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315 verified Internists in Riverside, 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 04/22/2026
Availability last updated 04/22/2026
Nurse Practitioner
4.94
·83 reviews
I had a fantastic visit through and through. I felt safe, seen, and heard. I look forward to continuing to be her patient. - Jan 2, 2026 by Jessica O.Click to read more
1.5 mi · 4646 Brockton Ave, Ste 201, Riverside, CA 92506
Accepts Aetna, BlueCross BlueShield, Cigna + 10 more
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Brittany Camille brings over a decade of diverse nursing experience to Altais Medical Group Riverside. Her background in primary care and medical-surgical units has given her a comprehensive understanding of patient care needs. Brittany chose to become a Family Nurse Practitioner for the opportunity...Click to read more
Next available: today
Family Physician
4.85
·48 reviews
Very friendly and attentive staff. Doctor was very great and very professional. Would def recommend to everyone - Aug 21, 2025 by Justin V.Click to read more
1.5 mi · 4646 Brockton Ave, Ste 201, Riverside, CA 92506
Accepts Aetna, BlueCross BlueShield, Cigna + 24 more
Accepting new patients · 25+ years of experience · Highly recommended · Excellent wait time · Expertise in diabetic emergency + 2 more ·
Read bio
Believing that prevention is the best medicine, Dr. Villegas makes health education a top priority for his practice. A San Gabriel Valley native who maintains strong ties with his home area, Dr. Villegas received his medical degree from the University of California-Davis and completed his residency ...Click to read more
Next available: today
Family Nurse Practitioner
5.00
·5 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
1.5 mi · 4646 Brockton Ave, Ste 201, Riverside, CA 92506
Accepts Aetna, BlueCross BlueShield, Cigna + 15 more
Accepting new patients · Highly recommended · Excellent wait time ·
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
Family Physician
5.00
·2 reviews
Great experience with the doctor - Feb 17, 2026 by David W.Click to read more
2 mi · 4013 Brockton Ave, Riverside, CA 92501
Accepts Aetna, BlueCross BlueShield, Cigna + 25 more
Accepting new patients · Highly recommended · Excellent wait time · Expertise in chronic high blood pressure + 1 more ·
Read bio
Please review a few things when booking with me: Before booking, please make sure the location works for you. We have a number of locations in the Inland Empire. We collect deductibles, copays at the time of service. If you have any questions or concerns, please call your insurance before your visi...Click to read more
Next available: today
Gastroenterologist
0.5 mi · 6958 Brockton Ave, Ste 203, Riverside, CA 92506
Accepts Aetna, BlueCross BlueShield, Cigna + 9 more
Accepting new patients · Expertise in upper gi endoscopy + 4 more ·
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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, May 21
Urgent Care Clinic
4.84
·64 reviews
It was easy to make appointments, the wait time was minimal and the staff was very friendly and professional. - May 15, 2025 by Donald R.Click to read more
11.5 mi · 14117 Limonite Ave, Eastvale, CA 91752
Accepts Aetna, BlueCross BlueShield, Cigna + 16 more
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Carbon Health combines smart technology and modern design to help make high-quality, inclusive, and personal healthcare accessible to all. With our convenient urgent care locations, we treat a full spectrum of health needs including cold, COVID and flu symptoms, urinary tract infections, sinus infec...Click to read more
Next available: today
Urgent Care Clinic
4.84
·76 reviews
Short wait time, great bedside manner, friendly and knowledgeable staff, - Feb 6, 2026 by Jennifer F.Click to read more
11.5 mi · 3955 Bedford Canyon Rd, Ste 103, Corona, CA 92883
Accepts Aetna, BlueCross BlueShield, Cigna + 16 more
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Carbon Health combines smart technology and modern design to help make high-quality, inclusive, and personal healthcare accessible to all. With our convenient urgent care locations, we treat a full spectrum of health needs including cold, COVID and flu symptoms, urinary tract infections, sinus infec...Click to read more
Next available: today
Family Physician
9 mi · 24119 Hemlock Ave, Ste 104, Moreno Valley, CA 92557
Accepts Aetna, BlueCross BlueShield, Cigna + 20 more
Also offers video visits · Accepting new patients ·
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Dr. Matthew Im is a family physician at Rancho Family Medical Group’s Moreno Valley office. He grew up in Temecula and was inspired to pursue medicine by his father, Dr. Tae Im, who has long been part of Rancho Family. Early experiences on medical mission trips to Haiti and the Philippines further s...Click to read more
Next available: tomorrow
Urgent Care Clinic
4.79
·99 reviews
We were seen very quickly and everyone was very kind and helpful. - Jun 12, 2025 by Josh G.Click to read more
