Radiation Oncology in Tacoma, Washington
Data updated monthly · Last refresh September 2026
10 Radiation Oncology providers practice in Tacoma. Listings are drawn from federal public records and are not endorsements.
Radiation Oncology providers in Tacoma
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. Andrew Graff, DOTacoma, WA · No drug or device payments recorded (2025) ·
(253) 968-2252 Dr. Christopher Premo, MDTacoma, WA · No drug or device payments recorded (2025) · Telehealth ·
(707) 631-0594 Dr. Delnora Erickson, M.D.Tacoma, WA · No drug or device payments recorded (2025) ·
(253) 968-2252 Dr. Herbert Wang, MDTacoma, WA · $363 in drug and device payments (2025) · Telehealth ·
(253) 272-1077 Dr. Joseph Tsai, MD, PHDTacoma, WA · No drug or device payments recorded (2025) · Telehealth ·
(253) 403-4994 Dr. Michael Soronen, MDTacoma, WA · No drug or device payments recorded (2025) ·
(253) 627-6172 Dr. Susan Guo, MDTacoma, WA · $148 in drug and device payments (2025) · Telehealth ·
(253) 403-4994 Dr. Wendy Gao, MDTacoma, WA · $261 in drug and device payments (2025) · Telehealth ·
(253) 627-6172 Common questions
How many Radiation Oncology providers are in Tacoma, Washington?There are 10 Radiation Oncology providers with active NPI records practicing in Tacoma, 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 Tacoma Radiation Oncology across Washington