician
4.65
·107 reviews
Quick and direct, super informative and helpful. Highly recommend. - Jun 24, 2025 by Aleisa L.Click to read more
14.5 mi · 1600 Pacific Coast Hwy, Seal Beach, CA 90740
Accepts Aetna, Cigna, Medicare + 4 more
Also offers video visits · Accepting new patients ·
Read bio
Dr. James Pearson completed his medical residency training at the University of Southern California's CVVP Health system and completed a subsequent fellowship at the University of California Irvine. He has continued his professional training at the American Board of Aesthetic Medicine and practices...Click to read more
Next available: Thu, Jun 25
Internist
4.58
·90 reviews
Dr. Ortiz was great! She was very attentive and addressed all my concerns. - Sep 9, 2024 by Anthony A.Click to read more
15.5 mi · 12052 Imperial Hwy, Ste 102, Norwalk, CA 90650
Accepts Aetna, BlueCross BlueShield, Cigna + 10 more
Accepting new patients · Excellent wait time ·
Read bio
PLEASE CONFIRM YOUR APPOINTMENT WITHIN 24 HOURS OF YOUR BOOKING VIA TEXT OR CALL. (Your appointment might be canceled if not confirmed 24 hours before your appointment time) Please confirm your appointment within 24 hours via text or call. I earned my Doctor of Medicine from Ross University School ...Click to read more
Next available: tomorrow
Gastroenterologist
22 mi · 250 W Bonita Ave, Ste 250, Pomona, CA 91767
Accepts Aetna, BlueCross BlueShield, Cigna + 5 more
Accepting new patients ·
Read bio
Dr. Dam is a gastroenterologist from Los Angeles, California, who completed his medical education at Touro University California. He went on to serve as Chief Resident during his Internal Medicine residency and completed his Gastroenterology fellowship at Larkin Community Hospital in Miami. Dr. Dam...Click to read more
Next available: Mon, Jun 29
Bariatric Physician
4.72
·83 reviews
Dr. Sadia is knowledgeable, compassionate, and she took the time to listen. I highly recommend her by DPClick to read more
15.5 mi · 12052 Imperial Hwy, Ste 102, Norwalk, CA 90650
Accepts Aetna, BlueCross BlueShield, Cigna + 8 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
PLEASE CONFIRM YOUR APPOINTMENT WITHIN 24 HOURS OF YOUR BOOKING VIA TEXT OR CALL. (Your appointment might be canceled if not confirmed 24 hours before your appointment time) Dr. Sadia Moinuddin, MD, FACP, DABOM, is a board-certified internal medicine physician who takes a compassionate, patient-cen...Click to read more
Next available: Wed, Jul 8
Gastroenterologist
5.00
·11 reviews
Dr. Lo is an excellent doctor. He listened to my problems carefully and attentively. The, he gave me suggestions ad invaluable advice regarding my problems. Dr. Lo certainly is the best doctor who extremly cares about patient's health. by KWClick to read more
26 mi · 612 W Duarte Rd, Ste 601, Arcadia, CA 91007
Accepts Aetna, BlueCross BlueShield, Cigna + 5 more
Accepting new patients · Highly recommended ·
Read bio
Dr. Sunny Lo is board-certified and fellowship-trained in gastroenterology and hepatology. He is a member of the American College of Gastroenterology and has trained extensively in endoscopy, colonoscopy, and endoscopic retrograde cholangiopancreatography (ERCP) procedures. His medical interests ran...Click to read more
Next available: tomorrow
Gastroenterologist
22.5 mi · 4244 Rvwk Pkwy, Ste 290, Riverside, CA 92505
Accepts Aetna, BlueCross BlueShield, Cigna + 6 more
Accepting new patients ·
Read bio
Dr. Adnan Ameer is an experienced gastroenterologist providing in-person services at United Medical Doctors. He sees patients in Riverside and Moreno Valley, CA. As part of his formal education and training, Dr. Ameer completed a medical degree at the Ross University School of Medicine in Dominica,...Click to read more
