HealthcareDiscovery.AI / Doctors / California / South San Francisco / Internal Medicine

Internal Medicine in South San Francisco, California

Data updated monthly · Last refresh September 2026

63 Internal Medicine providers practice in South San Francisco, and 11% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Internal Medicine providers in South San Francisco

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. Adeline Segundo, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Alaap Mehta, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Alan Le, MD
South San Francisco, CA · $103 in drug and device payments (2025) · (650) 742-2000
Dr. Andrew Cheng, MD
South San Francisco, CA · $55,070,157 in drug and device payments (2025) · (650) 487-6486
Dr. Aruna Chinnakotla, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Bambi Menes, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Barnabas Yik, MD
South San Francisco, CA · $125 in drug and device payments (2025) · (650) 742-2000
Dr. Caroline Tsen, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Charles Barr, M.D.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 225-4867
Dr. Christopher Fowler, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. David Kim, MD
South San Francisco, CA · $17 in drug and device payments (2025) · (650) 742-2000
Dr. David Martin, M.D.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 873-1115
Dr. David Seftel, M.D.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 240-3105
Dr. Dirk Thye, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (415) 533-3236
Dr. Edward Fang, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Eva Liu, MD
South San Francisco, CA · $93 in drug and device payments (2025) · Telehealth · (650) 742-2000
Dr. Evie Kalmar, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 826-2945
Dr. Faith Wells, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 826-2945
Dr. Gerald Saliman, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Grace Kajiwara, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Grace Lay, DO
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Hulya Kaymaz, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Ikuko Ogihara, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Issa Khouri, MD
South San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (650) 742-2000
Dr. Jae Park, MD
South San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (650) 742-2000
Dr. James Gibboney, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. James Peros, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Jan Sy
South San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (650) 742-2000
Dr. Jeany Tay, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Jennifer Jones, M.D., PH.D.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2304
Dr. Jennifer Larsen, M.D.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Jennifer Shieh, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (408) 728-3101
Dr. Joel Manosalva, M.D.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 588-5145
Dr. Karl Chan, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Kelly Yeh, M.D.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-3144
Dr. Kenneth Lee, MD
South San Francisco, CA · $14 in drug and device payments (2025) · (650) 742-2000
Dr. Keon Pearson, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (844) 838-3322
Dr. Laura Yang, M.D.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Liya Dorfman, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Matthew Mcclure, M.D,
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 246-7389
Dr. Michelle Caughey, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Nan Ye Lei, DO
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Natalia Bruchanski-gallagher, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Nathan Billett, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Neelima Mohan, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Nigar Seven, M.D
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Patrick Twomey, M.D.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 225-2580
Dr. Prasanna Durairaj, D.O
South San Francisco, CA · No drug or device payments recorded (2025) · Telehealth · (650) 742-2100
Dr. Priti Dahya, M.D.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Robert Marshall, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000

Conditions Internal Medicine providers in South San Francisco, 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 South San Francisco, California?

There are 63 Internal Medicine providers with active NPI records practicing in South San Francisco, according to federal NPPES data refreshed monthly.

How many Internal Medicine providers in South San Francisco received drug or device company payments?

7 of 63 (11%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Internal Medicine providers in South San Francisco treat?

Internal Medicine providers in South San Francisco 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 South San Francisco 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.