Home › Doctors › California › Diamond Bar › Primary care doctors
Primary care doctors who accept Medicare in Diamond Bar, CA
CMS lists 81 clinicians in this specialty with a practice address in Diamond Bar. Accept Medicare assignment (the Medicare-approved amount as full payment): 81. Offer telehealth: 51.
What a visit costs with Original Medicare
Typical amounts Medicare approves in ZIP 91765 (2024 Medicare rates, the latest CMS has published): a new-patient visit $142, of which you pay about $36; a follow-up visit $110, of which you pay about $27 — the 20% coinsurance after the yearly Part B deductible. Clinicians who don't accept assignment can charge up to 15% more; with a Medicare Advantage plan, your plan's copay applies instead.
Is this your organization or practice? Feature it at the top of this page — $49 for 30 days →
Order: clinicians who accept assignment first, then by MIPS score (highest first), then by last name.
Jaspreet Nanra, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100✓ TelehealthGraduated 2017 · University of California, Davis School of MedicineMaleDrug and device company payments (2025): $316Sukhvir Singh, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100Graduated 2008MaleDrug and device company payments (2025): $51Hermilito Villar, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100Graduated 1979MaleDrug and device company payments (2025): $165Christopher S. Aou, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 1997 · College of Osteo Med of the Pacific at PomonaMaleDrug and device company payments (2025): $218Zarshid Arbabi, MD
✓ Accepts Medicare assignmentGraduated 1997FemaleLorindha Argudo, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2003 · Ohio State University College of MedicineFemalePatrick J. Bachoura, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2017MaleAnthony I. Bae, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1997 · University of Southern California Keck School of MedicineMaleDrug and device company payments (2025): $400Ruben Cabral, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1989 · University of California, San Francisco School of MedicineMaleDrug and device company payments (2025): $49Vince Patrick Cacho, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2007 · Loma Linda University School of MedicineMaleDrug and device company payments (2025): $146Steve I. Chan, MD
✓ Accepts Medicare assignmentGraduated 1995 · Albert Einstein College of Medicine of Yeshiva UniversityMaleDrug and device company payments (2025): $27Kevin Chang, MD
✓ Accepts Medicare assignmentGraduated 1983MaleDrug and device company payments (2025): $55Cho-Han V. Cheng, MD
✓ Accepts Medicare assignmentGraduated 1995 · Indiana University School of MedicineMaleBonnie C. Cheung, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2010FemaleDrug and device company payments (2025): $129Wonsick Choe, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1997MaleDrug and device company payments (2025): $297Beau M. Chung, DO
✓ Accepts Medicare assignmentGraduated 2015 · College of Osteo Med of the Pacific at PomonaMaleChris E. Davenport, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2009MaleNicole S. Duh, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2016FemaleAllison K. Foley, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1998 · Johns Hopkins University School of MedicineFemaleDrug and device company payments (2025): $123Anne E. Ford, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1998 · University of California, Irvine, California College of MedicineFemaleDrug and device company payments (2025): $22Maximilian E. Garces, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1990 · Illinois Medical CollegeMaleDrug and device company payments (2025): $586Leo S. Garcia Jr., MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1995 · Howard University College of MedicineMaleOther offices in Diamond Bar: 1Drug and device company payments (2025): $51Mark F. Giglio, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1988 · University of Virginia School of MedicineMaleMatthew S. Glassy, MD
✓ Accepts Medicare assignmentGraduated 2012 · Michigan State University College of Human MedicineMaleThomas T. Ha, MD
✓ Accepts Medicare assignmentGraduated 1975MaleDrug and device company payments (2025): $2,296Alaa Hajal, MD
✓ Accepts Medicare assignmentGraduated 2011MaleDrug and device company payments (2025): $56Carolyn A. Hardy, MD
✓ Accepts Medicare assignmentGraduated 2003 · Northwestern University Feinberg Medical SchoolFemaleNicolas R. Hernandez
✓ Accepts Medicare assignment✓ TelehealthGraduated 2007MaleDrug and device company payments (2025): $68Jun T. Huang, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2002 · Western Eclectic College of Medicine and SurgeryMaleRizwana B. Hussain, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1977FemaleDrug and device company payments (2025): $170Ana Ivanova, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1982FemaleOther offices in Diamond Bar: 1Drug and device company payments (2025): $156Richard Kao, MD
✓ Accepts Medicare assignmentGraduated 2010 · State University of New York Downstate Medical CenterMaleHuda S. Khaleel, MD
✓ Accepts Medicare assignmentGraduated 2005FemaleDaniel J. Kim, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1997 · University of Southern California Keck School of MedicineMaleDrug and device company payments (2025): $29Jae K. Kim, MD
✓ Accepts Medicare assignmentGraduated 1999 · Temple University School of MedicineMaleDrug and device company payments (2025): $239Lina Kim, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2016FemaleDrug and device company payments (2025): $753Patrick T. Koo, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2012 · Pennsylvania State University College of MedicineMaleOther offices in Diamond Bar: 1Drug and device company payments (2025): $1,709Eric J. Lee, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2016MaleOther offices in Diamond Bar: 1Drug and device company payments (2025): $290Jieli Li, MD
✓ Accepts Medicare assignmentGraduated 2003FemaleLilian Li, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2020 · Touro Un Col of Osteopathic Medicine, HendersonFemaleDrug and device company payments (2025): $23Aaron Lin, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2015MaleDrug and device company payments (2025): $62Christian M. Lising, MD