13.5 mi · 7831 Monticello Ave, Ste 1102, Rancho Cucamonga, CA 91739
Accepts Aetna, BlueCross BlueShield, Cigna + 16 more
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Carbon Health combines smart technology and modern design to help make high-quality, inclusive, and personal healthcare accessible to all. With our convenient urgent care locations, we treat a full spectrum of health needs including cold, COVID and flu symptoms, urinary tract infections, sinus infec...Click to read more
Next available: today
Family Nurse Practitioner
4.50
·2 reviews
NP was friendly and professionalClick to read more
11 mi · 11306 Mountain View Ave, Ste C, Loma Linda, CA 92354
Accepts Aetna, BlueCross BlueShield, Cigna + 25 more
Accepting new patients ·
Read bio
Hello! Please review a few things when booking with me: Before booking, please make sure the location works for you. We collect deductibles, copays at the time of service. If you have any questions, please call your insurance before your visit. In addition, please be accurate about the reason for yo...Click to read more
Next available: tomorrow
Family Nurse Practitioner
13.5 mi · 8231 Rochester Ave, Rancho Cucamonga, CA 91730
Accepts Aetna, BlueCross BlueShield, Cigna + 20 more
Also offers video visits · Accepting new patients ·
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Heidi Larson, FNP-C is a board-certified family nurse practitioner with over 25 years of experience in medicine. She has been caring for patients at Rancho Wellness in Rancho Cucamonga for the past ten years. Originally from Huntington Beach, Heidi completed her undergraduate studies at Westmont Col...Click to read more
Next available: Wed, Apr 29
Physician Assistant
13.5 mi · 8231 Rochester Ave, Rancho Cucamonga, CA 91730
Accepts Aetna, BlueCross BlueShield, Cigna + 20 more
Also offers video visits · Accepting new patients ·
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Barbara Santa Cruz is a dedicated physician assistant at Rancho Wellness in Rancho Cucamonga and Upland, with over 44 years of experience in healthcare. A Southern California native, Barbara began her career in nursing before becoming a PA when the profession was still in its early days. Her backgro...Click to read more
Next available: Thu, Apr 30
Internist
4.79
·135 reviews
First impression was very good. He took sufficient time and was attentive to my needs. Appeared very competent. - Dec 11, 2012Click to read more
20.5 mi · 255 E Bonita Ave, Pomona, CA 91767
Accepts Aetna, BlueCross BlueShield, Cigna + 40 more
Also offers video visits · Accepting new patients · 25+ years of experience · Highly recommended · Expertise in diabetic emergency + 9 more ·
Read bio
Serving members of the Pomona, Upland, and San Antonio communities, Dr. Azhar Majeed provides quality internal care with attention to detail, compassion, and a gifted support staff. He uses only the most up-to-date equipment to ensure accurate diagnoses and safe treatment plans. Dr. Majeed offers a...Click to read more
Next available: Thu, May 7
Nurse Practitioner (Virtual)
1.00
·1 review
Rancho Cucamonga, CA
Accepting new patients · Offers video visits ·
Read bio
Ms. Martena Israil is a skilled, friendly, and caring nurse practitioner. She currently offers her services at Rancho Weight Loss in Rancho Cucamonga, CA, and takes virtual appointments. As part of her formal education and training, Ms. Israil earned her master's degree in family health nursing fr...Click to read more
Next available: Fri, Apr 24
Primary Care Doctor
4.81
·320 reviews
Today's visit was really good! I need a new PCP so I am appreciative that he was accepting new patients. by JMClick to read more
18 mi · 99 N San Antonio Ave, Ste 210, Upland, CA 91786
Accepts Aetna, BlueCross BlueShield, Cigna + 12 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Hello! Please review a few things when booking with me: Before booking, please make sure the location works for you. We are based out of Upland, California. We collect deductibles and copays at the time of service. If you have any questions or concerns, please call your insurance before your visi...Click to read more
Next available: tomorrow
Physician Assistant
17 mi · 525 N 13th Ave, Ste A, Upland, CA 91786
Accepts Aetna, BlueCross BlueShield, Cigna + 20 more
Also offers video visits · Accepting new patients ·
Read bio
Hilda Mancilla, PA-C, is a dedicated physician assistant at Rancho Wellness in Rancho Cucamonga and Upland. A lifelong Inland Empire resident, she earned her undergraduate degree from Cal State San Bernardino and her medical training from Western University of Health Sciences in Pomona. With 24 year...Click to read more
Next available: Fri, May 1
Family Nurse Practitioner
4.90
·41 reviews
Receptionist Joyce was nice and polite. Appointment ran on time. Would recommend this office. by CGClick to read more
20.5 mi · 31571 Canyon Estates Dr, Ste 124, Lake Elsinore, CA 92532
