Individual provider Active NPI

Michael F Kos, MD

  • Radiation Oncology Physician
  • Spokane Valley, WA
National Provider Identifier
1366599631
Registry record updated Mar 18, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Radiation Oncology PhysicianTaxonomy code 2085R0001X
License
MD61157599 Issued in WA
Practice address
13424 E Mission Ave # a
Spokane Valley, WA 99216-2759
Phone
(509) 321-4980
Fax
(530) 576-0364
NPI assigned
Jan 5, 2007
Last updated
Mar 18, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 18, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Radiation Oncology Physician 2085R0001X MD61157599 WA Primary
Radiation Oncology Physician 2085R0001X 9893 NV
Radiation Oncology Physician 2085R0001X 13640-320 WI

Addresses

Primary practice location

13424 E Mission Ave # a
Spokane Valley, WA 99216-2759

Mailing address

6506 S Regal CT
Spokane, WA 99223-2117
Phone (775) 560-5776

Other practice location 1

1641 E Polston Ave Ste 102
Post Falls, ID 83854-7852
Phone (208) 273-9186

Other practice location 2

415 6th St
Lewiston, ID 83501-2431
Phone (208) 799-5755

Other practice location 3

504 6th St
Lewiston, ID 83501-2439
Phone (208) 799-5755

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WA, ID, WI3 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 3

Enrollment IDStateProvider typePAC IDDetails
I20210915001465 WA Practitioner - Radiation Oncology 5991782476 Reassigns benefits to 2 organizations
I20230329003372 ID Practitioner - Radiation Oncology 5991782476 Reassigns benefits to 2 organizations
I20250808000980 WI Practitioner - Radiation Oncology 5991782476 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Radiation Oncology
Education
Other, 1993
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Cancer Care Northwest Centers P SGroup PAC ID 4688561939, 40 clinicians
Mayo ClinicGroup PAC ID 6507778255, 4,829 clinicians
Valley Radiation PLLCGroup PAC ID 5193251486, 2 clinicians

Practice addresses (Care Compare)

1204 N Vercler Rd
Spokane, WA 99216-1020
Phone (509) 228-1000

1221 Whipple St
Eau Claire, WI 54703-5270
Phone (715) 838-3311

504 6TH St
Lewiston, ID 83501-2439
Phone (208) 799-5600

700 W Ave S
La Crosse, WI 54601-8806
Phone (608) 785-0940

800 W Ave S
La Crosse, WI 54601-8806
Phone (608) 785-0940

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
9893NVMDRadiation Oncology Physician
13640-320WIMDRadiation Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Mayo Clinic CurrentSince Jul 30, 2025 Accepting new patients
Multicare Health System CurrentSince May 9, 2022 Accepting new patients
Cancer Care Northwest Centers P S CurrentSince Apr 1, 2023 Accepting new patients
Mayo Clinic Health System-Northwest Wisconsin Region, Inc. CurrentSince Jul 30, 2025 Accepting new patients
Mayo Clinic Health System-Northwest Wisconsin Region, Inc. Current Accepting new patients
Multicare Health System CurrentSince May 9, 2022 Accepting new patients
Multicare Health System Current Accepting new patients
Mayo Clinic Health System-Northwest Wisconsin Region, Inc. CurrentSince Jul 30, 2025 Accepting new patients
Mayo Clinic Health System-Southwest Wisconsin Region, Inc. CurrentSince Jul 30, 2025 Accepting new patients
Cancer Care Northwest Centers P S Radiation Oncology CurrentSince Apr 1, 2023 Accepting new patients
Mayo Clinic CurrentSince Jul 30, 2025 Accepting new patients
Mayo Clinic Health System-Southwest Wisconsin Region, Inc. CurrentSince Jul 30, 2025 Accepting new patients
American Oncology Partners PA Radiation Oncology PastSince Sep 1, 2021 Accepting new patients

Locations

700 W Ironwood Dr
Ste 130
Coeur D Alene, ID 83814
Phone (208) 625-4700

415 6th St
Lewiston, ID 83501
Phone (208) 750-7445

504 6th St
Lewiston, ID 83501
Phone (208) 799-5000

1440 E Mullan Ave
Post Falls, ID 83854
Phone (208) 619-4100

4700 Point Fosdick Dr
Ste 104
Gig Harbor, WA 98335
Phone (253) 459-7590

222 State Ave N
Kent, WA 98030
Phone (253) 372-7680

101 W 8th Ave
#L3
Spokane, WA 99204

601 S Sherman St
Spokane, WA 99202
Phone (509) 434-1082

605 E Holland Ave
Ste 100
Spokane, WA 99218
Phone (509) 228-1400

1204 N Vercler Rd
Spokane Valley, WA 99216
Phone (509) 228-1041

315 S K St
Tacoma, WA 98405
Phone (253) 403-1291

1221 Whipple St
Eau Claire, WI 54703
Phone (715) 831-0100

733 W Clairemont Ave
Eau Claire, WI 54701
Phone (715) 838-3806

700 West Ave S
La Crosse, WI 54601
Phone (608) 791-4156

800 E Blackhawk Ave
Prairie du Chien, WI 53821
Phone (608) 326-0808

Interoperability endpoints

  • Direct secure messaging: mkos2548297@ehrdirect.mayoclinicmsg.org

Organizations & group practices 14

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

View all 14

Hospital & facility affiliations 3

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1167955200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773792000000",
    "number": "1366599631",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6506 S REGAL CT",
            "city": "SPOKANE",
            "state": "WA",
            "postal_code": "992232117",
            "telephone_number": "775-560-5776",
            "fax_number": "530-576-0364"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "13424 E MISSION AVE # A",
            "city": "SPOKANE VALLEY",
            "state": "WA",
            "postal_code": "992162759",
            "telephone_number": "509-321-4980",
            "fax_number": "530-576-0364"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1641 E Polston Ave Ste 102",
            "address_purpose": "LOCATION",
            "city": "Post Falls",
            "state": "ID",
            "postal_code": "838547852",
            "country_code": "US",
            "telephone_number": "208-273-9186",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "415 6th St",
            "address_purpose": "LOCATION",
            "city": "Lewiston",
            "state": "ID",
            "postal_code": "835012431",
            "country_code": "US",
            "telephone_number": "208-799-5755",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "504 6th St",
            "address_purpose": "LOCATION",
            "city": "Lewiston",
            "state": "ID",
            "postal_code": "835012439",
            "country_code": "US",
            "telephone_number": "208-799-5755",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KOS",
        "first_name": "MICHAEL",
        "middle_name": "F",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-01-05",
        "last_updated": "2026-03-18",
        "certification_date": "2026-03-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "WA",
            "license": "MD61157599",
            "primary": true
        },
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "NV",
            "license": "9893",
            "primary": false
        },
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "WI",
            "license": "13640-320",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Spokane Valley, WA

Sources for this page

Verify at the official NPI Registry.