Gregory Alan Flermoen, M.D.

Primary specialty

Surgery PhysicianTaxonomy code 208600000X

License

4301096517 Issued in MI

Practice address

1234 Napier Ave
Saint Joseph, MI 49085-2112

Phone

(269) 429-0900

NPI assigned

Jul 6, 2010

Sex

Male

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

General Surgery

Education

University of Illinois College of Med (CHI/Peor/Rock/CHM-Urb), 2010

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Memorial HospitalGroup PAC ID 8527976497, 210 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Memorial Healthcare Hospital, Owosso, MI, CCN 230121
• Lakeland Hospital, St Joseph Hospital, St Joseph, MI, CCN 230021

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: g.flermoen@memorialhealthcare.midirect.net
• Direct secure messaging: gregoryflermoen@memh.allscriptsdirect.net

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

• Memorial Hospital

  • General Practice Physician
  • Owosso, MI
  • NPI 1235160532

  Surgery

  Medicare reassignment Care Compare group NPD
• Sparrow Carson Hospital

  • Internal Medicine Physician
  • Carson City, MI
  • NPI 1598490542
  Medicare reassignment NPD
• Sparrow Clinton Hospital

  • Multi-Specialty Clinic/Center
  • Saint Johns, MI
  • NPI 1306893078
  Medicare reassignment NPD
• Memorial Hospital

  • General Practice Physician
  • Owosso, MI
  • NPI 1316008006

  Surgery

  NPD
• Memorial Hospital

  • Anesthesiology Physician
  • Owosso, MI
  • NPI 1659527737
  NPD
• Sparrow Carson Hospital

  • Cardiovascular Disease Physician
  • Carson City, MI
  • NPI 1063245694
  NPD
• Sparrow Carson Hospital

  • Surgery Physician
  • Carson City, MI
  • NPI 1942588736
  NPD
• Memorial Hospital

  • General Acute Care Hospital
  • Owosso, MI
  • NPI 1063414233
  NPD (past)
• Memorial Hospital

  • Home Health Agency
  • Owosso, MI
  • NPI 1952498610
  NPD (past)

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

• Lakeland Hospitals at Niles and St Joseph, Inc

  • General Acute Care Hospital
  • Saint Joseph, MI
  • NPI 1134220031
  Care Compare affiliation
• Memorial Hospital

  • General Acute Care Hospital
  • Owosso, MI
  • NPI 1063414233
  Care Compare affiliation

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

{
    "created_epoch": "1278374400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1774828800000",
    "number": "1508178682",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1234 NAPIER AVE",
            "city": "SAINT JOSEPH",
            "state": "MI",
            "postal_code": "490852112"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1234 NAPIER AVE",
            "city": "SAINT JOSEPH",
            "state": "MI",
            "postal_code": "490852112",
            "telephone_number": "269-429-0900"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FLERMOEN",
        "first_name": "GREGORY",
        "middle_name": "ALAN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2010-07-06",
        "last_updated": "2026-03-30",
        "certification_date": "2026-03-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "MI",
            "license": "4301096517",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Katie Elaine Fitton, DO
• Jeffrey J Fitzer, MD.
• Emily Schlitz Fix, MS, ATC, LAT
• Kighle Flamm
• Raymond James Fleming
• Robert L Flood, O.D.
• Felicia D. Flowers, PROFESSIONAL COUNSEL
• Dan Lee Fortenbacher, O.D.
• Jenifer Joye Fox, MA, CCC-SLP
• Nicholas McHenry Frazier, D.O.

• Surgery Physician in Saint Joseph, MI
• Providers in Saint Joseph, MI by specialty
• Surgery Physician in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 30, 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.