Radiation Oncology in Seattle, Washington
Data updated monthly · Last refresh September 2026
97 Radiation Oncology providers practice in Seattle, 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 Seattle
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. Li-ming Fang, MDSeattle, WA · $112 in drug and device payments (2025) ·
(206) 543-0065 Dr. Lisa Ni, MDSeattle, WA · No drug or device payments recorded (2025) · Telehealth ·
(206) 520-5000 Dr. Loise Wairiri, MDSeattle, WA · No drug or device payments recorded (2025) ·
(206) 598-4817 Dr. Mari TokitaSeattle, WA · No drug or device payments recorded (2025) ·
(206) 598-4100 Dr. Mark GroudineSeattle, WA · No drug or device payments recorded (2025) ·
(206) 598-4100 Dr. Michael Cheung, M.D.Seattle, WA · $133 in drug and device payments (2025) ·
(206) 598-4100 Dr. Michael Folkert, M.D., PH.D.Seattle, WA · $196 in drug and device payments (2025) · Telehealth ·
(206) 520-5000 Dr. Michael Hunter, MDSeattle, WA · No drug or device payments recorded (2025) · Telehealth ·
(206) 223-6600 Dr. Muneeb Niazi, DOSeattle, WA · $29 in drug and device payments (2025) · Telehealth ·
(206) 520-5000 Dr. Neil Panjwani, M.D.Seattle, WA · No drug or device payments recorded (2025) · Telehealth ·
(206) 520-5000 Dr. Nina Mayr, MDSeattle, WA · No drug or device payments recorded (2025) ·
(206) 598-4110 Dr. Omar Mian, MD, PHDSeattle, WA · $192 in drug and device payments (2025) · Telehealth ·
(206) 520-5000 Dr. Paul Herstein, M.D.Seattle, WA · No drug or device payments recorded (2025) ·
(206) 326-3490 Dr. Paul Riviere, MDSeattle, WA · No drug or device payments recorded (2025) · Telehealth ·
(206) 520-5000 Dr. Pete Yeh, MDSeattle, WA · $193 in drug and device payments (2025) ·
(206) 598-4100 Dr. Ralph Ermoian, MDSeattle, WA · No drug or device payments recorded (2025) ·
(206) 598-4100 Dr. Ramesh Rengan, MD. PHDSeattle, WA · $4,372 in drug and device payments (2025) · Telehealth ·
(206) 306-2804 Dr. Reith Sarkar, MDSeattle, WA · $260 in drug and device payments (2025) · Telehealth ·
(206) 215-2323 Dr. Richard Hsi, MDSeattle, WA · $1,930 in drug and device payments (2025) · Telehealth ·
(206) 223-6600 Dr. Robert Meier, M.D.Seattle, WA · $128 in drug and device payments (2025) · Telehealth ·
(206) 386-6707 Dr. Saif Aljabab, MBBSSeattle, WA · No drug or device payments recorded (2025) ·
(206) 598-5825 Dr. Sandra Vermeulen, M.D.Seattle, WA · No drug or device payments recorded (2025) ·
(206) 320-7130 Dr. Sara Hardy, M.D.Seattle, WA · No drug or device payments recorded (2025) · Telehealth ·
(065) 205-0002 Dr. Shannon Fogh, M.D.Seattle, WA · No drug or device payments recorded (2025) · Telehealth ·
(206) 520-5000 Dr. Shauna Mcvorran, MDSeattle, WA · $565 in drug and device payments (2025) · Telehealth ·
(206) 520-5000 Dr. Shilpen Patel, MDSeattle, WA · No drug or device payments recorded (2025) ·
(206) 598-4100 Dr. Simon Lo, M.D.Seattle, WA · No drug or device payments recorded (2025) · Telehealth ·
(206) 598-4100 Dr. Smith Apisarnthanarax, MDSeattle, WA · $83 in drug and device payments (2025) · Telehealth ·
(206) 306-2804 Dr. Stephanie Schaub, M.D.Seattle, WA · $127 in drug and device payments (2025) · Telehealth ·
(206) 598-4100 Dr. Steve Eulau, M.D.Seattle, WA · No drug or device payments recorded (2025) ·
(206) 386-2323 Dr. Sudershan Bhatia, MDSeattle, WA · No drug or device payments recorded (2025) ·
(206) 520-5000 Dr. Thomas GriffinSeattle, WA · No drug or device payments recorded (2025) ·
(206) 322-6742 Dr. Tim Mate, M.D.Seattle, WA · No drug or device payments recorded (2025) ·
(206) 386-2198 Dr. Ting Martin Ma, MD, PH.D.Seattle, WA · $889 in drug and device payments (2025) · Telehealth ·
(206) 520-5000 Dr. Todd Barnett, M.D.Seattle, WA · No drug or device payments recorded (2025) ·
(206) 386-2323 Dr. Tracy Sherertz, M.D.Seattle, WA · No drug or device payments recorded (2025) ·
(206) 326-3000 Dr. Tru-khang Dinh, M.D.Seattle, WA · $360 in drug and device payments (2025) ·
(206) 543-3605 Dr. Upendra Parvathaneni, MBBSSeattle, WA · $193 in drug and device payments (2025) ·
(206) 598-4100 Dr. Vivek Mehta, M.D.Seattle, WA · $127 in drug and device payments (2025) · Telehealth ·
(206) 386-2323 Dr. Waylene Swensen, MDSeattle, WA · No drug or device payments recorded (2025) ·
(206) 368-5800 Dr. Winston Vuong, MDSeattle, WA · $63 in drug and device payments (2025) · Telehealth ·
(206) 520-5000 Dr. Wui-jin Koh, MDSeattle, WA · No drug or device payments recorded (2025) ·
(206) 598-4100 Dr. Yilan LiuSeattle, WA · No drug or device payments recorded (2025) ·
(206) 598-4121 Dr. Yolanda Tseng, MDSeattle, WA · No drug or device payments recorded (2025) · Telehealth ·
(206) 306-2804 Common questions
How many Radiation Oncology providers are in Seattle, Washington?There are 97 Radiation Oncology providers with active NPI records practicing in Seattle, according to federal NPPES data refreshed monthly.
How many Radiation Oncology providers in Seattle received drug or device company payments?37 of 97 (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 Seattle Radiation Oncology across Washington
