Peter K Sien, MD
Peter K Sien, MD is a Radiation Oncology in Kennewick, Washington. Graduated from Medical College of Wisconsin in 1975, 51 years ago. Practices with Kingman Healthcare Inc, a 180-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Arizona, California and Washington.
- Years since qualifying
- 51
- Trained at
- Medical College of Wisconsin
- Licensed in
- AZ, CA, WA
- In the registry since
- 2006
- Specialties on file
- 3
What do these letters mean?
- MD — Doctor of Medicine
- A physician who completed allopathic medical school.
Practice location Address checks out
7379 W Deschutes Ave Ste 100Kennewick, WA 99336-7900
Phone: (509) 987-1800
Fax: (509) 987-1808
Show map & directions
Directions in Google Maps · Apple Maps · OpenStreetMap
Pin is approximate — placed at the ZIP-code centre, not the exact door.
Additional practice locations (3)
- 625 N 6th St, Phoenix, AZ 85004-2155 — (602) 406-8222
- 1316 Nelson Ave, Modesto, CA 95350-5341 — (209) 575-5870
- 844 N 5th Ave, Sequim, WA 98382-3045 — (360) 683-9895
Specialties & licences
| Radiation Oncology Physician (primary) | Taxonomy 2085R0001X · Licence MD60698178 (WA) |
|---|---|
| Radiation Oncology Physician | Taxonomy 2085R0001X · Licence 18502 (AZ) |
| Radiation Oncology Physician | Taxonomy 2085R0001X · Licence G32267 (CA) |
Record details
| NPI number | 1053399568 |
|---|---|
| Entity type | Individual (Type 1) |
| Gender | Male |
| Credentials | MD |
| Sole proprietor | No |
| NPI enumerated | January 4, 2006 |
| Last updated in NPPES | January 5, 2026 |
| Certification date | January 5, 2026 |
| Mailing address | 163 Valleyview Way, South San Francisco, CA 94080-5553 |
Medicare enrollment
| Medicare specialty | RADIATION ONCOLOGY |
|---|---|
| Medical school | MEDICAL COLLEGE OF WISCONSIN |
| Graduated | 1975 (51 years in practice) |
| Group practice | Kingman Healthcare Inc — 180 clinicians |
| Accepts Medicare assignment | Yes — accepts the Medicare-approved amount |
| Practice locations | 2 on file with Medicare |
Other providers in Kennewick
-
Northwest Cancer Clinic, LLC
7379 W Deschutes Ave, Kennewick, WA 99336-7900 · (509) 987-1800
-
Oncology Group PLLC
7350 W Deschutes Bldg A, Kennewick, WA 99336 · (509) 737-3371
-
Mrs. Sheila D Rege, MD
7379 W Deschutes Ave Ste 100, Kennewick, WA 99336-7900 · (509) 987-1800
-
Dr. Andrew Thomas Roehrig, MD
7350 W Deschutes Ave Ste A, Kennewick, WA 99336-7802 · (509) 737-3371
-
The Tri-Cities Cancer Center
7350 W Deschutes Ave Bldg A, Kennewick, WA 99336-7802 · (509) 783-9894
-
Dr. Sherry Zhao, MD
7350 W Deschutes Ave Ste A, Kennewick, WA 99336 · (509) 737-3371