Accepts Aetna, BlueCross BlueShield, Cigna + 25 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Hello! Please review a few things when booking with me: Before booking, please make sure the location works for you. We have a number of locations in the Inland Empire. We collect deductibles, copays at the time of service. If you have any questions or concerns, please call your insurance before y...Click to read more
Next available: tomorrow
Pediatrician
5.00
·1 review
17 mi · 15855 Pomona Rincon Rd, Chino Hills, CA 91709
Accepts Aetna, BlueCross BlueShield, Cigna + 9 more
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Alfonso is a board-certified pediatrician practicing for over 10 years in Orange and LA county. She received her medical degree at UC Davis School of Medicine and completed her residency training at CHOC Children’s hospital. Her favorite thing about being a pediatrician is, of course, the kids!...Click to read more
Next available: Wed, May 20
Internist
27.5 mi · 2501 E Chapman Ave, Orange, CA 92869
Accepts Aetna, BlueCross BlueShield, Cigna + 10 more
Accepting new patients ·
Read bio
Dr. Kate Monahan is an internist with St. Joseph Heritage Medical Group practicing in Orange, CAClick to read more
Next available: Fri, Apr 24
Internist
4.40
·5 reviews
Friendly professional - Sep 5, 2025 by Antonio N.Click to read more
27.5 mi · 13400 Jamboree Rd, Ste 200, Irvine, CA 92602
Accepts Aetna, BlueCross BlueShield, Cigna + 10 more
Accepting new patients · Excellent wait time ·
Read bio
Dr. Karoline Wang is a board-certified Internal Medicine doctor. She graduated from the Medical College of Wisconsin and completed her internship and residency training in internal Medicine at the California Pacific Medical Center in San Francisco. Dr. Wang also has a Masters in Public Health (MHSC)...Click to read more
Next available: Fri, Apr 24
Internist
5.00
·16 reviews
I had an excellent experience with Dr. Dong. From the very beginning, she was incredibly communicative and responsive, even before my appointment. During my visit, she took the time to listen carefully to all of my concerns and performed a very thorough physical and checkup. I never felt rushed or d...Click to read more
28 mi · 1190 Roosevelt #100, Irvine, CA 92620
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Portola Direct Primary Care is a membership-based concierge primary care practice in Irvine, which offers direct access to your PCP and longitudinal primary care. We do not accept or bill health insurances. You can find us online if this sounds new and you wish to learn more about how our practice s...Click to read more
Next available: tomorrow
Urgent Care Clinic
4.85
·71 reviews
I like to use Zocdoc for finding a doctor. It's convenient and save the time to make a appointment with the doctor. - Aug 6, 2025 by Lina W.Click to read more
26 mi · 858 N Rose Dr, Placentia, CA 92807
Accepts Aetna, BlueCross BlueShield, Cigna + 19 more
Accepting new patients · Excellent wait time ·
Read bio
Carbon Health combines smart technology and modern design to help make high-quality, inclusive, and personal healthcare accessible to all. With our convenient urgent care locations, we treat a full spectrum of health needs including cold, COVID and flu symptoms, urinary tract infections, sinus infec...Click to read more
Next available: today
Internist
4.80
·208 reviews
I loved how Dr. Fekri has great listening skills and a very good communicator - Oct 25, 2024 by John H.Click to read more
32 mi · 222 N Sunset Ave, Ste. F, West Covina, CA 91790
Accepts Aetna, BlueCross BlueShield, Cigna + 59 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Medical, STRAIGHT MEDICAL ONLY! NO HMO MEDICAL! No Caloptima No Alameda Alliance No Care First No LA Care Health Plan No Kaiser Permanente No Inland Empire Education and Training: Doctor of Medicine, Shiraz University of Medical Sciences School of Medicine Residency in Internal ...Click to read more
Next available: today
Internist
4.84
·107 reviews
Dr Ashfar was friendly professional and to the point, felt comfortable and heard. Thank you!Click to read more
29.5 mi · 24321 Avenida De La Carlota, Laguna Hills, CA 92653
Accepts Aetna, BlueCross BlueShield, Cigna + 9 more
Accepting new patients · Highly recommended · Excellent wait time · Expertise in chronic high blood pressure ·
Read bio
Dr. Yama Afshar is an internal medicine physician with a background in public health. He completed medical school at Midwestern University Arizona College of Osteopathic Medicine in Glendale, AZ and residency in internal medicine at UCSF Fresno in Fresno, CA. Dr. Afshar provides primary care for adu...Click to read more
Next available: Fri, Apr 24
Internist
5.00
·1 review
27.5 mi · 13400 Jamboree Rd, Ste 200, Irvine, CA 92602
Accepts Aetna, BlueCross BlueShield, Cigna + 10 more
Also offers video visits · Accepting new patients · Highly recommended ·
Read bio
Dr. Billy Zhang is a board-certified Internist with an eclectic background, having trained in Philadelphia, Pennsylvania and working as a primary care provider in Brooklyn, New York. Dr. Zhang's area of interest is providing patient centered care, understanding the best way to team up and address bo...Click to read more
