HealthcareDiscovery.AI / Doctors / California / San Marino / Internal Medicine

Internal Medicine in San Marino, California

Data updated monthly · Last refresh September 2026

11 Internal Medicine providers practice in San Marino. Listings are drawn from federal public records and are not endorsements.

Internal Medicine providers in San Marino

Listed alphabetically. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Chien Fang, MD
San Marino, CA · No drug or device payments recorded (2025) · Telehealth · (626) 441-4231
Dr. Derek Cheung, MD
San Marino, CA · No drug or device payments recorded (2025) · (626) 441-4231
Dr. Elisa Alvarado, M.D.
San Marino, CA · $60 in drug and device payments (2025) · (626) 584-0026
Dr. John Wear
San Marino, CA · No drug or device payments recorded (2025) · Telehealth · (626) 441-4231
Dr. Mu-chien Chiang, D.O.
San Marino, CA · $639 in drug and device payments (2025) · Telehealth · (626) 441-4231
Dr. Richard Williams, MD
San Marino, CA · No drug or device payments recorded (2025) · (626) 441-4231
Dr. Sabrina Hong, MD
San Marino, CA · No drug or device payments recorded (2025) · (626) 354-4058
Dr. Samuel Zia, M.D.
San Marino, CA · No drug or device payments recorded (2025) · (626) 282-5055
Dr. Sonya Ehresmann, M.D.
San Marino, CA · No drug or device payments recorded (2025) · Telehealth · (626) 441-4231
Dr. Thomas Maxwell, M.D.
San Marino, CA · $42 in drug and device payments (2025) · (626) 449-2455
Dr. Ya-gin Hanna Huang, MD
San Marino, CA · No drug or device payments recorded (2025) · Telehealth · (626) 441-4231

Conditions Internal Medicine providers in San Marino, California commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Internal Medicine providers are in San Marino, California?

There are 11 Internal Medicine providers with active NPI records practicing in San Marino, according to federal NPPES data refreshed monthly.

What conditions do Internal Medicine providers in San Marino treat?

Internal Medicine providers in San Marino commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.

Where does this data come from?

Provider records come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

All specialties in San Marino Internal Medicine across California

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory.