Ashley Koski, FNP-C
Family Nurse Practitioner · Ironwood, MI
Ashley Koski, FNP-C is a family nurse practitioner with a practice address in Ironwood, Michigan, and NPI 1205590759, issued on Oct 29, 2021. Check the license with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ashley Koski
- Credential
- FNP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 11470-33 WI
Self-reported in NPPES; status is on the state search - Practice location
- N10565 Grandview LN, Ironwood, MI 49938
- Phone
- (906) 932-1500
- Enumerated
- Oct 29, 2021
- Record last updated
- Feb 26, 2025
- Medicare enrollment
- Enrolled (PECOS I20231115002972); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 5,356 in Michigan → Look up another NPI →
Also registered at N10565 Grandview LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Louis James, MDUrology Physician1265414072
- Kathleen Kirchner, NPFamily Nurse Practitioner1558343947
- Tina Marshall, NPNurse Practitioner1578897666
- Gayle Maslakow, FNP-C, CDEFamily Nurse Practitioner1275031015
Verify Ashley Koski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average family nurse practitioner in 2024
163 Medicare Part D claims for 118 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 113 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen78 claims
- Oxycodone-Acetaminophen24 claims
- Cephalexin13 claims
- Cyclobenzaprine Hcl12 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.
Bills Medicare through one group practice
- Aspirus Ironwood Hospital And Clinics IncIronwood, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ashley Koski among 5,356 family nurse practitioner records in Michigan
Ashley Koski, FNP-C is one of 5,356 family nurse practitioner records with a practice address in Michigan. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 62% of them.
- NPI issued2021 · 62% of these records are older, 29% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2021 · median 2019 among the 3,254 with a school on file
- Record last updated2025 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 family nurse practitioner records list a practice address in Ironwood
They are 7 of the 103 NPPES records with a practice address in Ironwood, and 5,356 family nurse practitioner records in Michigan.
All 5,356 in Michigan → Every provider in Ironwood → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Kathleen Kirchner, NPIronwood, MI 499381558343947
- Gayle Maslakow, FNP-C, CDEIronwood, MI 499381275031015
- Heather Nyman, NP-CIronwood, MI 499381588925101
- Brianna Orr, FNP-CIronwood, MI 499381881367167
- Lisa Polkky, NPIronwood, MI 499381619385366
- Nicole Sederholm, FNP-CIronwood, MI 499381942663877
- Beki AstiHoughton, MI 499311013240886
- Jenny Bausano, FNPLake Linden, MI 499451003475344
Common questions
What is Ashley Koski, FNP-C's NPI number?
Ashley Koski, FNP-C's National Provider Identifier (NPI) is 1205590759, issued on Oct 29, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Ashley Koski, FNP-C located?
The NPPES record lists a practice address at N10565 Grandview LN, Ironwood, MI, 49938. Phone: (906) 932-1500. Providers update this record themselves, so call before visiting.
How can I verify Ashley Koski, FNP-C's license?
Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Ashley Koski, FNP-C prescribe under Medicare Part D?
In 2024, Ashley Koski, FNP-C had 163 Medicare Part D claims for 118 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.