Michael F. Kos, MD
Radiation Oncology Physician · Spokane Valley, WA
Michael F. Kos, MD is a radiation oncology physician with a practice address in Spokane Valley, Washington, and NPI 1366599631, issued on Jan 5, 2007. Check the license (Washington MD61157599, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Michael F. Kos
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- MD61157599 WA
9893 NV
13640-320 WI
Self-reported in NPPES; status is on the state search - Practice location
- 13424 E Mission Ave # A, Spokane Valley, WA 99216
- Phone
- (509) 321-4980
- Enumerated
- Jan 5, 2007
- Record last updated
- Mar 18, 2026
- Fax
- (530) 576-0364
- Medicare enrollment
- Enrolled (PECOS I20210915001465); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 198 in Washington → Look up another NPI →
Verify Michael F. Kos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD61157599Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average radiation oncology physician in 2024
32 Medicare Part D claims for 22 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Tamsulosin Hcl18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $2,135.93
9 payments; by number, the most common kind was food and beverage; the largest payer was Bioprotect Medical, Inc. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Cancer Care Northwest Centers P SSpokane, WA
- Mayo ClinicEau Claire, WI
- Valley Radiation PLLCLewiston, ID
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael F. Kos among 198 radiation oncology physician records in Washington
Michael F. Kos, MD is one of 198 radiation oncology physician records with a practice address in Washington. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 43% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1993 · median 2006 among the 141 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Washington
There are 198 radiation oncology physician records in Washington.
All 198 in Washington → Every provider in Spokane Valley → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- David Davenport, MDSpokane Valley, WA 992161558353052
- Karie-Lynn Kelly, M.D.. F.R.C.P.C.Spokane Valley, WA 992161417027640
- Wayne Lamoreaux, M.D.Spokane Valley, WA 992161831188036
- Christopher Lee, M.D.Spokane Valley, WA 992161043266810
- Lisa Maestas, D.O.Spokane Valley, WA 992161033114160
- John Shaw, MDSpokane Valley, WA 992161518969021
- Robin Smith, MDSpokane Valley, WA 992161427118686
- Bryan Ager, MDSpokane, WA 992181306231907
Common questions
What is Michael F. Kos, MD's NPI number?
Michael F. Kos, MD's National Provider Identifier (NPI) is 1366599631, issued on Jan 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael F. Kos, MD located?
The NPPES record lists a practice address at 13424 E Mission Ave # A, Spokane Valley, WA, 99216. Phone: (509) 321-4980. Providers update this record themselves, so call before visiting.
How can I verify Michael F. Kos, MD's license?
NPPES lists Washington license number MD61157599, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael F. Kos, MD prescribe under Medicare Part D?
In 2024, Michael F. Kos, MD had 32 Medicare Part D claims for 22 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.