John Duane Frantz, HEARING AID DISPENSE

Primary specialty

Hearing Instrument SpecialistTaxonomy code 237700000X

License

3501013979 Issued in MI

Practice address

4598 Plainfield Ave NE
Grand Rapids, MI 49525-1645

Phone

(616) 364-0090

NPI assigned

Nov 18, 2019

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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

Practice roles

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.

• Dynamite Hearing Consultants, LLC

  • Hearing Instrument Specialist
  • Grand Rapids, MI
  • NPI 1609111202
  NPD (past)
• Ruhling Enterprises Inc

  • Hearing Aid Equipment
  • Grand Rapids, MI
  • NPI 1619143518

  Hearing Instrument Specialist

  NPD (past)
• Audiology Distribution, LLC

  • Audiologist-Hearing Aid Fitter
  • Dublin, OH
  • NPI 1164707998
  NPD (past)

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

{
    "created_epoch": "1574035200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785283200000",
    "number": "1609411339",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "616 E NORTH ST",
            "city": "HASTINGS",
            "state": "MI",
            "postal_code": "490588613",
            "telephone_number": "616-293-1062"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4598 PLAINFIELD AVE NE",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495251645",
            "telephone_number": "616-364-0090"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "5475 Beckley Rd Ste 150",
            "address_purpose": "LOCATION",
            "city": "Battle Creek",
            "state": "MI",
            "postal_code": "490154277",
            "country_code": "US",
            "telephone_number": "269-441-6327",
            "fax_number": "269-441-6329",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "FRANTZ",
        "first_name": "JOHN",
        "middle_name": "DUANE",
        "name_prefix": "Mr.",
        "credential": "HEARING AID DISPENSE",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-11-18",
        "last_updated": "2026-07-29",
        "certification_date": "2026-07-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "237700000X",
            "taxonomy_group": "",
            "desc": "Hearing Instrument Specialist",
            "state": "MI",
            "license": "3501013979",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Emily Marie Franklin, MA, CCC-SLP
• Ovionne Franklin
• Patrice Franks
• Tasha Franks, DPT
• Irene Elizabeth Franowicz, REGISTERED DIETICIAN
• Margaret Frantz
• Sarah Frantz, LMSW
• Courtney R Franz, MD
• Jennifer Franz
• David Robert Franzblau, M.D.

• Hearing Instrument Specialist in Grand Rapids, MI
• Providers in Grand Rapids, MI by specialty
• Hearing Instrument Specialist in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 29, 2026; 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.