Browse specialties
Chiropractors
Dentists
Dermatologists
Ear, Nose & Throat Doctors
Endocrinologists
Eye Doctors
OBGYNs
Ophthalmologists
Optometrists
Orthopedic Surgeons
Podiatrists
Primary Care Doctors
Psychiatrists
Psychologists
Therapist-Counselors
See all specialties A-Z
Zocdoc
HomeAbout usPressCareersHelp
Contact
service@zocdoc.com855-962-3621
Discover
The Paper Gown: Stories for and about patientsThe Script: Insights for doctorsCommunity StandardsData and privacyVerified reviewsTech BlogNew
Are you a top doctor or health service?
Try Zo, your AI Phone AssistantList your practice on ZocdocLearn about Zocdoc for Health SystemsBecome an EHR partner
Insurance Carriers
Top Specialties
Welcome to Zocdoc!
Book local doctors who take your insurance
Sign up
For providers
Grow your practice
For patients
Browse doctors
Browse practices
Browse hospitals
Browse insurances
Browse locations
Browse conditions
Browse procedures
Browse treatments
Zocdoc
HomeAbout usPressCareersHelp
Contact
service@zocdoc.com855-962-3621
Discover
The Paper Gown: Stories for and about patientsThe Script: Insights for doctorsCommunity StandardsData and privacyVerified reviewsTech BlogNew
Are you a top doctor or health service?
Try Zo, your AI Phone AssistantList your practice on ZocdocLearn about Zocdoc for Health SystemsBecome an EHR partner
Insurance Carriers
Top Specialties
HelpList your practice on Zocdoc
Sign up

Find an in-network doctor from over 10,000 insurance plans

Add your insurance to see in-network doctors
insurance link for 300
insurance link for 307
insurance link for 323
insurance link for 356
insurance link for 324
See all (1,000+)
315 verified UnitedHealthcare Doctors in Diamond Bar, CA
Zocdoc verifies all providers before they can appear in Zocdoc search results. Every provider that appears in search is open to new patients.
In-network providersInsurance logo
Availability last updated 09/29/2026
Availability last updated 09/29/2026

Dr. Aaron Lin, DO

Primary Care Doctor
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
0.5 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, Oct 27

Dr. Eric Lee, DO

Primary Care Doctor
4.91
·77 reviews
staff was nice, welcoming. Dr was thorough and made sure I understood everything. - Jul 27, 2022 by Ian R.Click to read more
0.5 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: Tue, Oct 27

Dr. Meisam Fekri, MD

Primary Care Doctor
4.80
·243 reviews
Dr Fekri is very nice & answers questions clearly & understandably. - Dec 8, 2024 by Yolanda U.Click to read more
8 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: today

Dr. Rishi Majithia, MD

Primary Care Doctor
4.81
·357 reviews
Good wait times , friendly staff and professional doctor. - Feb 27, 2025 by Andres S.Click to read more
9.5 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
***We DO NOT accept HMO plans or out-of-state insurance plans. You will be charged cash for those appointments. We do not prescribe controlled substances. All pre-visit information must be filled out in a timely manner before your appointment, or you will be subject to cancellation. Please review...Click to read more
Next available: today

Dr. Alexander Tran, DO

Primary Care Doctor
4.90
·39 reviews
I had such a great experience with Soojin! Office is very clean and pleasant. I am looking forward my coming visit. by JLClick to read more
12 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
Dr. Alexander Tran is an Internal Medicine physician at Pyo Clinic, seeing adult patients at our Fullerton and Upland, CA locations, as well as through virtual consultations. He provides comprehensive primary care, from preventive visits and routine health screenings to the diagnosis and management ...Click to read more
Next available: today

Dr. Lubna Isho, DO

Primary Care Doctor
4.82
·251 reviews
Great, knowledgeable and caring Doctor! Kindly accommodated my emergency appointment , and provided good advice and care. - Sep 23, 2022 by Elina W.Click to read more
6 mi · 250 W Bonita Ave, #150, Pomona, CA 91767
In-network · UnitedHealthcare
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, Oct 27

Dr. Samuel Yang, DO

Primary Care Doctor
5.00
·31 reviews
Very nice and professional staff! Everyone was so helpful making sure I got everything I needed. Absolutely the best! ZERO wait time! Doctor came to check in on me within five minutes of being sat. - Aug 27, 2025 by Dasom K.Click to read more
9.5 mi · 955 W Imperial Hwy, Ste 110, Brea, CA 92821
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Samuel Yang is a board-certified family physician with Providence St. Jude Heritage Medical Group. He completed medical school at Touro College of Osteopathic Medicine before finishing residency and internship at Loma Linda University Medical Center. His clinical areas of interest include everyt...Click to read more

