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Radiation Oncology in Washington

Data updated monthly · Last refresh August 2026

198 Radiation Oncology providers practice in Washington, including 82 (41%) offering telehealth. The largest concentration is in Seattle. Profiles include Medicare quality scores where available.

198providers
82telehealth
Seattletop city

Radiation Oncology providers by city in Washington

Seattle96 providers
Tacoma10 providers
Kennewick8 providers
Spokane Valley8 providers
Spokane7 providers
Bellingham7 providers
Vancouver7 providers
Lacey6 providers

Highest rated Radiation Oncology providers in Washington

Dr. Kathryn Blau, M.D., M.S.
Seattle, WA · Quality score 97/100 · Telehealth · (206) 598-4121
Dr. George Laramore
Seattle, WA · Quality score 97/100 · (206) 598-4100
Dr. Smith Apisarnthanarax, MD
Seattle, WA · Quality score 97/100 · Telehealth · (206) 306-2804
Dr. Stephanie Schaub, M.D.
Seattle, WA · Quality score 97/100 · Telehealth · (206) 598-4100
Dr. Annemarie Shepherd, MD
Seattle, WA · Quality score 96/100 · Telehealth · (206) 520-5000
Dr. Sara Hardy, M.D.
Seattle, WA · Quality score 96/100 · Telehealth · (065) 205-0002
Dr. Zachary Oaks, MD
Puyallup, WA · Quality score 95/100 · (253) 200-3166
Dr. Juno Choe, M.D., PH.D.
Kennewick, WA · Quality score 94/100 · (509) 783-9894
Dr. Ramesh Rengan, MD. PHD
Seattle, WA · Quality score 93/100 · Telehealth · (206) 306-2804
Dr. Kent Wallner, M.D.
Seattle, WA · Quality score 93/100 · Telehealth · (206) 768-5356
Dr. Jay Liao, MD
Seattle, WA · Quality score 93/100 · Telehealth · (206) 598-4100
Dr. Jason Rockhill
Seattle, WA · Quality score 93/100 · (206) 598-4100
Dr. Upendra Parvathaneni, MBBS
Seattle, WA · Quality score 93/100 · (206) 598-4100
Dr. Annaliisa Mcglinn, MD
Seattle, WA · Quality score 93/100 · (206) 520-5000
Dr. Janice Kim, M.D.
Seattle, WA · Quality score 93/100 · Telehealth · (206) 288-7318
Dr. Jing Zeng, MD
Seattle, WA · Quality score 93/100 · Telehealth · (206) 598-4100
Dr. Yolanda Tseng, MD
Seattle, WA · Quality score 93/100 · Telehealth · (206) 306-2804
Dr. Waylene Swensen, MD
Seattle, WA · Quality score 93/100 · (206) 368-5800
Dr. Lia Halasz, M.D.
Seattle, WA · Quality score 93/100 · Telehealth · (206) 598-4100
Dr. Ralph Ermoian, MD
Seattle, WA · Quality score 93/100 · (206) 598-4100

Common questions

How many Radiation Oncology providers are in Washington?

There are 198 Radiation Oncology providers with active NPI records practicing in Washington, according to federal NPPES data refreshed monthly.

Do Radiation Oncology providers in Washington offer telehealth?

Yes. 82 of the 198 Radiation Oncology providers in Washington (about 41%) report offering telehealth services in CMS data.

Which cities in Washington have the most Radiation Oncology providers?

Seattle (96), Tacoma (10), Kennewick (8) have the highest concentration of Radiation Oncology providers in Washington.

Where does this data come from?

Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files, including MIPS quality scores where available. The directory refreshes monthly.

Related reading on HealthcareDiscovery.AI

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Related

Sources: NPPES (CMS), Doctors and Clinicians national files, MIPS. Updated monthly. This directory is informational and not medical advice. Are you a Radiation Oncology in Washington? Get featured.