Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Hiroki Mitsuyama, MD

Individual provider Radiation Oncology Physician · NPI 1164488086

Dr. Hiroki Mitsuyama, MD is a Radiation Oncology in Seattle, Washington. Graduated from University of North Carolina at Chapel Hill School of Medicine in 2001, 25 years ago. Practices with Virginia Mason Medical Center, a 867-clinician group and accepts Medicare assignment. Licensed in Arizona and Washington.

Years since qualifying
25
Trained at
University of North Carolina at Chapel Hill School of Medicine
Licensed in
AZ, WA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1100 9th Ave
Seattle, WA 98101-2756
Phone: (206) 223-6801
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence MD60178819 (WA)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence 35386 (AZ)

Record details

NPI number1164488086
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 21, 2006
Last updated in NPPESApril 23, 2013
Mailing address1100 9th Ave, Ms:M4-Pfs, Seattle, WA 98101-2756

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyRADIATION ONCOLOGY
Medical schoolUNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL SCHOOL OF MEDICINE
Graduated 2001 (25 years in practice)
Group practice Virginia Mason Medical Center — 867 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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