✓ Accepts Medicare assignmentGraduated 1997 · University of California, Irvine, California College of MedicineMaleJudy A. Losco, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 1996FemaleOther offices in Diamond Bar: 1Drug and device company payments (2025): $1,018Jennifer T. Lu, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2012FemaleSeymour C. Lu, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2005 · University of California, Geffen School of MedicineMaleWesley L. Miao, MD
✓ Accepts Medicare assignmentGraduated 2004MaleScott Middleton, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1980MaleDrug and device company payments (2025): $1,007John D. Murashige, MD
✓ Accepts Medicare assignmentGraduated 1983 · University of California, Irvine, California College of MedicineMaleBradley S. Neutel, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2019MaleDrug and device company payments (2025): $1,335Que H. Nguyen, MD
✓ Accepts Medicare assignmentGraduated 1998 · Medical College of PennsylvaniaFemalePaul T. Nguyenfa, MD
✓ Accepts Medicare assignmentGraduated 2013MaleDrug and device company payments (2025): $297Dean I. Okimoto, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1981MaleDrug and device company payments (2025): $687Jonathan D. Ou, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2009MaleOther offices in Diamond Bar: 1Drug and device company payments (2025): $20Yann Yi Pan, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2003FemaleParvita P. Panchal, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2018 · Lake Erie College of Osteopathic Medicine, BradentonFemaleDrug and device company payments (2025): $62Billie K. Park, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2007MaleDrug and device company payments (2025): $763Shivani K. Patel, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2011FemaleOther offices in Diamond Bar: 1Drug and device company payments (2025): $2,544Brandon T. Pham, MD
✓ Accepts Medicare assignmentGraduated 2000 · Tufts University School of MedicineMaleJenny N. Phan, DO
✓ Accepts Medicare assignmentGraduated 2012FemaleVijay K. Prabhakar, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2015 · Duke University School of MedicineMaleDrug and device company payments (2025): $1,920Julian R. Prieto, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2020MaleSarom Pyun, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2013 · University of California, Irvine, California College of MedicineFemaleDrug and device company payments (2025): $106Mohammad U. Qazi, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2010MaleDavid E. Rhodes, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1983 · University of California, Geffen School of MedicineMaleOther offices in Diamond Bar: 1Drug and device company payments (2025): $121David A. Ruckman, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1988 · George Washington University School of MedicineMaleTherese G. Santos, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2020FemaleDrug and device company payments (2025): $585Biren G. Shah, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2001MaleDrug and device company payments (2025): $393Hitendrah H. Shah, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1977MaleDrug and device company payments (2025): $119Manav D. Shah, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2009MaleEkta Sharma, MD
✓ Accepts Medicare assignmentGraduated 2012FemaleDrug and device company payments (2025): $230Yeyong Shin, DO
✓ Accepts Medicare assignmentGraduated 2012FemaleDouglas G. Starr, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1978 · Un of California, Irvine, College of MedicineMaleOther offices in Diamond Bar: 1Drug and device company payments (2025): $76Martin C. Tien, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1997 · New York Medical CollegeMaleKim N. Tran, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2017 · Lake Erie College of Osteopathic Medicine, ErieFemaleDrug and device company payments (2025): $23Muhammad Umer, MD
✓ Accepts Medicare assignmentGraduated 2003MaleDrug and device company payments (2025): $130Monica R. Van Norden, MD
✓ Accepts Medicare assignmentGraduated 2003 · University of California, Irvine, California College of MedicineFemaleDavid Vuu, DO
✓ Accepts Medicare assignmentGraduated 2022MaleSteven D. Walsh, MD
✓ Accepts Medicare assignmentGraduated 1994 · University of California, Irvine, California College of MedicineMaleYuh-Huey Wang, MD
✓ Accepts Medicare assignmentGraduated 1994 · Albert Einstein College of Medicine of Yeshiva UniversityFemaleDrug and device company payments (2025): $259Pei-Chi Wu, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2008 · Western University of Health Sciences College of Dental MedMaleDrug and device company payments (2025): $221Stephen Yoon, MD
✓ Accepts Medicare assignmentGraduated 1998 · Rutgers New Jersey Medical SchoolMaleDrug and device company payments (2025): $234
Before you book
This list comes from Medicare's enrollment records, not from reviews. Call the office to confirm the clinician is taking new Medicare patients. With Original Medicare, a clinician who accepts assignment can only charge you the Medicare deductible and coinsurance; one who doesn't may charge up to 15% more than the Medicare-approved amount. If you have a Medicare Advantage plan, check that the clinician is in the plan's network.
The MIPS final score (0–100) comes from Medicare's Merit-based Incentive Payment System for 2024. It combines quality measures, cost, improvement activities and use of certified health records, and it sets a payment adjustment. Clinicians who report as a group share the group's score. It is not a patient rating, and many clinicians have no published score.
Payments from drug and medical device companies come from CMS Open Payments (2025 general payments: meals, travel, consulting and speaking fees, gifts and similar), summed for each clinician. Receiving payments is legal and common and does not mean a clinician did anything wrong.
Other specialists in Diamond Bar
- Nurse practitioners21
- Cardiologists12
- Dermatologists6
- Orthopedic surgeons7
- Gastroenterologists4
- Optometrists12
- Podiatrists3
- Pulmonologists6
- Endocrinologists4
- Rheumatologists4
- Oncologists7
- Psychiatrists11
- Psychologists7
- Therapists and counselors4
- Physical therapists16
- Chiropractors5
Other care in Diamond Bar
Nursing homes · Dialysis centers · Home health agencies · Hospices
Nearby cities
Enrollment, addresses and scores are as reported to CMS and can change. This is not a list of in-network providers for any Medicare Advantage plan, and it is not medical advice. Source: CMS Provider Data Catalog — Doctors and Clinicians National Downloadable File, Clinician MIPS Performance 2024 and Facility Affiliation Data (released Oct 2, 2026).