Next available: Tue, May 12
Internist
5.00
·1 review
It was quick, simple, and helpful. Got everything I needed in matter of minutes. They understood my specific request and adapted quickly. - Nov 13, 2025 by Simon B.Click to read more
31 mi · 2141 N Harbor Blvd, Fullerton, CA 92835
Accepts Aetna, BlueCross BlueShield, Cigna + 10 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time · Expertise in upper respiratory infection (uri) + 2 more ·
Read bio
Dr. Johnny Wu is a board-certified Internal Medicine physician with St. Jude Heritage Medical Group. He received his medical degree from Saint Louis University in 2019 and finished Internal Medicine residency at the University of Illinois, Chicago in 2022. Dr. Wu's clinical interests include preven...Click to read more
Next available: Fri, Apr 24
Family Physician
4.82
·246 reviews
Dr appt was short but she was able to provide me with what I asked her to do. She was great. - Aug 30, 2022 by Malinda B.Click to read more
22.5 mi · 250 W Bonita Ave, #150, Pomona, CA 91767
Accepts Aetna, BlueCross BlueShield, Cigna + 13 more
Also offers video visits · Accepting new patients · 25 years of experience · Highly recommended · Excellent wait time ·
Read bio
NOW OFFERING LASER AESTHETIC TREATMENTS INCLUDING SKIN TAG REMOVAL, LASER HAIR REMOVAL, FACELIFT, SMOOTHEYE, LIPLASE. Dr. Lubna Isho is a board certified highly experienced Family Practice Physician. Through Compassion, meticulous attention to detail, and an atmosphere where patients can speak free...Click to read more
Next available: Tue, May 19
Internist
4.84
·110 reviews
Dr Roya is wonderful!! She was so respectful and helpful. I look forward to my next visit. by NMClick to read more
30.5 mi · 62 Corporate Park, Ste 130, Irvine, CA 92606
Accepts Aetna, BlueCross BlueShield, Cigna + 7 more
Also offers video visits · Accepting new patients · 25+ years of experience · Highly recommended · Excellent wait time ·
Read bio
Welcome, and thank you for considering my practice. I’m a board-certified internal medicine physician, trained at the University of Southern California (USC), with over 20 years of experience in patient care, proudly serving the Irvine community. As a primary care physician, I specialize in weight ...Click to read more
Next available: Mon, May 4
Urgent Care Clinic
4.90
·67 reviews
Booked an appointment the night before and they were on top of it upon my arrival for such a last minute appointment. - Aug 28, 2024 by Lila V.Click to read more
30 mi · 40461 Murrieta Hot Springs Rd, Ste J1, Murrieta, CA 92563
Accepts Aetna, BlueCross BlueShield, Cigna + 19 more
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Carbon Health combines smart technology and modern design to make high-quality, inclusive, and personal healthcare accessible to all. Our convenient urgent care locations treat a full spectrum of health needs, including cold, COVID and flu symptoms, urinary tract infections, sinus infections, abdomi...Click to read more
Next available: today
Pediatrician
5.00
·31 reviews
- Nov 8, 2025 by Aries A.Click to read more
26 mi · 4300 Rose Dr, Ste E, Yorba Linda, CA 92886
Accepts Aetna, BlueCross BlueShield, Cigna + 9 more
Also offers video visits · Accepting new patients · 25+ years of experience · Highly recommended · Excellent wait time ·
Read bio
Please note that this provider only sees children and adolescents under the age of 18. I love being able to help families through the joys and challenges of raising happy, healthy children. It's a remarkable thing to sign a teenager's health form for college and remember the first time you saw that...Click to read more
Next available: Fri, Apr 24
Family Physician
24 mi · 253 S. Diamond Bar Blvd, Diamond Bar, CA 91765
Accepts Aetna, BlueCross BlueShield, Cigna + 10 more
Accepting new patients · Expertise in chronic high blood pressure + 6 more ·
Read bio
Dr. Kim Tran is a board-certified Family Medicine physician. After graduating from University of California, Irvine in 2011, she went on to complete medical school at Lake Erie College of Osteopathic Medicine in Erie, PA and residency training at Sisters of Charity Hospital in Buffalo, NY, where she...Click to read more
Next available: Tue, May 5
Family Physician
4.94
·52 reviews
Dr. Lin not only listened but had my chart available and it seems like to was better versed in my medical history than I was. Which made me feel confident in his recommendations. He was super nice and made virtual visits feel comfortable! - Oct 10, 2022 by Sarilyn Y.Click to read more
24 mi · 253 S. Diamond Bar Blvd, Diamond Bar, CA 91765
Accepts Aetna, BlueCross BlueShield, Cigna + 9 more
Accepting new patients · Highly recommended · Excellent wait time · Expertise in lower back pain + 5 more ·
Read bio
