NPI 1053399568

Peter K Sien, MD

Practitioner Radiation Oncology Physician Kennewick, WA

Practice location

Address: 7379 W Deschutes Ave STE 100, Kennewick, WA 99336-7900
Phone: (509) 987-1800
Fax: (509) 987-1808
Mailing address: 163 Valleyview Way, South San Francisco, CA 94080-5553

Registered specialties (3)

Radiation Oncology Physician Primary

Allopathic & Osteopathic Physicians Taxonomy 2085R0001X Licence MD60698178 (WA)

Other Radiology providers in Washington →

Radiation Oncology Physician

Allopathic & Osteopathic Physicians Taxonomy 2085R0001X Licence 18502 (AZ)

Radiation Oncology Physician

Allopathic & Osteopathic Physicians Taxonomy 2085R0001X Licence G32267 (CA)

Registry record

NPI: 1053399568
Entity type: Individual
Sex (as registered): Male
NPI issued: 4 Jan 2006
Record last updated: 5 Jan 2026

Reproduced from NPPES, the federal provider registry. The date above is when the provider last updated their own entry, not when we fetched it - a record can be years old and still current in the registry.