Dr. Brian T Lai, DO

Primary Care Doctor
5.00
·33 reviews
9 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, Oct 19

Dr. Jim Tran, DO

Primary Care Doctor
5.00
·33 reviews
9 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: Fri, Oct 30

Dr. Mohammad Nabulsi, MD

Primary Care Doctor
4.93
·69 reviews
Professional and helpful, medium wait time for actual video appointment - Sep 7, 2022 by Brian B.Click to read more
10.5 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: Fri, Oct 2

Dr. Azhar Majeed, MD, FACP

Primary Care Doctor
4.80
·137 reviews
Yes, seemed genuinely concerned. Wanted to address my issues through testing and exams. - Feb 26, 2025Click to read more
11 mi · 1042 San Bernardino Rd, Upland, CA 91786
In-network · UnitedHealthcare
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, Oct 15

Dr. Minh Trang Tran, MD

Primary Care Doctor
5.00
·30 reviews
10.5 mi · 1201 W Whittier Blvd, La Habra, CA 90631
In-network · UnitedHealthcare
Accepting new patients · Highly recommended ·
Read bio
Minh Tran, MD is a board-certified internal medicine physician with St. Jude Heritage Medical Group practicing in La Habra, CA.Click to read more
Next available: Fri, Oct 2

Dr. Howard Pyo, DO

Family Physician
4.88
·1369 reviews
I was able to book for a same-day appointment. Dr. Pyo was very kind and able to meet my medical needs. - Nov 3, 2023 by Naomi M.Click to read more
12 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: today

Dr. Divneet Wadhwa, MD

Primary Care Doctor
5.00
·6 reviews
I was able to see the doc right away. She answered all of my questions and I left feeling more confident about my health. by CWClick to read more
14.5 mi · 1781 W Romneya Dr, Ste B, Anaheim, CA 92801
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Friday clinic appointments are now open and accepting new patients! Book today to reserve your visit. Dr. Wadhwa founded Westlight Medical Group on the belief that exceptional healthcare begins with a personal connection. A Board-Certified Family Medicine Physician and Anaheim Hills native, Dr. ...Click to read more
Next available: Fri, Oct 2

Dr. Jon Kramer, MD

Pediatrician
5.00
·31 reviews
9 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, Oct 1

Dr. Karen Kay G Alfonso, MD

Pediatrician
5.00
·1 review
8 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: Wed, Oct 21

Dr. Sadia Moinuddin, MD, DABOM

Primary Care Doctor
4.74
·96 reviews
Doctor was helpful and provided useful information regarding questions. by CMClick to read more
17 mi · 12052 Imperial Hwy, Ste 102, Norwalk, CA 90650
In-network · UnitedHealthcare
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: Fri, Oct 2

Dr. Paola Ortiz, MD

Primary Care Doctor
4.59
·93 reviews
Very good experience everyone one was friendly and didn’t have a long wait - May 7, 2025 by Juana R.Click to read more
17 mi · 12052 Imperial Hwy, Ste 102, Norwalk, CA 90650
In-network · UnitedHealthcare
Also offers video visits · 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: Fri, Oct 2

Dr. David Joung, MD

Pediatrician
5.00
·31 reviews
9 mi · 4300 Rose Dr, Ste B, Yorba Linda, CA 92886
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
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, Oct 14

Dr. Larissa Isterabadi, MD

Pediatrician
4.97
·32 reviews
9 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: Wed, Oct 14

Dr. Marco Paez, MD

Gastroenterologist
4.86
·84 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
10 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: Tue, Oct 20

Dr. Christina Steinhauser, DO

Gastroenterologist
4.98
·122 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
10 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: Thu, Oct 22

Dr. Karoline Wang, MD

Primary Care Doctor
4.83
·36 reviews
Friendly professional - Sep 5, 2025 by Antonio N.Click to read more
21 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: today

Dr. Jeremy Joseph Feck, DO

Primary Care Doctor
5.00
·5 reviews
17.5 mi · 845 W La Veta Ave, Orange, CA 92868
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
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: Fri, Oct 2

Dr. Vincent Pan, DO

Primary Care Doctor
4.88
·16 reviews
17.5 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, Oct 27

