Katelyn Grizzle, AU.D.

Primary specialty

AudiologistTaxonomy code 231H00000X

License

1601000876 Issued in MI

Practice address

3075 E Grand River Ave Suite 109
Howell, MI 48843

Phone

(517) 618-7717

NPI assigned

Aug 14, 2020

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 names 1

• Katelyn Hook Former name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

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 and National Provider Directory roles.

• Ace Hearing Center LLC

  • Audiologist
  • Howell, MI
  • NPI 1356853246
  NPD
• Mid Michigan Ear Nose & Throat, P.C.

  • Audiologist
  • East Lansing, MI
  • NPI 1497056246
  NPD (past)

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

{
    "created_epoch": "1597363200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1759276800000",
    "number": "1720699531",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3075 E GRAND RIVER AVE SUITE 109",
            "city": "HOWELL",
            "state": "MI",
            "postal_code": "48843",
            "telephone_number": "517-618-7717"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3075 E GRAND RIVER AVE SUITE 109",
            "city": "HOWELL",
            "state": "MI",
            "postal_code": "48843",
            "telephone_number": "517-618-7717"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GRIZZLE",
        "first_name": "KATELYN",
        "credential": "AU.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-08-14",
        "last_updated": "2025-10-01",
        "certification_date": "2025-10-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "231H00000X",
            "taxonomy_group": "",
            "desc": "Audiologist",
            "state": "MI",
            "license": "1601000876",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "KATELYN",
            "last_name": "HOOK",
            "credential": "AU.D.",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Donald V Greene, O.D.
• Gregory F. Piro D O PC
• Robert Timothy Gregory, LMFT
• Monica Garay Griesbeck, DDS
• Hillary Elaine Griffin, PA-C
• Cody Scott Gross
• Desarae L Gross
• John Grupp
• Gabrielle Marie Guglielmotti, BA
• Kelly Marie Guiette

• Audiologist in Howell, MI
• Providers in Howell, MI by specialty
• Audiologist in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 1, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.