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315 verified UnitedHealthcare Doctors in Fontana, 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 06/26/2026
Availability last updated 06/26/2026

Carbon Health Urgent Care - Rancho Cucamonga

Urgent Care Clinic
4.79
·101 reviews
They need a primary doctor at the office. - Jan 24, 2023 by Jose S.Click to read more
6 mi · 7831 Monticello Ave, Ste 1102, Rancho Cucamonga, CA 91739
In-network · UnitedHealthcare
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

Dr. Mehul Sonawala, MD

Primary Care Doctor
4.78
·46 reviews
The doctor listened carefully to my concerns and was able to immediately prescribe medications. He also gave me advice on how to obtain emergency medical insurance. I highly recommend this doctor and the medical facility for services. - Apr 10, 2025 by raymond C.Click to read more
8 mi · 4013 Brockton Ave, Riverside, CA 92501
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · 25+ years of experience · Highly recommended · Excellent wait time · Expertise in anxiety disorders + 9 more ·
Read bio
Dr. Mehul Sonawala is an accomplished physician with expertise in Internal Medicine, Bioengineering, and Cardiology. He earned his Doctor of Medicine from the University of Mumbai and completed his residency in Internal Medicine at Los Angeles General Medical Center. Additionally, he holds an MD in ...Click to read more
Next available: Thu, Jul 2

Dr. Rishi Majithia, MD

Primary Care Doctor
4.80
·332 reviews
He was very competent and knoweldgeble, and i took his advice and got into the specialists asap - Sep 16, 2025 by Jennifer C.Click to read more
13 mi · 99 N San Antonio Ave, Ste 210, Upland, CA 91786
In-network · UnitedHealthcare
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: Mon, Jun 29

Carbon Health Urgent Care - Eastvale

Urgent Care Clinic
4.85
·67 reviews
The experience was great. I didn’t have to wait long, and I was out right away. by Tamara L.Click to read more
12 mi · 14117 Limonite Ave, Eastvale, CA 91752
In-network · UnitedHealthcare
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

Regina Robertson, NP

Family Nurse Practitioner
4.32
·22 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
8.5 mi · 4646 Brockton Ave, Ste 201, Riverside, CA 92506
In-network · UnitedHealthcare
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: Mon, Jun 29

Vanessa Constantino, NP

Nurse Practitioner
3.17
·6 reviews
Unable to pick up prescriptions because the orders were improperly order and the dosage was too high. Pharmacy would not fill prescriptions because dosage went against proper guidelines. - Apr 10, 2026 by Nicholas S.Click to read more
10 mi · 6926 Brockton Ave, Ste 8, Riverside, CA 92506
In-network · UnitedHealthcare
Accepting new patients

Karmbir Takhar, APRN, NP

Family Nurse Practitioner
4.90
·10 reviews
Really nice and was able to accommodate my requests. Overall, super understanding and caring. - Jun 9, 2026 by Jessica R.Click to read more
11.5 mi · 11306 Mountain View Ave, Ste C, Loma Linda, CA 92354
In-network · UnitedHealthcare
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 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: Tue, Jun 30

Carbon Health Urgent Care - Corona

Urgent Care Clinic
4.85
·80 reviews
Very Friendly, I was seen within minutes and it was great because it was close to home. - Apr 27, 2023 by Bridget B.Click to read more
19.5 mi · 3955 Bedford Canyon Rd, Ste 103, Corona, CA 92883
In-network · UnitedHealthcare
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

Dr. Paul Usborne, MD

Primary Care Doctor
4.78
·90 reviews
I would definitely recommend this doctor's office friendly staff very clean and accurate on timing !!! - Jan 20, 2023 by Daniel R.Click to read more
26.5 mi · 256 W San Bernardino Rd, Covina, CA 91723
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · 24 years of experience · Excellent wait time · Expertise in lower back pain + 9 more ·
Read bio
Dr. Usborne is a Southern California native. He was born and raised in San Diego and graduated from Bonita Vista High School. He earned his undergraduate degree at the University of California, Davis. He received his doctorate degree from AUC School of Medicine and completed his post-graduate educat...Click to read more
Next available: Mon, Jun 29

Dr. Aaron Lin, DO

Primary Care Doctor
4.94
·52 reviews
Friendly staff along with warm office environment. Doctor Lin engaged me in opening up about my medical history as that was my first visit. You feel at ease talking to Dr. Lin. - Sep 21, 2024 by Haissam D.Click to read more
22 mi · 253 S. Diamond Bar Blvd, Diamond Bar, CA 91765
In-network · UnitedHealthcare
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, Jul 21

Dr. Eric Lee, DO

Primary Care Doctor
4.91
·76 reviews
Great, patient communicator. Will go back to him next year for my physical. - Dec 17, 2024Click to read more
22 mi · 253 S. Diamond Bar Blvd, Diamond Bar, CA 91765
In-network · UnitedHealthcare
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: Wed, Jul 22