Next available: Thu, Jul 9
Gastroenterologist
26.5 mi · 9481 Pittsburgh Ave, Ste 200, Rancho Cucamonga, CA 91730
Accepts Aetna, BlueCross BlueShield, Cigna + 7 more
Accepting new patients ·
Read bio
Hussein Abidali, DO, is a board-certified gastroenterologist at Platinum Digestive Health in Rancho Cucamonga, California. With a wealth of credentials and extensive training, Dr. Abidali is dedicated to providing comprehensive and advanced care in gastroenterology. Dr. Abidali holds certifications...Click to read more
Next available: today
Nurse Practitioner (Gastroenterology)
22 mi · 250 W Bonita Ave, Ste 250, Pomona, CA 91767
Accepts Aetna, BlueCross BlueShield, Cigna + 5 more
Accepting new patients ·
Read bio
Jalpa Chaudhari, NP, has over 15 years of experience as a Registered Nurse and has spent the last 5 years as a Gastroenterology Nurse Practitioner. With her extensive clinical background, she brings a wealth of knowledge and expertise to her practice, specializing in the care and management of gastr...Click to read more
Next available: today
Physician Assistant (Gastroenterology)
26.5 mi · 9481 Pittsburgh Ave, Ste 200, Rancho Cucamonga, CA 91730
Accepts Aetna, BlueCross BlueShield, Cigna + 5 more
Accepting new patients ·
Read bio
Received Master of Science degree in Phyician Assistant Studies in 2021 from the Nova Southeaster University in Florida. Rika graduated from UCSD with Bachelor of Science in Public Health in 2018. She has practiced as Physician Assistant with Gastroenterology group in Orlando, Florida before joinin...Click to read more
Next available: today
Family Physician
4.97
·34 reviews
Solid! Great doc - Aug 21, 2025 by Sonny S.Click to read more
27 mi · 395 W Avenida Vista Hermosa, Unit K, San Clemente, CA 92672
Accepts Aetna, BlueCross BlueShield, Cigna + 6 more
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Oscar Gantes is a family physician at Mission Heritage - Internal Medicine in San Clemente, CA. He accepts patients of all ages and genders with common illnesses, chronic diseases, minor injuries, and mental health issues. Dr. Gantes understands patients' conditions and prepares individualized ...Click to read more
Next available: Thu, Jul 2
Family Nurse Practitioner
4.21
·19 reviews
Provider listened and provided good feedback and information pertaining to my issues. A clear plan was communicated to address my health problems. Regina was caring and empathetic. - Mar 31, 2026 by Marcia S.Click to read more
30 mi · 4646 Brockton Ave, Ste 201, Riverside, CA 92506
Accepts Aetna, BlueCross BlueShield, Cigna + 11 more
Accepting new patients ·
Read bio
Regina Robertson, MSN, APRN, FNP-BC, is a compassionate and experienced Nurse Practitioner with more than 30 years in nursing and advanced clinical care. She is dedicated to providing thoughtful, patient-centered primary care that focuses on both physical and emotional well-being. Regina holds a Mas...Click to read more
Next available: tomorrow
Internist
4.16
·80 reviews
The office staff and Dr Muttalib were very professional. The wait time was 35 min before I was seen after being taken to the exam room.Click to read more
28.5 mi · 23639 Hawthorne Blvd, Ste 102, Torrance, CA 90505
Accepts Aetna, BlueCross BlueShield, Cigna + 15 more
Accepting new patients ·
Read bio
Dr. Azhar Muttalib is a licensed internist providing state-of-the-art treatment to Torrance-area patients. After earning his Bachelor of Medicine, Bachelor of Surgery from Kakatiya Medical College in India, he completed his internship at Detroit Memorial Hospital and his residency in internal medici...Click to read more
Next available: Thu, Jun 25
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Frequently asked questions