I am committed to providing comprehensive health care for you and your family, working to achieve optimal health through a healthy lifestyle and disease prevention. I believe in caring for you when you are both sick and well. I earned my Doctor of Osteopathic Medicine degree from Rowan University an...Click to read more
Next available: Tue, May 12
Family Physician
4.91
·76 reviews
staff was nice, welcoming. Dr was thorough and made sure I understood everything. - Jul 27, 2022 by Ian R.Click to read more
24 mi · 253 S. Diamond Bar Blvd, Diamond Bar, CA 91765
Accepts Aetna, BlueCross BlueShield, Cigna + 9 more
Accepting new patients · Highly recommended · Excellent wait time · Expertise in chronic diabetes + 3 more ·
Read bio
Dr. Eric Lee is a family physician and primary care doctor. He is a part of St. Jude - Family Medicine in Diamond Bar, CA. He treats a range of common illnesses and also offers consultations and check-ups as part of his services. Dr. Lee earned his medical degree from A. T. Still University. He co...Click to read more
Next available: Fri, May 15
Pediatrician
5.00
·30 reviews
26 mi · 4300 Rose Dr, Ste B, Yorba Linda, CA 92886
Accepts Aetna, BlueCross BlueShield, Cigna + 9 more
Also offers video visits · Accepting new patients · Highly recommended ·
Read bio
Please note that this provider only sees children and adolescents under the age of 18. As a father of two adventurous and energetic boys, I understand the journey of parenthood, which often feels like a roller-coaster ride. When children are doing well and healthy, there is no greater joy and rew...Click to read more
Next available: Wed, Apr 29
Family Physician
4.88
·1265 reviews
What a breath of fresh air. A doctor who seemed happy to be there with you ! - Aug 6, 2023 by Kathy F.Click to read more
29 mi · 2000 E Chapman Ave, Ste 100, Fullerton, CA 92831
Accepts Aetna, BlueCross BlueShield, Cigna + 11 more
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
DISCLAIMER: Pyo Clinic is a learning facility but patient permission is ALWAYS sought before we include residents/students in their care. If patient prefers to see only Dr. Pyo, we fully respect their choice and will not include residents or students in their care. All of our patients are GUARANTEED...Click to read more
Next available: tomorrow
Pediatrician
4.31
·16 reviews
26 mi · 4300 Rose Dr, Yorba Linda, CA 92886
Accepts Aetna, BlueCross BlueShield, Cigna + 19 more
Also offers video visits · Accepting new patients ·
Read bio
Dr. Christine Wilson is a general pediatrician in Yorba Linda, CA. She completed her undergraduate studies at Baylor University in Texas, and attended medical school at Texas A&M College of Medicine. She moved back to southern California to the area where she grew up to complete her internship and r...Click to read more
Next available: Mon, May 4
Pediatrician
4.97
·32 reviews
26 mi · 4300 Rose Dr, Ste E, Yorba Linda, CA 92886
Accepts Aetna, BlueCross BlueShield, Cigna + 9 more
Also offers video visits · Accepting new patients · 25 years of experience · Highly recommended · Excellent wait time ·
Read bio
Please note that this provider only sees children and adolescents under the age of 18. There is nothing more important to me than the health and safety of your children. As a strong advocate of vaccinations, I believe that ensuring the children who visit our office are fully vaccinated is the singl...Click to read more
Next available: Tue, May 5
Family Physician
5.00
·2 reviews
29 mi · 801 Spectrum Ctr Dr, Irvine, CA 92618
Accepts Aetna, BlueCross BlueShield, Cigna + 7 more
Accepting new patients · Highly recommended ·
Read bio
My training as an osteopathic physician is grounded in treating the mind, body and spirit which is reflected in my approach to patient care. I find fulfillment in connecting with patients and building strong relationships. I believe this to be fundamental in creating a path forward to better health....Click to read more
Next available: tomorrow
Family Physician
5.00
·33 reviews
- Dec 9, 2024 by Setareh A.Click to read more
26 mi · 4300 Rose Dr, Ste Q, Yorba Linda, CA 92886
Accepts Aetna, BlueCross BlueShield, Cigna + 9 more
Accepting new patients · 25+ years of experience · Highly recommended · Excellent wait time · Expertise in atrial fibrillation and atrial flutter + 9 more ·
Read bio
There is nothing more important to me than the health and safety of your children. As a strong advocate of vaccinations, I believe that ensuring the children who visit our office are fully vaccinated is the single most important thing I can do to keep your children and your community safe. I earned ...Click to read more
Next available: Thu, May 7
Family Physician
5.00
·3 reviews
- Dec 18, 2025 by Yangxi L.Click to read more
26 mi · 4300 Rose Dr, 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. Brian Lai is a board-certified Family Medicine physician who is born and raised in Southern California. He completed medical school at Western University of Health Sciences, College of Osteopathic Medicine of the Pacific in Pomona. After medical school, he completed his Family Medicine residency...Click to read more
Next available: Thu, May 7
Calendar Check
1-3 days

