Ann Koss, DO
Diagnostic Radiology Physician · Ludington, MI
Ann Koss, DO is a diagnostic radiology physician with a practice address in Ludington, Michigan, and NPI 1467488759, issued on Jun 25, 2006. Check the license (Michigan AK011095, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Ann Koss
- Credential
- DO
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- AK011095 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1 N Atkinson Dr, Ludington, MI 49431
- Phone
- (231) 845-2255
- Enumerated
- Jun 25, 2006
- Record last updated
- Jul 13, 2026
- Medicaid ID
- 4250478 MI
- Medicare enrollment
- Enrolled (PECOS I20100707000215); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 1990
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 1,584 in Michigan → Look up another NPI →
Also registered at 1 N Atkinson Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Michael Greenslait, DOPain Medicine (Anesthesiology) Physician1982776498
Verify Ann Koss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license AK011095Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 84.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Advanced Radiology Services PCLudington, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ann Koss among 1,584 diagnostic radiology physician records in Michigan
Ann Koss, DO is one of 1,584 diagnostic radiology physician records with a practice address in Michigan. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 50% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1990 · median 2003 among the 1,007 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in Michigan
There are 1,584 diagnostic radiology physician records in Michigan.
All 1,584 in Michigan → Every provider in Ludington → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Darin Gurizzian, DOLudington, MI 494311740219278
- Anthony Barclay, MDHolland, MI 494231619900412
- Gary Bowman, DOHolland, MI 494231427082536
- John Demott, MDHolland, MI 494231780617589
- Susan Ervine, MDHolland, MI 494231992738793
- Paul Field, MDHolland, MI 494231790719805
- Richard Harper, MDHolland, MI 494231679507206
- Frederick Kellaway, MDHolland, MI 494231679593982
Common questions
What is Ann Koss, DO's NPI number?
Ann Koss, DO's National Provider Identifier (NPI) is 1467488759, issued on Jun 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ann Koss, DO located?
The NPPES record lists a practice address at 1 N Atkinson Dr, Ludington, MI, 49431. Phone: (231) 845-2255. Providers update this record themselves, so call before visiting.
How can I verify Ann Koss, DO's license?
NPPES lists Michigan license number AK011095, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Ann Koss, DO's MIPS final score?
The 2023 MIPS final score is 84.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.