NPIMap

Individual provider Active NPI

Gregory A Holzhei, D.O.

  • Family Medicine Physician
  • Saint Johns, MI
National Provider Identifier
1073585444
Registry record updated Jan 9, 2012
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
5101013906 Issued in MI
Practice address
901 S Oakland St
Suite 204
Saint Johns, MI 48879-2200
Phone
(989) 224-2338
Fax
(989) 224-2065
NPI assigned
Feb 1, 2006
Last updated
Jan 9, 2012By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 9, 2012

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X 5101013906 MI Primary

Addresses

Primary practice location

901 S Oakland St
Suite 204
Saint Johns, MI 48879-2200

Mailing address

901 S Oakland St
Suite 204
Saint Johns, MI 48879-2200
Phone (989) 224-2338

Other identifiers 6

IdentifierTypeStateIssuer
01-01374OtherMIPHP
7755233OtherMIAETNA/PPOM
080192531OtherMIRAILROAD MEDICARE
4474532MedicaidMI
700A910020OtherMIBCBS
081900134OtherMIBCN

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MI
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20120209000608 MI Practitioner - Family Practice 6800062860 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
Other, 1998
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Sparrow Clinton HospitalGroup PAC ID 5395658850, shared by 3 NPIs, 23 clinicians

Practice addresses (Care Compare)

901 S Oakland St
University of Michigan Health Sparr
Saint Johns, MI 48879-2255
Phone (989) 224-2338

Hospital & facility affiliations

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Sparrow Clinton Hospital Current Accepting new patients
Sparrow Clinton Hospital CurrentSince Apr 1, 2003 Accepting new patients

Locations

8175 Reliable Pkwy
Chicago, IL 60686

901 S Oakland St
Saint Johns, MI 48879
Phone (517) 227-2338

901 S Oakland St
Ste 201
Saint Johns, MI 48879
Phone (989) 224-2338

901 S Oakland St
Ste 204
Saint Johns, MI 48879
Phone (989) 224-2338

Interoperability endpoints

  • Direct secure messaging: gholzhei3113@sparrowdirecthie.org

Ownership & related parties

All facility ownership & control disclosures 16

Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.

FacilityTypeRoleSince
University of Michigan Health-Sparrow Specialty HospitalLansing, MI, CCN 232037 Hospital Corporate Officer Jul 1, 2025
University of Michigan Health-Sparrow EatonCharlotte, MI, CCN 231327 Hospital Corporate Officer Jul 1, 2025
University of Michigan Health - WestWyoming, MI, CCN 230236 Hospital Corporate Director Jul 1, 2025
University of Michigan Health-Sparrow LansingLansing, MI, CCN 230230 Hospital Corporate Officer Jul 1, 2025
University of Michigan Health-Sparrow IoniaIonia, MI, CCN 231331 Hospital Corporate Officer Jul 1, 2025
University of Michigan Health-SparrowLansing, MI, CCN 23T230 Hospital Corporate Officer Jul 1, 2025
University of Michigan Health-Sparrow St. LawrenceLansing, MI, CCN 23S230 Hospital Corporate Officer Jul 1, 2025
University of Michigan Health-SparrowCarson City, MI, CCN 230208 Hospital Corporate Officer Jul 1, 2025
University of Michigan Health-SparrowSaint Johns, MI, CCN 23Z326 Hospital Corporate Officer Jul 1, 2025
University of Michigan Health-Sparrow Carson Primary CareCarson City, MI, CCN 233994 Rural health clinic Corporate Officer Jul 1, 2025
University of Michigan Health-Sparrow IoniaIonia, MI, CCN 238550 Rural health clinic Corporate Officer Jul 1, 2025
University of Michigan Health-SparrowGreenville, MI, CCN 233996 Rural health clinic Corporate Officer Jul 1, 2025
University of Michigan Health-Sparrow Ithaca Primary CareIthaca, MI, CCN 238517 Rural health clinic Corporate Officer Jul 1, 2025
University of Michigan Health-Sparrow Portland Primary CarePortland, MI, CCN 238631 Rural health clinic Corporate Officer Jul 1, 2025
University of Michigan Health-Sparrow Saranac Primary CareSaranac, MI, CCN 238698 Rural health clinic Corporate Officer Jul 1, 2025
University of Michigan Health-Sparrow Carson OB/GYNCarson City, MI, CCN 238706 Rural health clinic Corporate Officer Jul 1, 2025

Owned or controlled facilities with NPI records 19

Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.

View all 19

Organizations & group practices 2

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.

Hospital & facility affiliations 4

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": "1138752000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1326067200000",
    "number": "1073585444",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "901 S OAKLAND ST",
            "address_2": "SUITE 204",
            "city": "SAINT JOHNS",
            "state": "MI",
            "postal_code": "488792200",
            "telephone_number": "989-224-2338",
            "fax_number": "989-224-2065"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "901 S OAKLAND ST",
            "address_2": "SUITE 204",
            "city": "SAINT JOHNS",
            "state": "MI",
            "postal_code": "488792200",
            "telephone_number": "989-224-2338",
            "fax_number": "989-224-2065"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HOLZHEI",
        "first_name": "GREGORY",
        "middle_name": "A",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-02-01",
        "last_updated": "2012-01-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "MI",
            "license": "5101013906",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PHP",
            "identifier": "01-01374",
            "state": "MI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA/PPOM",
            "identifier": "7755233",
            "state": "MI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MEDICARE",
            "identifier": "080192531",
            "state": "MI"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "4474532",
            "state": "MI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS",
            "identifier": "700A910020",
            "state": "MI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCN",
            "identifier": "081900134",
            "state": "MI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Saint Johns, MI

Sources for this page

Verify at the official NPI Registry.