Average time it takes to be seen by a provider

Doctor
100k

Verified providers with a 4.8 average rating

Primary Care Physician
15+ years

In the business of finding quality care for patients

Patients trust Zocdoc
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Frequently asked questions

How can I make a same-day appointment with an Internist in Riverside?

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


How can I find a Riverside Internist who takes my insurance?

Zocdoc lets you search specifically for a Riverside Internist 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 an Internist in Riverside?

Zocdoc is a free online service that helps patients find Internists in Riverside and book appointments instantly. You can search for Riverside Internists 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 Internist in Riverside?

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


How can I find a Riverside Internist who sees patients after hours?

On Zocdoc, you can search specifically for Riverside Internists with availability after 5 p.m.


How can I find a top-rated Internist in Riverside?

You can use Zocdoc to find Internists in Riverside 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 an Internist online in Riverside?

Internists in Riverside 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 Internists who offer video visits.


Are video visits with an Internist 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 Internists in Riverside 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 an Internist in Riverside who sees patients in the morning or evening?

Zocdoc lets you search specifically for an Internist 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 an Internist in Riverside who sees patients during the weekend?

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


What are internists?


Internists are certified doctors who only treat adults and not children or adolescents. They are internal medicine practitioners, i.e., their care focuses on conditions that affect the body's internal organs. Internists can treat a variety of conditions. Some, however, choose to become specialists in cardiology, endocrinology, hematology, immunology, infectious disease, etc.


An internist focuses on the scientific or laboratory approach to medicine and examines how bodily symptoms interact, affect, and work together. In the body, all systems are interconnected. For example, high blood pressure can result in heart disease, or having diabetes can increase the risk of multiple health conditions. Thus, internists are experts at managing one or more chronic diseases affecting a patient.


Typically, internists also conduct regular wellness exams and health screenings for both men and women and help patients lead the healthiest life possible. An internist can treat chronic allergies, high blood pressure, diabetes, sinus infections, high cholesterol, etc.


At the outset, an internist's practice seems similar to a general practitioner's. They are also both primary care doctors. However, differences exist. Internists treat only adults, while a general practitioner attends to people of all ages. Additionally, an internist's education is focused on internal medicine, while a general practitioner, in addition to internal medicine, also trains in other types of treatment, such as pediatrics.


Educational qualifications of an internist


Internists follow a training route akin to any other doctor of medicine. Their training begins in medical school. Before starting medical school, they must hold an undergraduate degree or complete three years of college, where one studies biology, chemistry, or other fields relevant to medicine.


Subsequently, they must clear a Medical College Admission Test, upon which they begin studying at a medical school. They spend four years acquiring medical training and education while also undergoing rotations in medical practices and hospitals. After getting their medical degree, internists must join a residency program to receive hands-on training to prepare for their lives as doctors.


The residency lasts at least three years, or maybe even longer, if they choose to specialize in surgery. All doctors must pass a licensing examination in their first year of residency. If they wish to specialize further, internists can opt for a fellowship lasting up to three years.


What are the internal medicine subspecialties that aspiring physicians can pursue?


Internal medicine offers 23 subspecialties, each focusing on specific diseases, organ systems, or patient populations. Subspecialists undergo fellowship training and must pass certification exams from boards like the American Board of Internal Medicine (ABIM).