How can I make a same-day appointment with a Gastroenterologist in Orange County?

On average, patients who use Zocdoc can search for a Gastroenterologist in Orange County, book an appointment, and see the Gastroenterologist within 24 hours. Same-day appointments are often available, you can search for real-time availability of Gastroenterologists in Orange County who accept your insurance and make an appointment online.


How can I find an Orange County Gastroenterologist who takes my insurance?

Zocdoc lets you search specifically for an Orange County Gastroenterologist who takes your insurance. Just choose your carrier and plan from the drop-down menu at the top of the page. If you’re not sure which plan you have, you can use Zocdoc’s insurance checker to find out.


How can I book an appointment online with a Gastroenterologist in Orange County?

Zocdoc is a free online service that helps patients find Gastroenterologists in Orange County and book appointments instantly. You can search for Orange County Gastroenterologists by symptom or visit reason. Then, choose your insurance plan. Based on that information, you’ll see a list of providers who meet your search criteria, along with their available appointment slots.


How can I find a female Gastroenterologist in Orange County?

When you search for Orange County Gastroenterologists on Zocdoc, you can filter your results by gender, in addition to other criteria. That way, you’ll only see Gastroenterologists in Orange County who match your preferences.


How can I find an Orange County Gastroenterologist who sees patients after hours?

On Zocdoc, you can search specifically for Orange County Gastroenterologists with availability after 5 p.m.


How can I find a top-rated Gastroenterologist in Orange County?

You can use Zocdoc to find Gastroenterologists in Orange County who are highly rated by other patients. These ratings are based on verified reviews submitted by real patients. Every time a patient completes an appointment booked on Zocdoc, they’re invited to review their experience. Each review must comply with Zocdoc’s guidelines.


How can I find a video visit with a Gastroenterologist online in Orange County?

Gastroenterologists in Orange County on Zocdoc who see patients through online video visits will have a purple video icon on their profiles. You can also filter your search results to show only Gastroenterologists who offer video visits.


Are video visits with a Gastroenterologist online covered by my insurance?

Most insurers provide coverage for video visits at the same cost as in-person visits. You can search on Zocdoc specifically for Gastroenterologists in Orange County who accept your insurance for video visits by selecting your carrier and plan from the drop-down menu at the top of the page. We recommend you check with your insurance carrier directly to confirm your coverage and out of pocket costs for video visits.


How can I find a Gastroenterologist in Orange County who sees patients in the morning or evening?

Zocdoc lets you search specifically for a Gastroenterologist who has appointments available before 10:00 am, or after 5:00 pm. Just choose the special hours filter at the top of our search page.


How can I find a Gastroenterologist in Orange County who sees patients during the weekend?

Zocdoc let's you see real-time availability for Gastroenterologists in Orange County. Many Gastroenterologists offer appointments on Saturdays and Sundays.


Who is a gastroenterologist? 

The medical study of the digestive tract, gallbladder, bile ducts, pancreas, and liver forms part of gastroenterology. Doctors specializing in treating the gastrointestinal (GI) tract and liver disorders are called gastroenterologists. GI specialists can perform routine procedures such as colonoscopies. 


Education and training of a gastroenterologist

Medical students aspiring to specialize in gastroenterology must complete three years of internal medicine residency after completing mandatory medical school education. They then proceed to a two or three-year fellowship in gastrointestinal diseases. 


The fellowship intends to provide in-depth exposure to GI problems and remedial measures. Nationally recognized gastroenterology experts train doctors and give them a holistic understanding of gastrointestinal diseases. Besides mastering the required technical expertise, doctors are also trained to care for patients during pre-hospitalization. 


Formal training imparts detailed theoretical and practical knowledge in endoscopy (upper, sigmoidoscopy, and colonoscopy), EMR (endoscopic muscular resection), EUS (endoscopic ultrasound), and endoscopic biliary examination. Students also gain expertise in other endoscopic procedures, such as intestinal dilation, hemostasis, and polypectomy. 


The American College of Gastroenterology, the American Board of Internal Medicine, the American Gastroenterological Association, and the American Society for Gastrointestinal Endoscopy are bodies that monitor doctors during their fellowship. Following their successful completion of the fellowship, they must clear the board examination to be called board-certified gastroenterologists.


