Home › Doctors › California › San Marino › Primary care doctors
Primary care doctors who accept Medicare in San Marino, CA
CMS lists 7 clinicians in this specialty with a practice address in San Marino. Accept Medicare assignment (the Medicare-approved amount as full payment): 7. Offer telehealth: 5.
Typical amounts Medicare approves in ZIP 91108 (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.
Mu Chien W. Chiang, DO
✓ Accepts Medicare assignmentMIPS score (2024): 89.1/100✓ TelehealthGraduated 2006 · New York College of Osteo Medicine of New York Institute of TechnologyMaleDrug and device company payments (2025): $639Chien Fang, MD
✓ Accepts Medicare assignmentMIPS score (2024): 89.1/100✓ TelehealthGraduated 1989 · University of Southern California Keck School of MedicineFemaleYa-Gin Hanna Huang, MD
✓ Accepts Medicare assignmentMIPS score (2024): 89.1/100✓ TelehealthGraduated 2021 · University of Southern California Keck School of MedicineFemaleElisa C. Alvarado, MD
✓ Accepts Medicare assignmentMIPS score (2024): 75/100Graduated 2005 · University of Texas Medical Branch at GalvestonFemaleDrug and device company payments (2025): $60Sonya M. Ehresmann, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2004FemaleRoberto Tostado, MD
✓ Accepts Medicare assignmentGraduated 1992 · University of Michigan Medical SchoolMaleJohn G. Wear, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2022Male
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 San Marino
Other care in San Marino
Hospitals · Nursing homes · Dialysis centers · Home health agencies · Hospices
Nearby cities
- San Gabriel36
- Alhambra72
- South Pasadena13
- Pasadena278
- Temple City10
- Rosemead25
- Sierra Madre5
- Monterey Park49
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).