Dr. Karen Kay G Alfonso, MD

Pediatrician
5.00
·1 review
17 mi · 15855 Pomona Rincon Rd, Chino Hills, CA 91709
In-network · UnitedHealthcare
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: Thu, Jul 30

Dr. Meisam Fekri, MD

Primary Care Doctor
4.81
·225 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
28.5 mi · 222 N Sunset Ave, Ste. F, West Covina, CA 91790
In-network · UnitedHealthcare
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: Tue, Jun 30

Dr. Brian T Lai, DO

Primary Care Doctor
5.00
·33 reviews
27 mi · 4300 Rose Dr, Yorba Linda, CA 92886
In-network · UnitedHealthcare
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: Mon, Jul 20

Dr. Jim Tran, DO

Primary Care Doctor
5.00
·33 reviews
27 mi · 4300 Rose Dr, Ste Q, Yorba Linda, CA 92886
In-network · UnitedHealthcare
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: Tue, Aug 4

Carbon Health Urgent Care - Placentia

Urgent Care Clinic
4.85
·71 reviews
Very nice clinic! Dr was very kind and helpful! Would totally recommend for any urgent care needs! - Apr 29, 2025 by Elizabeth B.Click to read more
27.5 mi · 858 N Rose Dr, Placentia, CA 92807
In-network · UnitedHealthcare
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

Dr. Karoline Wang, MD

Primary Care Doctor
4.91
·35 reviews
Friendly professional - Sep 5, 2025 by Antonio N.Click to read more
32.5 mi · 13400 Jamboree Rd, Ste 200, Irvine, CA 92602
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · 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: Tue, Jul 14

Carbon Health Urgent Care - La Habra

Urgent Care Clinic
4.90
·62 reviews
It was very upbeat and streamlined. In and out and my meds were sent to my Pharmacy. Excellent experience! - Oct 25, 2025 by HAROLD G.Click to read more
32.5 mi · 1040 W Imperial Hwy, La Habra, CA 90631
In-network · UnitedHealthcare
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

Dr. Jeremy Joseph Feck, DO

Primary Care Doctor
5.00
·4 reviews
32.5 mi · 845 W La Veta Ave, Orange, CA 92868
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended ·
Read bio
Dr. Jeremy Feck is board certified in Family Medicine. He completed medical school at Lake Erie College of Osteopathic Medicine before finishing his residency at Mercy Medical Center in Redding California. Dr. Feck’s areas of expertise and clinical areas of interest include care for patient’s of all...Click to read more
Next available: Thu, Jul 16

Justine Kim, FNP-C, FNP

Family Nurse Practitioner
4.83
·6 reviews
Dr. Justine Kim was very attentive, ask a lot of questions, and had wonderful bedside manner, this was the first time seeing her and I'm very impressed.Click to read more
27.5 mi · 17310 Bear Valley Rd, B101, Victorville, CA 92395
In-network · UnitedHealthcare
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 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 ...Click to read more
Next available: Wed, Jul 1

Dr. Mohammad Nabulsi, MD

Primary Care Doctor
4.93
·69 reviews
Overall, once you arrived , the staff treated you with the upmost respect . The whole visit was outstanding! The doctor listen and helped explain every part of the visit. I would highly recommend making a appointment with this Facility! Awesome, Awesome,Awesome!!! - Aug 31, 2022 by John N.Click to read more
32 mi · 1201 W Whittier Blvd, La Habra, CA 90631
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time · Expertise in chronic diabetes + 4 more ·
Read bio
My goal is to provide compassionate, comprehensive care by treating patients with evidence-based medicine. I am dedicated to ensuring that my patients maintain good health while addressing their preventive healthcare needs and managing active and chronic diseases across all ages. I earned my Doctor ...Click to read more
Next available: Mon, Aug 3

Dr. Vincent Pan, DO

Primary Care Doctor
4.88
·16 reviews
32.5 mi · 845 W La Veta Ave, Orange, CA 92868
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended ·
Read bio
Dr. Vincent Pan is a board certified Family Medicine physician. An Orange County native, he completed medical school at Touro Nevada College of Osteopathic Medicine before finishing his residency at Loma Linda University Health. He has clinical experience in FQHC, private practice, preventative heal...Click to read more
Next available: Tue, Jul 21

Dr. Larissa Isterabadi, MD

Pediatrician
4.97
·32 reviews
27 mi · 4300 Rose Dr, Ste E, Yorba Linda, CA 92886
In-network · UnitedHealthcare
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: Thu, Jul 9

Dr. Jon Kramer, MD

Pediatrician
5.00
·31 reviews
27 mi · 4300 Rose Dr, Ste E, Yorba Linda, CA 92886
In-network · UnitedHealthcare
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: Thu, Jul 9

