Individual provider Active NPI

Anthony D Williams

  • Addiction (Substance Use Disorder) Counselor
  • Gary, IN
National Provider Identifier
1629931829
Registry record updated Dec 4, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Addiction (Substance Use Disorder) CounselorTaxonomy code 101YA0400X
License
C4-5108 Issued in IN
Practice address
1351 W 11TH Ave Ste 300a
Gary, IN 46402-2819
Phone
(312) 869-9326
NPI assigned
Dec 4, 2025
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Dec 4, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Addiction (Substance Use Disorder) CounselorGroup: 193200000X MULTI-SPECIALTY GROUP 101YA0400X C4-5108 IN Primary

Addresses

Primary practice location

1351 W 11TH Ave Ste 300a
Gary, IN 46402-2819

Mailing address

8577 McKinley St Apt Q473
Merrillville, IN 46410-8819
Phone (720) 643-8150

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled

State licenses

LicenseStateTypeSpecialty
C4-5108INMDAddiction (Substance Use Disorder) Counselor

Practice roles

OrganizationSpecialtyStatusNew patients
Spero Health of Indiana, LLC Multi-Specialty PastSince Dec 7, 2025 Accepting new patients

Organizations & group practices 1

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.

NPI Registry JSON

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

{
    "created_epoch": "1764806400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764806400000",
    "number": "1629931829",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8577 MCKINLEY ST APT Q473",
            "city": "MERRILLVILLE",
            "state": "IN",
            "postal_code": "464108819",
            "telephone_number": "720-643-8150"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1351 W 11TH AVE STE 300A",
            "city": "GARY",
            "state": "IN",
            "postal_code": "464022819",
            "telephone_number": "312-869-9326"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "ANTHONY",
        "middle_name": "D",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2025-12-04",
        "last_updated": "2025-12-04",
        "certification_date": "2025-12-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YA0400X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Counselor, Addiction (Substance Use Disorder)",
            "state": "IN",
            "license": "C4-5108",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Gary, IN

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 4, 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.