HealthcareDiscovery.AI / Doctors / California / South San Francisco / Medical Oncology

Medical Oncology in South San Francisco, California

Data updated monthly · Last refresh September 2026

5 Medical Oncology providers practice in South San Francisco. Listings are drawn from federal public records and are not endorsements.

Medical Oncology 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. Elwyn Loh, M.D.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 244-2868
Dr. Jakob Dupont, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 255-9183
Dr. Mark Benyunes, M.D.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 225-1628
Dr. Melissa Brammer, M.D., M.P.H.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 467-7700
Dr. Slawomir Wojtowicz-praga, M.D.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 467-9092

Common questions

How many Medical Oncology providers are in South San Francisco, California?

There are 5 Medical Oncology providers with active NPI records practicing in South San Francisco, according to federal NPPES data refreshed monthly.

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 Medical Oncology 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.