Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Michael F Kos, MD

Individual provider Radiation Oncology Physician · NPI 1366599631

Michael F Kos, MD practises Radiation Oncology in Spokane Valley, Washington. Qualified in 1993, 33 years ago. Practices with Cancer Care Northwest Centers P S, a 40-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Nevada, Washington and Wisconsin.

Years since qualifying
33
Licensed in
NV, WA, WI
In the registry since
2007
Specialties on file
3
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

13424 E Mission Ave # A
Spokane Valley, WA 99216-2759
Phone: (509) 321-4980
Fax: (530) 576-0364
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 504 6th St, Lewiston, ID 83501-2439 — (208) 799-5755
  • 415 6th St, Lewiston, ID 83501-2431 — (208) 799-5755
  • 1641 E Polston Ave Ste 102, Post Falls, ID 83854-7852 — (208) 273-9186

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence MD61157599 (WA)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence 9893 (NV)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence 13640-320 (WI)

Record details

NPI number1366599631
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 5, 2007
Last updated in NPPESMarch 18, 2026
Certification dateMarch 18, 2026

Medicare enrollment

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

Medicare specialtyRADIATION ONCOLOGY
Medical schoolOTHER
Graduated 1993 (33 years in practice)
Group practice Cancer Care Northwest Centers P S — 40 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients420
Services billed 4,272 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $152 6 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Cancer Care Northwest Centers P S

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 40 clinicians in the practice; 12 are shown here.

Other providers in Spokane Valley