Dr. Jenny Wang, DO

Primary Care Doctor
17.5 mi · 845 W La Veta Ave, Orange, CA 92868
In-network · UnitedHealthcare
Accepting new patients · Expertise in chronic high blood pressure + 1 more ·
Read bio
Dr. Jenny Wang is a boardcertified family medicine physician who has been in practice at community health centers dedicated to helping underserved populations and promoting health equity. She has relocated to Orange County in 2022 and looks forward to continue to care for a diverse patient populatio...Click to read more
Next available: Thu, Nov 5

Dr. Michael Truong, MD

Primary Care Doctor
4.97
·98 reviews
Doctor was very professional and good manners, His staff excelent, service on time, - Oct 4, 2025 by Carmen G.Click to read more
18.5 mi · 1535 17th St, Suite 104, Santa Ana, CA 92705
In-network · UnitedHealthcare
Accepting new patients · 15 years of experience · Highly recommended · Excellent wait time · Expertise in joint or tendon inflammation of the finger/wrist/hand + 7 more ·
Read bio
*Our Clinic* Introducing a brand-new clinic, designed to offer a small-town doctor's office experience right in the heart of OC. Our independent practice is owned and operated by the attentive physician who will be personally caring for you. Convenience is key, with ample parking space, a first-flo...Click to read more
Next available: Tue, Oct 20

Dr. Farhad Nassiri Afshar, MD

Primary Care Doctor
4.93
·30 reviews
I am a new patient. The receptionist was amazing. He knew who I was before I could even take out my insurance card. Dr Afshar saw me within minutes of my arrival and was very thorough with background inquiries and my overall health condition before we talked about my current issue. I think he car...Click to read more
23.5 mi · 62 Corporate Park, Ste 200, Irvine, CA 92606
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
PPO-only adult PCP/internal medicine in Irvine. Anthem Blue Cross PPO, Aetna PPO, Cigna PPO, and UnitedHealthcare PPO. Not Blue Shield of CA or HMO. I’m Farhad Nassiri Afshar, MD, an ABIM-certified internist and founder of Afshar Medical Group. I provide clear, practical, prevention-focused care f...Click to read more
Next available: Thu, Oct 1

Kayla Mathiowetz, PA-C

Physician Assistant (Gastroenterology)
15 mi · 710 N Euclid St, Ste 210, Anaheim, CA 92801
In-network · UnitedHealthcare
Accepting new patients ·
Read bio
Kayla Mathiowetz, PA-C, is a board-certified Physician Assistant at Gastrointestinal & Liver Consultants , providing care for patients in Santa Ana, Irvine, Anaheim, and Westminster, California. Originally from New England, she graduated from Northeastern University in Boston, Massachusetts with a ...Click to read more
Next available: Thu, Oct 8

Sarah Levitt, PA-C

Physician Assistant (Gastroenterology)
5.00
·8 reviews
I had an excellent experience with Dr. Levitt today. From the moment the appointment began, she was incredibly pleasant, kind, and welcoming, which immediately put me at ease. What stood out the most was how much she cared about getting the full picture of my health. Dr. Levitt took the time to t...Click to read more
15 mi · 710 N Euclid St, Ste 210, Anaheim, CA 92801
In-network · UnitedHealthcare
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: Thu, Oct 15

Dr. Billy Zhang, MD

Primary Care Doctor
5.00
·30 reviews
21 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: Fri, Oct 23

Dr. Wasim Raja, MD

Primary Care Doctor
4.85
·491 reviews
Very nice and friendly I was very happy with my visit.Click to read more
23 mi · 11100 Warner Ave, Ste 110, Fountain Valley, CA 92708
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · 25+ years of experience · Highly recommended · Excellent wait time · Expertise in sepsis + 3 more ·
Read bio
Dr. Wasim Raja is a skilled and experienced internist. He currently runs his own practice, based in Fountain Valley, CA, and holds licenses to practice in Texas, Nebraska, and Colorado. Fluency in English, Urdu, and Punjabi has made him accessible to various culturally diverse communities. Dr. Raj...Click to read more
Next available: Mon, Oct 5

Samantha Savage, RN

Family Nurse Practitioner
4.84
·19 reviews
Amazing everyone was friendly and professional would highly recommend to friends & family. by KSClick to read more
17 mi · 12052 Imperial Hwy, Ste 102, Norwalk, CA 90650
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Excellent wait time ·
Read bio
Ms. Samantha Savage is a highly skilled family nurse practitioner from Norwalk, CA. She serves patients at Copa De Oro Medical Group. Ms. Savage earned her master's degree in nursing from the University of San Diego. She takes a practical and collaborative approach, working closely with each indivi...Click to read more
Next available: Fri, Oct 2

