Austin Frederick Tiesenga

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

5101029453 Issued in MI

Practice address

100 Michigan St NE
Grand Rapids, MI 49503-2560

Phone

(616) 391-3139

NPI assigned

Apr 21, 2023

Last updated

Sep 21, 2026By the provider in NPPES

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

Electronic endpoints 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

Internal Medicine

Education

Liberty Univ College of Osteopathic Medicine, 2023

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Hospital & facility affiliations

• Lakeland Hospital, St Joseph Hospital, St Joseph, MI, CCN 230021

Medicare enrollment (NPD)

Enrolled

State licenses

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

• Lakeland Hospitals at Niles and St Joseph, Inc

  dba Corewell Health Lakeland Hospitals

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

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

{
    "created_epoch": "1682035200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789948800000",
    "number": "1740977446",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 MICHIGAN ST NE",
            "address_2": "MC 845",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495032560"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 MICHIGAN ST NE",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495032560",
            "telephone_number": "616-391-3139"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TIESENGA",
        "first_name": "AUSTIN",
        "middle_name": "FREDERICK",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2023-04-21",
        "last_updated": "2026-09-21",
        "certification_date": "2026-09-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MI",
            "license": "5101029453",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicarr02.spectrumhealth.org/EpicFHIR/api/FHIR/R4/",
            "affiliation": "N",
            "address_1": "100 Michigan St NE",
            "city": "Grand Rapids",
            "state": "MI",
            "country_code": "US",
            "postal_code": "495032560",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "atiesenga1869125@epic00.corewelldirect.org",
            "affiliation": "N",
            "address_1": "100 Michigan St NE",
            "city": "Grand Rapids",
            "state": "MI",
            "country_code": "US",
            "postal_code": "495032560",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Tides Emotional Health LLC
• Tidy Home & Health Cleaning LLC
• Mitchell Robert Tiell, PA
• Brina Tiemeyer, LMSW
• Rebecca L Tiernan, PMHNP
• Madison Rae Tiesenga, PA-C
• Molly Jane Tiesenga, APRN
• David Edward Tiesma, M.D.
• Elizabeth Tietema
• Madeline Nicole Tietema

• Internal Medicine Physician in Grand Rapids, MI
• Providers in Grand Rapids, MI by specialty
• Internal Medicine Physician in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 21, 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.