Dr. Billy Zhang, MD

Primary Care Doctor
5.00
·30 reviews
32.5 mi · 13400 Jamboree Rd, Ste 200, Irvine, CA 92602
In-network · UnitedHealthcare
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, Jul 28

Dr. David Joung, MD

Pediatrician
5.00
·30 reviews
27 mi · 4300 Rose Dr, Ste B, Yorba Linda, CA 92886
In-network · UnitedHealthcare
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, Jul 22

Dr. Marco Paez, MD

Gastroenterologist
4.94
·77 reviews
Doctor was courteous and explained things in detail. Very easy to work with. Highly recommended! - Jan 8, 2025 by Hongdi X.Click to read more
27.5 mi · 16677 E Yorba Linda Blvd, Yorba Linda, CA 92886
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time · Expertise in upper gi endoscopy + 1 more ·
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: Thu, Jul 16

Dr. Christina Steinhauser, DO

Gastroenterologist
4.97
·93 reviews
She is so easy to talk to. Explained everything we needed to know. She answered all our questions. She’s an amazing Dr - Jun 3, 2025 by MARK K.Click to read more
27.5 mi · 16677 E Yorba Linda Blvd, Yorba Linda, CA 92886
In-network · UnitedHealthcare
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: Wed, Jul 29

Dr. Marc Bennett, MD

Pediatrician
5.00
·30 reviews
31 mi · 2501 E Chapman Ave, Orange, CA 92869
In-network · UnitedHealthcare
Accepting new patients · 25+ years of experience · Highly recommended ·
Read bio
Please note that this provider only sees children and adolescents under the age of 18. Dr. Marc Bennett enjoys the energy and enthusiasm children bring into his medical practice. He is continually amazed at the strength of character and spirit that young people possess. Dr. Bennett prides himself o...Click to read more
Next available: Mon, Jun 29

Dr. Nusrat Ahsan, MD

Primary Care Doctor
4.87
·95 reviews
Good overall doctor answered my questions and addressed my concerns. - Jun 29, 2023 by Edie C.Click to read more
35.5 mi · 22621 Lake Forest Dr, Lake Forest, CA 92630
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time · Expertise in chronic diabetes + 5 more ·
Read bio
While Dr. Ahsan was growing up, she always wanted to be a doctor. Her mother told her stories about how her father wanted his youngest daughter to become a doctor, but he passed away just before she was born. Ever since, she has felt a strong obligation to fulfill his wish. She believes that we, as ...Click to read more
Next available: Thu, Jul 16

Dr. Roya Hormozdiaran, MD

Primary Care Doctor
4.82
·127 reviews
Great doctor, very friendly, will see again for any other issues, thank you - Nov 22, 2025 by Cindy M.Click to read more
35.5 mi · 62 Corporate Park, Ste 130, Irvine, CA 92606
In-network · UnitedHealthcare
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: Tue, Jul 14

Dr. Robert Frankel, MD

Pediatrician
5.00
·31 reviews
We are so grateful for Doc Frankel! He was able to help our son immediately. Thank you Doc, Frankel. - Feb 20, 2024 by Liam M.Click to read more
31 mi · 2501 E Chapman Ave, Orange, CA 92869
In-network · UnitedHealthcare
Accepting new patients · 25+ years of experience · Highly recommended · Excellent wait time ·
Read bio
Dr. Robert Frankel chose to be a pediatrician because of his love for children. He enjoys being able to bring about a change for the better in the lives of his young patients. Dr. Frankel received his medical degree from the University of Cincinnati's College of Medicine, in Cincinnati, Ohio. He the...Click to read more
Next available: Tue, Jun 30

Dr. Reza Govashiri, MD

Primary Care Doctor
5.00
·37 reviews
Great experience, very nice staff, prompt, and I really liked Dr G. - Nov 14, 2022 by Sherrie C.Click to read more
35.5 mi · 22621 Lake Forest Dr, Lake Forest, CA 92630
In-network · UnitedHealthcare
Accepting new patients · 25+ years of experience · Highly recommended · Excellent wait time · Expertise in chronic diabetes + 9 more ·
Read bio
Dr. Reza Govashiri is an internist practicing for almost 30 years, currently working in Lake Forest, California for Mission Heritage Medical Group. He completed medical school at Tabritz University of Medical Sciences before finishing his internship and residency at Brooklyn Hospital Center. Dr. Go...Click to read more
Next available: Wed, Jul 22

Carbon Health Urgent Care - Whittier

Urgent Care Clinic
4.94
·79 reviews
They were very thorough. - May 18, 2023 by Jerry G.Click to read more
36 mi · 11806 Whittier Blvd, Whittier, CA 90601
In-network · UnitedHealthcare
Accepting new patients · Highly recommended ·
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