Dr. James Kropac, DO

Primary Care Doctor
5.00
·14 reviews
Everyone was super friendly and helpful. Dr. K. Is absolutely great. Honestly a great experience overall. - Aug 11, 2026Click to read more
24 mi · 1704 Colorado Blvd, Los Angeles, CA 90041
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time
Next available: Fri, Oct 2

Dr. Jeffrey Messinger, MD

Pediatrician
4.94
·33 reviews
Doctor was very straightforward with what was going on with my daughter and when I should be concerned and when to bring her to the doctor or understand that she will be ok and recover at home. He was good with my daughter and made her feel comfortable. - Sep 15, 2022 by Ashley D.Click to read more
19.5 mi · 2212 E 4th St, Santa Ana, CA 92705
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. Board-certified in pediatrics, Dr. Messinger earned his Doctor of Medicine from Philadelphia University and Thomas Jefferson University. He completed his residency at the University of California, Irvine. His p...Click to read more
Next available: tomorrow

Dr. Artin Nazarian, MD

Primary Care Doctor
4.66
·352 reviews
Excellent work and professional staff Highly recommend - Oct 31, 2025 by Nora Y.Click to read more
26 mi · 1818 Verdugo Blvd, #207, GLENDALE, CA 91208
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · 23 years of experience · Excellent wait time · Expertise in chronic diabetes + 7 more ·
Read bio
Dr. Nazarian was raised in Glendale and after high school attended University of Southern California and received a degree in Exercise physiology and minor in Biology. He then attended medical school at St. George’s University. Dr. Nazarian did 3rd year of medical school in New York and finished in ...Click to read more
Next available: tomorrow

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
16.5 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: Thu, Oct 8

Carol Jung, PA-C

Physician Assistant
5.00
·23 reviews
They listened carefully, answered all my questions, and made me feel comfortable. I highly recommend them! by MCClick to read more
19.5 mi · 218 W 4th St, Santa Ana, CA 92701
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
I'm a Physician Assistant with a passion for developing relationships as well as meeting patients where they are — whether that means navigating a new diagnosis, managing a chronic condition, or simply being a provider who truly listens. With a background in adult primary care and a specialty in PM&...Click to read more
Next available: tomorrow

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
17.5 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. Naho Taguchi, MD

Pediatrician
19.5 mi · 2212 E 4th St, Santa Ana, CA 92705
In-network · UnitedHealthcare
Accepting new patients · 24 years of experience ·
Read bio
Dr. Naho Taguchi is a Pediatrician practicing in Orange County, CA.Click to read more
Next available: Fri, Oct 2
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
Setting up the appointment on Zocdoc and being able to wait in the comfort of my bed for my Dr to see me was so much better...I HIGHLY recommend Zocdoc.
Felisha N
I will recommend Zocdoc to everyone, Excellent experience, very friendly, Top 5 STARS.
Bozena G
10/10!!!! I woke up on Sunday with severe wisdom tooth pain. I was able to make an early appointment Monday morning...So so happy with my experience!
Lauren K
National Public Radio
New York Times
Yahoo
Self.com
Verge
Wall Street Journal
Frequently asked questions

How can I make a same-day appointment with a Primary Care Doctor in Diamond Bar who takes UnitedHealthcare insurance?

On average, patients who use Zocdoc can search for a Primary Care Doctor in Diamond Bar who takes UnitedHealthcare insurance, book an appointment, and see the Primary Care Doctor within 24 hours. Same-day appointments are often available, you can search for real-time availability of Doctors in Diamond Bar who accept UnitedHealthcare insurance and make an appointment online.

How can I find a Primary Care Doctor in Diamond Bar who takes UnitedHealthcare?

Zocdoc lets you search specifically for a Primary Care Doctor in Diamond Bar 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 Diamond Bar?

Zocdoc is a free online service that helps patients find UnitedHealthcare Doctors in Diamond Bar and book appointments instantly. You can search for UnitedHealthcare Doctors in Diamond Bar 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 Diamond Bar who takes UnitedHealthcare insurance?

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

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

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

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

You can use Zocdoc to find UnitedHealthcare Doctors in Diamond Bar 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 Diamond Bar?

Doctors in Diamond Bar 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 Diamond Bar 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 Diamond Bar 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 Diamond Bar who sees patients during the weekend?

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

Find doctors

Zocdoc›Doctors›Orange County, CA›Diamond Bar, CA›UnitedHealthcare