Medical disorders that gastroenterologists treat

Gastroenterologists are trained medical professionals with extensive knowledge of the regular functioning of the digestive system. They understand how food moves through the stomach and intestine, how nutrients are absorbed, how waste is removed, and the role of the liver in the digestive process. Such expertise allows them to diagnose & treat such problems as


  • Colon polyps - Colorectal polyps are mucosal growths on the colon's inner lining. Polyps are usually benign, but if you frequently experience blood in your stools or rectal pain, persistent diarrhea, etc., it's better to consult a specialist at the earliest. 
  • Gastroesophageal reflux disease (GERD) - This condition is triggered by the backward flow of gastric content and acid through the esophagus, causing chest pain and burns. This common GI disorder is also known as acid regurgitation.
  • Hepatitis - Hepatitis is a common gastrointestinal malfunction that happens due to inflammation of the liver. Alcohol abuse, viral infection, and autoimmune disorders can lead to hepatitis.
  • Peptic ulcers - The bacteria H. Pyroli, or erosion of the stomach mucosa due to increased acid production, can create sores known as peptic ulcers in the stomach (gastric ulcer), small intestine (duodenal ulcers) and lower esophagus (esophageal ulcer). 
  • Colitis - Colitis is caused by large intestine or colon inflammation. It can cause mild or extreme pain in the abdominal area.
  • Gallbladder and biliary tract diseases - Cholestasis or biliary obstruction can be caused by stones in the bile duct. The condition requires immediate medical treatment that may require surgical intervention.
  • Irritable bowel syndrome (IBS) - People suffering from IBS experience abnormal bowel movements in frequency and consistency. They also experience lower abdominal pain.
  • Pancreatitis - Inflammation of the pancreas is commonly referred to as pancreatitis. This condition can be acute, i.e., come and go intermittently, or chronic, requiring different remedial measures. 
  • Celiac disease - An autoimmune disorder leading to inflammation in the small intestinal mucosa. People suffering from this disorder are usually allergic to gluten. 


When should you consult a gastroenterologist near you?

Your family physician is likely to refer you to a gastroenterologist if you are experiencing any of the following symptoms:


  • Blood in stools - Blood in your stool might go unnoticed initially but can lead to iron deficiency and anemia over time. Hemorrhoids are a common cause, but if over-the-counter treatments do not help, it’s wise to consult a gastroenterologist to rule out other causes of bleeding.
  • Difficulty swallowing - Painful or difficult swallowing should be evaluated by a specialist, who may perform an upper endoscopy to identify the cause of your issue and recommend appropriate treatment.
  • Recurring or persistent abdominal pain
  • Chronic persistent diarrhea or constipation - While diarrhea often resolves within 24 to 48 hours, chronic or severe cases may indicate a more serious issue, like irritable bowel syndrome, Crohn’s disease, or even colon cancer. Seek medical attention if diarrhea is prolonged or accompanied by a fever over 102°F.
  • Acid reflux or heartburn - If you have frequent heartburn more than twice a week, it may signal acid reflux or gastroesophageal reflux disease (GERD). Regular heartburn should be evaluated by a gastroenterologist to prevent potential complications.
  • Yellow discoloration of skin or jaundice
  • Unexplained weight loss - If you’re losing weight unintentionally without any changes in diet or activity, this could signal a gastrointestinal condition. Issues like celiac disease or even certain cancers can also cause sudden, unexplained weight loss.
  • Constant bloating - While occasional bloating is normal, chronic bloating can indicate issues like small intestinal bacterial overgrowth (SIBO), irritable bowel syndrome (IBS), or lactose intolerance. A gastroenterologist can help pinpoint the cause and enhance your quality of life.


People above 50 with a positive family history of colon or rectal cancer must visit a gastroenterologist for preventive care, as they are at an increased risk of developing cancer. If you’re experiencing any of these symptoms, scheduling a gastroenterology appointment can help with early diagnosis, effective treatment, and improved well-being.


Benefits of seeing a gastroenterologist

Experiencing gastrointestinal disorder symptoms such as abdominal pain, constipation, or persistent diarrhea can make daily life activities and work difficult. While some nonprescription medications can help with these symptoms, they may provide only temporary relief. Some symptoms can be indicative of a serious underlying health condition. Therefore, it is advisable to visit a qualified gastroenterologist near you. 


