HealthcareDiscovery.AI / Doctors / Oregon / Portland / Radiation Oncology

Radiation Oncology in Portland, Oregon

Data updated monthly · Last refresh September 2026

53 Radiation Oncology providers practice in Portland, and 38% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Radiation Oncology providers in Portland

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. Steven Seung, MD, PHD
Portland, OR · $1,767 in drug and device payments (2025) · Telehealth · (503) 215-6029
Dr. Thomas Johnson, M.D.
Portland, OR · No drug or device payments recorded (2025) · (503) 280-2931
Dr. Thomas Wynne, M.D.
Portland, OR · $16 in drug and device payments (2025) · (503) 280-2931

Common questions

How many Radiation Oncology providers are in Portland, Oregon?

There are 53 Radiation Oncology providers with active NPI records practicing in Portland, according to federal NPPES data refreshed monthly.

How many Radiation Oncology providers in Portland received drug or device company payments?

20 of 53 (38%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

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 Portland Radiation Oncology across Oregon

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.