Radiation Oncology in Torrance, California
Data updated monthly · Last refresh September 2026
7 Radiation Oncology providers practice in Torrance. Listings are drawn from federal public records and are not endorsements.
Radiation Oncology providers in Torrance
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. Alessandra Amadeo, MDTorrance, CA · No drug or device payments recorded (2025) ·
(310) 792-6539 Dr. Andrew Schumacher, M.D.Torrance, CA · $40 in drug and device payments (2025) · Telehealth ·
(310) 517-4750 Dr. Arthur Zimmerman, M.D.Torrance, CA · No drug or device payments recorded (2025) ·
(310) 222-2804 Dr. Garth GreenTorrance, CA · No drug or device payments recorded (2025) · Telehealth ·
(310) 750-1715 Dr. Rebecca Philipson, M.D.Torrance, CA · $40 in drug and device payments (2025) · Telehealth ·
(310) 517-4750 Dr. Samuel Zhang, MDTorrance, CA · $20 in drug and device payments (2025) · Telehealth ·
(310) 517-4750 Dr. Thomas Simko, MDTorrance, CA · No drug or device payments recorded (2025) ·
(909) 263-0321 Common questions
How many Radiation Oncology providers are in Torrance, California?There are 7 Radiation Oncology providers with active NPI records practicing in Torrance, 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 Torrance Radiation Oncology across California
