Janet Ttheresa Guisinger, M.D.

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

4301064424 Issued in MI

Practice address

3403 E Midland Rd
Bay City, MI 48706-2825

Phone

(989) 684-1100

Fax

(989) 684-3340

NPI assigned

Jun 2, 2006

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

Other identifiers 2

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

Family Practice

Education

Other, 1993

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Hospital & facility affiliations

• Covenant Medical Center Hospital, Saginaw, MI, CCN 230070

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practitioners 2

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Jennifer Lynn Azelton, N.P.

  • Family Nurse Practitioner
  • Saginaw, MI
  • NPI 1124583158
  Medicare reassignment
• Molly Marie Bailey, NP-C

  • Nurse Practitioner
  • Grand Rapids, MI
  • NPI 1972172054
  Medicare reassignment

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

• Covenant Medical Center, Inc.

  dba Covenant Healthcare

  • General Acute Care Hospital
  • Saginaw, MI
  • NPI 1588656946
  Care Compare affiliation

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

{
    "created_epoch": "1149206400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1295773208",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3403 E MIDLAND RD",
            "city": "BAY CITY",
            "state": "MI",
            "postal_code": "487062825",
            "telephone_number": "989-684-1100",
            "fax_number": "989-684-3340"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3403 E MIDLAND RD",
            "city": "BAY CITY",
            "state": "MI",
            "postal_code": "487062825",
            "telephone_number": "989-684-1100",
            "fax_number": "989-684-3340"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GUISINGER",
        "first_name": "JANET",
        "middle_name": "TTHERESA",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-06-02",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "MI",
            "license": "4301064424",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS",
            "identifier": "0800900802",
            "state": "MI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA",
            "identifier": "5384614",
            "state": "MI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Maria Nancy Grzincic, OTRL
• Josalyn Gucwa
• Barbara Guerin
• James A Guigelaar, MD
• Theresa Guinther-Mulders, DO
• Cassondra Gulczinski-Lee
• Jaquelyn R Guldi, MA, LPC, CAADC, CCTP
• Brittany Gustafson
• Adrianna Gutzwiller
• Amanda Mercedes Gwizdala

• Family Medicine Physician in Bay City, MI
• Providers in Bay City, MI by specialty
• Family Medicine 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.