Here's why seeing a gastrointestinal specialist can be beneficial

  • Comprehensive evaluations - Diagnosing specific issues within the gastrointestinal tract may be difficult, given that the symptoms can indicate various problems in the body. However, when you see a gastroenterologist, they will most likely recommend or perform multiple diagnostic and imaging tests to fully understand the root cause of your symptoms. Based on your test results, your gastroenterologist will be able to make an accurate and error-free diagnosis and give you clarity on your condition. 
  • Quick relief - Given their expertise and training in evaluating the GI tract, a gastroenterologist can quickly understand and point out the cause of your symptoms. Further, they can also recommend the appropriate prescription medication for specific problems to help provide quicker relief. They can also refer you to other specialists and offer better treatment options than over-the-counter medicines and home remedies. 
  • Preventive screenings and early diagnosis - Most gastrointestinal issues develop over time and are not life-threatening. However, some severe conditions may be concerning if left undetected and undiagnosed. Additionally, some of these conditions may have little to no symptoms. Therefore, you must see a gastroenterologist near you so that they can detect any severe conditions in their early stages and help you avoid painful symptoms. 


How do gastroenterologists diagnose GI problems? 

In addition to conducting a physical exam upon a visit, your gastroenterologist may also recommend standard tests or screenings once they have reviewed your recurring symptoms and family and medical history. 


Gastroenterologists may perform the following tests: 


  • Endoscopy

To perform an endoscopy, a gastroenterologist attaches a camera to a long, thin tube called an endoscope to examine the digestive tract. This device is passed through the mouth and down the throat and is used to view the esophagus, the upper part of the small intestine, and the stomach. The endoscope sends back images on the screen for the doctor to monitor and diagnose the condition.


A doctor will recommend endoscopy if the patient is experiencing stomach pain, ulcers, gastritis, difficulty swallowing, bleeding in the digestive tract, and changes in bowel habits. The doctor also checks for any growth or polyps in the colon. 


There are a few ways to prepare for the endoscopy:

  • Ensure to stop eating anything 6-8 hours before the endoscopy
  • A laxative is given to the patient to ensure that the colon is cleared of stool
  • Sedatives are given just before the procedure to relax the patient
  • Colonoscopy


A colonoscopy is performed mainly to monitor the colon. Like endoscopy, a tube is inserted, and the images are visible on the screen. The difference, however, is the tube, in this case, is inserted through the rectum rather than the mouth.


Individuals experiencing early symptoms of colon or rectum cancer, such as abdominal pain and rectal bleeding, may require a colonoscopy to identify the causes of bowel habit changes. The patient might feel cramps during the procedure, which usually disappears once done. If the doctor finds something abnormal, they can take small tissue samples for biopsy. Colonoscopies are accurate and successfully diagnose and treat the conditions without the patient undergoing any major operation.


It would help inform the doctor about any other condition you might suffer before the procedure. Apart from this, there might be some diet and fluid restrictions before having a colonoscopy, which the doctor will direct. The doctor can also administer Laxatives to ensure the colon is clear. 


After the medical procedure, the patient must remain in the recovery room for at least 30 minutes for observation. The patient may experience cramping or passing gas sensations, which will subside quickly. The patient can resume their normal diet after the procedure is finished. In case of severe complications, such as excessive rectal bleeding, severe abdominal pain, fever, or chills, the patient should immediately contact their doctor.


  • Polypectomy

A polypectomy is performed to remove polyps from the bowel. Polyps are non-cancerous growth on the linings of the colon. The two most common forms of polypectomies are uterine polypectomy and colon polypectomy.


Doctors diagnose the presence of polyps after the screening. However, polyps only require removal if they start causing pain and bleeding symptoms. 


Some of the risks associated with the procedure are:

  • Organ perforation - The colonoscope might end up puncturing the organ it operates on, which can cause fatal injury and is very rare.
  • Infection - The polypectomy causes a wound if the wound gets infected, mainly if the patient doesn't follow the doctor's restrictions.
  • Excessive bleeding - If the wound doesn't heal, it might cause bleeding.
  • Incomplete removal: Some tissues might be left while performing the procedure, requiring repeated removal.
  • A barium enema - The lower gastrointestinal series, also known as a barium enema, is a medical test that involves injecting barium sulfate into the rectum to obtain high-contrast X-ray images of the large intestine or colon. This test is recommended for people with chronic diarrhea or constipation, rectal bleeding, unexplained weight loss, abdominal pain, or changes in bowel habits.


How do you keep your gut healthy?