Dr. Yama Afshar, DO

Primary Care Doctor
4.84
·108 reviews
Great work done by all and a very nice environment. - Mar 6, 2023 by Emily G.Click to read more
37 mi · 24321 Avenida De La Carlota, Laguna Hills, CA 92653
In-network · UnitedHealthcare
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: Thu, Jul 9

Dr. Howard Pyo, DO

Family Physician
4.88
·1311 reviews
doctor understood my dilemma and I got medicine to cure my problem. - Nov 10, 2023 by Alan A.Click to read more
30.5 mi · 2000 E Chapman Ave, Ste 100, Fullerton, CA 92831
In-network · UnitedHealthcare
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. You can request that you are seen only by Dr Pyo without resident or student involvement as we fully respect your choice. Dr. Howard Pyo is a board-certified fam...Click to read more
Next available: Tue, Jul 14

Dr. Sarah O'Loughlin, MD

Pediatrician
4.91
·32 reviews
31 mi · 2501 E Chapman Ave, Orange, CA 92869
In-network · UnitedHealthcare
Accepting new patients · 22 years of experience · Highly recommended ·
Read bio
Dr. O'Loughlin believes in preventative medicine and is dedicated to assisting children and their parents as they make decisions about living a healthy lifestyle. As a parent herself, she values the insights that parents provide on the health and well-being of their children when discussing importan...Click to read more
Next available: Tue, Jul 14

Dr. Marta Sarmiento, MD

Pediatrician
4.85
·33 reviews
Great doctor and staff. Highly recommended for parents seeking for new pediatric doctor. - Oct 13, 2022 by Aaron T.Click to read more
32.5 mi · 725 W La Veta Ave, Ste 240, Orange, CA 92868
In-network · UnitedHealthcare
Accepting new patients · 25+ years of experience · Highly recommended · Excellent wait time ·
Read bio
Dr. Marta Sarmiento is a dedicated and diligent pediatrician serving the community of Orange, CA. She earned her Doctor of Medicine degree from the University of California, Irvine. Dr. Sarmiento runs her own practice, where she provides care for annual physicals, preventative care and immunizati...Click to read more

Dr. Haleh Khoshreza, MD

Primary Care Doctor
4.77
·75 reviews
Everything was fantastic! Dr Khoshreza was a great listener and very knowledgeable! Highly recommend her - Oct 27, 2025 by Leila N.Click to read more
36.5 mi · 23141 Moulton Pkwy, Ste 108, Laguna Hills, CA 92653
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Khoshreza has been practicing as a primary care physician, focusing on preventive medicine and managing chronic diseases. With a passion for guiding patients toward healthier lifestyles, she is committed to fostering strong patient relationships and providing personalized, evidence-based care.Click to read more
Next available: Fri, Aug 14

Dr. Julie Navarro, DO

Primary Care Doctor
4.69
·78 reviews
She asked me all the questions that I needed to start with her. Changing my doctor was a small way to get a new doctor. - Apr 15, 2026 by Irene M.Click to read more
38.5 mi · 12052 Imperial Hwy, Ste 102, Norwalk, CA 90650
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients ·
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. Julie Navarro is a skilled and experienced family physician. She sees patients in person at Copa De Oro Medical Group in ...Click to read more
Next available: Mon, Jul 6
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Zocdoc lets you search specifically for a Primary Care Doctor in Fontana who takes UnitedHealthcare. 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 UnitedHealthcare Primary Care Doctor in Fontana?

Zocdoc is a free online service that helps patients find UnitedHealthcare Doctors in Fontana and book appointments instantly. You can search for UnitedHealthcare Doctors in Fontana by symptom or visit reason. 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 Primary Care Doctor in Fontana who takes UnitedHealthcare insurance?

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

How can I find a UnitedHealthcare Primary Care Doctor in Fontana who sees patients after hours?

On Zocdoc, you can search specifically for UnitedHealthcare Doctors in Fontana with availability after 5 p.m.

How can I find a top-rated UnitedHealthcare Primary Care Doctor in Fontana?

You can use Zocdoc to find UnitedHealthcare Doctors in Fontana 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 Primary Care Doctor online in Fontana?

Doctors in Fontana 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 Doctors who offer video visits.

Are video visits with a Primary Care Doctor online covered by UnitedHealthcare?

Most insurers provide coverage for video visits at the same cost as in-person visits. You can search on Zocdoc specifically for Doctors in Fontana who accept UnitedHealthcare 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 UnitedHealthcare Primary Care Doctor in Fontana who sees patients in the morning or evening?

Zocdoc lets you search specifically for a Primary Care Doctor 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 UnitedHealthcare Primary Care Doctor in Fontana who sees patients during the weekend?

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

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Zocdoc›Doctors›Orange County, CA›Fontana, CA›UnitedHealthcare