Alonzo D. Williams Sr., M.D.

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

C5546 Issued in AR

Practice address

8908 Kanis Rd
Little Rock, AR 72205-6414

Phone

(501) 227-7688

Fax

(501) 225-2930

NPI assigned

Jan 23, 2006

Last updated

Jul 13, 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

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Merit-based Incentive Payment System (MIPS)

Final score

22.8 of 100Reported as individual

Quality

0

Improvement activities

0

Cost

75.99

Medicare enrollment (NPD)

Not enrolled

HHS exclusion list flag

CMS’s directory marks this NPI as on an HHS exclusion list; no matching OIG record was found. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.

Credentials

Doctor of Medicine

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Pinnacle Pathology

  • Clinical Medical Laboratory
  • Little Rock, AR
  • NPI 1952528648
  NPD (past) Authorized official
• Proscan Imaging of Arkansas, LLC

  dba Proscan Imaging Arkansas

  • Diagnostic Radiology Physician
  • Little Rock, AR
  • NPI 1891786935
  Authorized official Same address or phone
• Arkansas Diagnostic Center, PA

  • Specialist
  • Little Rock, AR
  • NPI 1003259490
  NPD (past)

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

{
    "created_epoch": "1137974400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1326018581",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 55130",
            "city": "LITTLE ROCK",
            "state": "AR",
            "postal_code": "722155130",
            "telephone_number": "501-227-7688",
            "fax_number": "501-225-2930"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8908 KANIS RD",
            "city": "LITTLE ROCK",
            "state": "AR",
            "postal_code": "722056414",
            "telephone_number": "501-227-7688",
            "fax_number": "501-225-2930"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "ALONZO",
        "middle_name": "D.",
        "name_prefix": "Dr.",
        "name_suffix": "Sr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-01-23",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "AR",
            "license": "C5546",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Aaliyha Williams
• Alan D Williams, M.D.
• Alecia Williams
• Alecia Williams
• Alison Nicole Williams, THERAPIST LPC LRSB
• Alyshia Flowers Williams
• Amanda Williams, LPC
• Amanda Gail Williams, PT, DPT
• Amber Williams
• Anita M Williams

• Gastroenterology Physician in Little Rock, AR
• Providers in Little Rock, AR by specialty
• Gastroenterology Physician in Arkansas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• 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.