MICHAEL F KOS MD
NPI 1366599631
Radiology - Radiation Oncology in Spokane Valley, WA
About Michael F Kos Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL F KOS MD (NPI 1366599631) is an individual radiation oncology provider in Spokane Valley, Washington, licensed in Washington (MD61157599) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with St Joseph Regional Medical Center, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Michael F Kos Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show Michael Kos reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Spokane Valley, WA 99216
- Reassigned Medicare billing, Idaho and Washington enrollments
- 17 clinicians in this Medicare group
Spokane Valley, WA 99037
- Reassigned Medicare billing, Washington enrollment
- 4,383 clinicians in this Medicare group
Lewiston, ID 83501
- Reassigned Medicare billing, Idaho enrollment
- 2 clinicians in this Medicare group
Barron, WI 54812
- Reassigned Medicare billing, Wisconsin enrollment
- 1,248 clinicians in this Medicare group
Rochester, MN 55905
- Reassigned Medicare billing, Wisconsin enrollment
- 64 clinicians in this Medicare group
La Crosse, WI 54601
- Reassigned Medicare billing, Wisconsin enrollment
- 1,003 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 19
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Joseph Regional Medical Center
Acute Care Hospitals · Lewiston, IDProv Sacred Hrt Med Ctr & Childs Hosp.
Acute Care Hospitals · Spokane, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 99216 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Michael Kos's NPI number?
The NPI number for Michael Kos is 1366599631. It was assigned to this individual provider in the NPPES registry on January 5, 2007.
Where is Michael Kos located?
Michael Kos practices at 13424 E Mission Ave # A, Spokane Valley, WA 99216. The listed phone number is (509) 321-4980.
What is Michael Kos's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Michael Kos enrolled in Medicare?
Yes. Michael Kos is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Michael Kos's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Kos reassigns Medicare benefits to 6 organizations: Cancer Care Northwest Centers P S (Spokane Valley, WA), Multicare Health System (Spokane Valley, WA), Valley Radiation PLLC (Lewiston, ID), Mayo Clinic Health System-Northwest Wisconsin Region, Inc. (Barron, WI), Mayo Clinic (Rochester, MN) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Kos's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Kos accept?
Health plans from Ambetter Health, PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska, Providence Health Plan and Select Health list Michael Kos as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Michael Kos affiliated with any hospitals?
According to CMS data, Michael Kos is affiliated with St Joseph Regional Medical Center and Prov Sacred Hrt Med Ctr & Childs Hosp..
When was this NPI record last updated?
The NPPES record for Michael Kos was last updated on March 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.