Ann Koss, DO

Primary specialty

Diagnostic Radiology PhysicianTaxonomy code 2085R0202X

License

AK011095 Issued in MI

Practice address

1 N Atkinson Dr
Ludington, MI 49431-1906

Phone

(231) 845-2255

NPI assigned

Jun 25, 2006

Last updated

Jul 13, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MI

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 1

Specialty

Diagnostic Radiology

Education

At Still University of Health Sciences, College of Osteo Med, Kirksville, 1990

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Advanced Radiology Services PCGroup PAC ID 4284546516, 252 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Corewell Health Ludington Hospital Hospital, Ludington, MI, CCN 230110
• Spectrum Health Hospital, Grand Rapids, MI, CCN 230038
• Spectrum Health United Hospital Hospital, Greenville, MI, CCN 230035
• Corewell Health Pennock Hospital Hospital, Hastings, MI, CCN 231339
• Corewell Health Big Rapids Hospital Hospital, Big Rapids, MI, CCN 230093

Merit-based Incentive Payment System (MIPS)

Final score

90.33 of 100Reported as group

Quality

91.31

Improvement activities

40

Cost

79.05

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

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.

• Advanced Radiology Services PC

  • Diagnostic Radiology Physician
  • Grand Rapids, MI
  • NPI 1740283324
  Medicare reassignment Care Compare group NPD
• Pere Marquette Medical Imaging PC

  • Diagnostic Radiology Physician
  • Ludington, MI
  • NPI 1588600399
  Authorized official Same address or phone
• United Eagle Imaging, LLC

  dba Clarkston MRI

  • Diagnostic Radiology Physician
  • Clarkston, MI
  • NPI 1013930460
  NPD (past)

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

• Mecosta County Medical Center

  dba Corewell Health Big Rapids Hospital

  • General Acute Care Hospital
  • Big Rapids, MI
  • NPI 1316945991
  Care Compare affiliation
• Memorial Medical Center of West Michigan

  dba Corewell Health Ludington Hospital

  • General Acute Care Hospital
  • Ludington, MI
  • NPI 1972589489
  Care Compare affiliation
• Pennock Hospital

  dba Corewell Health Pennock Hospital

  • Critical Access Hospital
  • Hastings, MI
  • NPI 1932695525
  Care Compare affiliation
• Spectrum Health Hospitals

  dba Corewell Health Grand Rapids Hospital

  • General Acute Care Hospital
  • Grand Rapids, MI
  • NPI 1922090554
  Care Compare affiliation
• Spectrum Health United

  dba Corewell Health Greenville Hospital

  • General Acute Care Hospital
  • Greenville, MI
  • NPI 1457304495
  Care Compare affiliation

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

{
    "created_epoch": "1151193600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1467488759",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3264 N EVERGREEN DR NE",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495259746",
            "telephone_number": "616-353-7339",
            "fax_number": "616-361-5828"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 N ATKINSON DR",
            "city": "LUDINGTON",
            "state": "MI",
            "postal_code": "494311906",
            "telephone_number": "231-845-2255"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KOSS",
        "first_name": "ANN",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-06-25",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "MI",
            "license": "AK011095",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Zane M Knoer, DO
• Susan Knoll, RPH
• William Maurice Kokx, DO
• Starr Koon
• Tyler Koops
• Bryan Anthony Kovas, M.D.
• Teresa Ellen Kovas, M.D.
• Sceone Maren Kraai, PA-C
• Leah Erin Kruk, DNP FNP
• Carol Ann Kubanek-Erdman, R.N.

• Diagnostic Radiology Physician in Ludington, MI
• Providers in Ludington, MI by specialty
• Diagnostic Radiology Physician in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.