Gregory James Williams, DDS

Primary specialty

DentistTaxonomy code 122300000X

License

08343 Issued in IA

Practice address

326 W Central Ave
Estherville, IA 51334

Phone

(712) 362-4449

Fax

(712) 362-5313

NPI assigned

Oct 5, 2006

Last updated

May 13, 2025By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

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

{
    "created_epoch": "1160006400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1747094400000",
    "number": "1174619266",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "326 W CENTRAL AVE",
            "city": "ESTHERVILLE",
            "state": "IA",
            "postal_code": "513341827",
            "telephone_number": "712-362-4449",
            "fax_number": "712-362-5313"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "326 W CENTRAL AVE",
            "city": "ESTHERVILLE",
            "state": "IA",
            "postal_code": "51334",
            "telephone_number": "712-362-4449",
            "fax_number": "712-362-5313"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "GREGORY",
        "middle_name": "JAMES",
        "name_prefix": "Dr.",
        "credential": "DDS",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-10-05",
        "last_updated": "2025-05-13",
        "certification_date": "2025-05-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "122300000X",
            "taxonomy_group": "",
            "desc": "Dentist",
            "state": "IA",
            "license": "08343",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 13, 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.