  1. Adolescent medicine: Treats patients aged 10–21, focusing on primary care, reproductive health, eating disorders, and substance misuse.
  2. Adult congenital heart disease: Manages heart defects in adults, often coordinating with multidisciplinary teams.
  3. Advanced heart failure and transplant cardiology: Treats complex heart failure and transplant patients.
  4. Allergy and immunology: Diagnoses and manages allergies, asthma, and immune disorders for all ages.
  5. Cardiovascular disease: Treats heart and blood vessel diseases, focusing on prevention and management.
  6. Clinical cardiac electrophysiology: Specializes in heart rhythm disorders using pacemakers and other devices.
  7. Critical care medicine: Cares for critically ill patients, often in ICUs.
  8. Endocrinology, diabetes, and metabolism: Manages hormonal and metabolic disorders.
  9. Gastroenterology: Treats digestive system diseases and performs procedures.
  10. Geriatric medicine: Focuses on elderly patients and age-related conditions.
  11. Hematology: Diagnoses and treats blood disorders.
  12. Hospice and palliative medicine: Provides end-of-life care and symptom management.
  13. Hospital medicine: Specializes in inpatient care.
  14. Infectious disease: Manages infections and epidemics.
  15. Interventional cardiology: Treats heart diseases using catheter-based techniques.
  16. Medical oncology: Focuses on cancer treatment and care.
  17. Nephrology: Manages kidney disorders and dialysis.
  18. Neurocritical care: Treats life-threatening neurological conditions.
  19. Pulmonary disease: Manages respiratory disorders like asthma.
  20. Rheumatology: Treats joint, muscle, and connective tissue diseases.
  21. Sleep medicine: Diagnoses and treats sleep disorders.
  22. Sports medicine: Manages sports-related injuries without surgery.
  23. Transplant hepatology: Focuses on liver and digestive organ transplants.


Each subspecialty requires additional fellowship training and existing ABIM certification in internal medicine or a related field.


What conditions do internists treat?


Some of the most common conditions treated by an internist may include the following:

  • Diabetes management: When the body fails to produce adequate insulin, it results in high sugar levels in the blood, causing diabetes. Depending on the type and severity of diabetes, internists may recommend daily insulin injections to meet the body's insulin requirement. They may also recommend medicines to improve insulin effectiveness, increase insulin production, or slow down glucose absorption from the gut. Internists may also suggest diet changes, exercise, and weight loss solutions to manage diabetes effectively. 
  • Respiratory diseases: Internists help prevent, diagnose, and treat various respiratory conditions, including chronic obstructive lung disease, asthma, lung cancer, emphysema, cystic fibrosis, pulmonary hypertension, and complex lung infections. They work to manage the severe symptoms and help the patient lead a good quality of life. 
  • Chronic venous disease management: Healthy veins supply blood from different body parts to the heart. They do it with the help of tiny valves that open and close accordingly to pump the blood toward the heart. If the valves become weak or damaged and stop working, they fail to pump blood toward the heart. As a result, the blood flows backward and pools near the valves inside the veins. It commonly occurs in the leg veins. The condition is called chronic venous disease. Internists can identify the affected veins and provide proper treatment to strengthen the valves and improve blood flow. 
  • Hypertension: Chronic hypertension (also called high blood pressure) can significantly affect your arteries and lead to various cardiovascular diseases. Internists can help manage and treat high blood pressure with proper medications, lifestyle changes, and maintaining a healthy body.
  • Wound care management: Internists can treat wounds that don't heal even after two weeks and injuries that have not healed entirely after six weeks. They customize their care per the patient's needs and ensure thorough healing.
  • Heart disease: Internists can identify, manage, and treat various conditions affecting the blood vessels and the heart, including abnormal heart rhythms and heart attacks. Depending on the severity of the disease, internists may recommend medical procedures or medications and suggest necessary lifestyle changes to keep the heart healthy.
  • Critical care medicine: Internists are trained in critical care medicine and care for severely ill patients in hospital intensive care units. They work to stabilize a critically ill patient, make a thorough diagnosis, and provide comprehensive treatment to cure the illness holistically.


How do we sustain internal health?


Keeping your internal organs healthy prevents diseases and promotes overall well-being. Here are some general tips to help maintain the health of your internal organs:

