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Radiation Oncology in Santa Clara, California

Data updated monthly · Last refresh September 2026

9 Radiation Oncology providers practice in Santa Clara. Listings are drawn from federal public records and are not endorsements.

Radiation Oncology providers in Santa Clara

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. Anita Lee, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-8000
Dr. Benjamin Fisch, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 236-6400
Dr. Brian Missett, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 236-6400
Dr. Jagdeep Raince, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-8000
Dr. Joseph Hastings, MD, MPH
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-8000
Dr. Radhika Sreeraman Kumar, M.D.
Santa Clara, CA · $52 in drug and device payments (2025) · (408) 851-8000
Dr. Samantha Seaward, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 236-6400
Dr. Subir Nag, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 236-6400
Dr. Wilson Mai, MD, PHD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000

Common questions

How many Radiation Oncology providers are in Santa Clara, California?

There are 9 Radiation Oncology providers with active NPI records practicing in Santa Clara, 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 Santa Clara Radiation 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.