Our digestive tract is filled with microorganisms that are beneficial for our health. Maintaining gut health means maintaining a balance of those microorganisms, as any irregular change can

affect our mental and physical health. There are some research-backed ways to care for gut health and enhance our overall health. A few of those practices are listed below:


  • Taking probiotics and consuming fermented foods can help to boost the beneficial bacteria. A few such foods are fermented vegetables, kimchi, kombucha, etc.
  • Research suggests that prebiotics help probiotics become more tolerant to adverse conditions like pH and temperature changes. Foods rich in prebiotics are asparagus, bananas, garlic, whole grains, etc.
  • Restricting sugar and sweeteners, as too much sugar can affect the microbes and cause an imbalance. It can further increase the number of certain microbial strains linked to metabolic diseases such as diabetes and heart disease.
  • Reducing stress can help improve a person's overall health, including gut health. There can be several stressors like psychological and environmental stress, sleep deprivation, and disturbance of the circadian rhythm. Meditating, regularly exercising, maintaining a healthy diet, and sleeping well can help reduce stress.
  • Avoiding too many antibiotics apart from combating bacterial infections in the body can also kill the good bacteria in the gut. Along with it, overusing antibiotics can also lead to antibiotic resistance.
  • Avoiding smoking can help restore the imbalance in microbes caused by smoking. Smoking decreases the levels of beneficial bacteria in the intestine and increases the number of potentially harmful microorganisms.

Find the best gastroenterologist near you in Orange County, CA 

Gastrointestinal disorders may seem harmless in the beginning. Many conditions may subside with over-the-counter medications or changes in lifestyle and diet plans. However, you must consult an expert without delay if you have prolonged symptoms. 


On Zocdoc, you can find some of the best gastroenterologists in Orange County, CA. They specialize in a variety of gastrointestinal problems. Each registered doctor's individualized profile briefly overviews their education and specialties and comes with patient testimonials. The patient testimonials are regularly updated and verified.


Finding the profile that best suits your needs is made easier with the help of search filters. You can enter your preferred date, time, location, and the condition you're suffering from. Zocdoc also lets you find doctors who can cater to your insurance plans. These filters help you customize your search further. 


If your insurance plan isn’t listed on Zocdoc, you can upload a photo of your medical insurance card (this feature currently doesn’t support vision or dental cards). Zocdoc will scan the image to identify your likely plan. This process makes it easier to match you with providers who accept your insurance, ensuring a smoother experience as you book your appointment. If you run into any issues uploading the image, you can reach out to the Zocdoc service team for assistance. For further insurance-related queries, refer to Zocdoc's patient help center


Some of the best gastroenterologists near you can also provide video consultations. 

All bookings with Zocdoc are safe, secure, and free!


A statistical overview of gastrointestinal diseases

While some gastrointestinal diseases may have a familial history or be induced by autoimmune disorders, many conditions are triggered by lifestyle factors. According to UCI Health Community Health Needs Assessment 2019, around 33% of the adult population in Orange County is overweight, with over 28% of teens over the obesity threshold. 


As per the Centers for Disease Control and Prevention, colorectal cancer is the second most deadly cancer in the United States. Over 100,000 colon cancer cases were detected in 2020, with a nearly equal split between men and women affected by the disease. 


The study suggests that if adults above 50 undergo regular colon cancer screening, about 60% of cancer cases can be prevented. In Orange County, the screening figure stands above 70%. 

The estimated cases of gastroesophageal reflux disease in the US range from 18% to 27%. Cases of acute pancreatitis range from about 5 to 35 in every 100,000 people in the US. Around 3 million cases of IBD (either ulcerative colitis or Crohn's disease) were reported in the United States in 2015. 


Sources

WebMD[1]

News Medical Life Sciences

Healthline 

MedicineNet

NorthShore Gastroenterology & Endoscopy Centers

Verywell Health[1]

Verywell Health[2]

Mayo Clinic

WebMD[2]

Medical New Today

American College of Gastroenterology

Cleveland Clinic

Physicians Alliance of Connecticut

The content herein is provided for general informational purposes only and is not a substitute for professional medical advice, diagnosis or treatment. Medical information changes constantly, and therefore the content on this website should not be assumed to be current, complete or exhaustive. Always seek the advice of your doctor before starting or changing treatment. If you think you may have a medical emergency, please call your doctor or 9-1-1 immediately.

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