  • Eat a balanced diet: Consume various fruits, vegetables, whole grains, proteins, and healthy fats. Limit processed foods, sugary drinks, excessive saturated fats, and refined carbohydrates (white bread, pasta, and white rice). Also, try to reduce excessive salt intake as it leads to elevated blood pressure, posing a risk for heart and kidney complications.
  • Stay hydrated: Ample hydration is essential for supporting kidney function, as water removes waste from the blood. Meanwhile, dehydration can impede this process, allowing toxins to accumulate and potentially harm your kidneys and liver. Hence, drink at least four to six glasses of water daily.
  • Exercise regularly: Regular physical activity benefits all your internal organs. It helps decrease blood pressure and cholesterol levels, strengthen your heart, increase muscle strength, improve sleep, and maintain a healthy weight. You need not adhere to a rigorous exercise regimen; 30-minute moderate-intensity exercises like gardening or walking also do the job.
  • Avoid smoking and limit alcohol: Smoking raises the chance of various health problems, including lung disease, kidney, and heart disease. So, avoiding it is your best bet. Additionally, minimizing alcohol consumption can reduce liver damage.
  • Be cautious with medications: Mixing medications and supplements or exceeding recommended doses can harm your liver, as it is primarily responsible for metabolizing drugs. Also, excessive intake of herbal or vitamin supplements can affect your kidneys, leading to organ damage or interference with prescribed medications. Thus, it is better to seek medical advice if you are unsure of your current medication regimen.
  • Get regular check-ups: Schedule routine check-ups with your healthcare provider for screenings and preventive care. Early detection of health concerns can help prevent complications and improve outcomes.


Reasons to visit an internist


Internal medicine is a kind of primary care. One of the most common reasons to visit an internist near you could be if you are seeking a primary care physician. An internist can manage most, if not all, of your medical conditions. Following are some reasons why you must visit an internist:


  • An internist can ensure you get continued care: Patients can seek guidance from their internists throughout the healthcare process. Internists provide their patients with handhold support through every treatment step, such as diagnosis, testing, follow-ups, and establishing a care plan. For example, a routine annual exam may indicate high blood sugar, leading to diabetes. The internist can then pivot the course of your treatment accordingly.
  • Internists can cater to your medical needs in a timely and efficient way: Because they know your medical history and your overall health conditions, internists can help patients deal with any issues and devise timely solutions, even between check-ups. 
  • Internists can account for many facets of preventative medicine: Once people turn adults, they visit an internist. More often than not, this relationship continues for years, and internists become the first point of contact for any medical issue. They typically act as primary care physicians and are often frequented by all adult members of families. This relationship allows internists to create comprehensive treatment plans that ensure health maintenance.


Find a top-rated internist near you in Riverside, CA


Patients generally stay in the care of an internist for years on end, seeking treatment for medical issues up until their old age. Thus, building a rapport and a comfortable patient-doctor relationship is paramount. To ensure this, you must find a practitioner that fulfills your requirements. Worry not; Zocdoc can help you simplify your tiring and extensive search.


You have to enter the type of specialization you seek, the location, date, and kind of insurance plan into the search bar of the Zocdoc homepage. Additionally, to streamline your search, you can add information about the symptoms you are facing. After entering the details, a list of doctors' profiles matching your choices will appear. After streamlining your search, you can check out their profiles and narrow your options.


You can learn about a practitioner's educational qualifications, areas of expertise, awards, accreditations, and experience through their profiles. You can also view our verified patient ratings and reviews to understand the particular physician's work better. Our insurance plan filter helps you further find an in-network internist in your vicinity. We also have an option for video consultation in case you cannot visit them in person.


Our online patient support center can help you locate internists who accept your insurance. Through Zocdoc, you can link your medical, dental, and vision insurance plans to your account, though you can use only one plan per appointment.


You can include details about your secondary insurance in the appointment notes if you have multiple insurance plans. Alternatively, you can input your secondary insurance information directly if your healthcare provider uses Zocdoc’s Intake forms.


After you have decided upon the practitioner of your choice, you can book an appointment. Thanks to Zocdoc, finding an internist near you in Riverside is now easier! Booking appointments on Zocdoc is simple, secure, and 100% free!


Internist statistics in Riverside, California


According to a 2021 annual health report by the California Health Care Foundation, internal medicine was the most popular field for doctors in California, with around 9,663 active patient care physicians in 2020.


The American Association of Medical Colleges, in their California Physician Workforce Profile, found that in 2017, the total number of active doctors of internal medicine in the state was about 15,084. The profile also revealed approximately 2,602 people for every such physician in the state. Of the internist workforce, 39.8%, i.e., around 5,990 physicians, were females. About 4,504 physicians (29.9% of all internists) were in the 60+ age group.


As per the U.S. Bureau of Labor Statistics data, in May 2023, California had the second-highest number of general internal medicine physicians, at around 5,940.


Sources


California Health Care Foundation

American Association of Medical Colleges

U.S. Bureau of Labor Statistics

Medical News Today

Raleigh Medical Group

Millennium Medical Care

Johnson Memorial Health

Orlando Clinical Research Center

Save Lives Tomorrow

Cleveland Clinic

St. George’s University School of Medicine



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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