Fred Harrison Williams, MD

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

118411 Issued in MO

Practice address

17298 N Outer 40 Rd Ste 200
Chesterfield, MO 63005-1456

Phone

(314) 529-4900

Fax

(314) 434-2679

NPI assigned

Jul 29, 2005

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

Enrolled in MO

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

GastroenterologyAlso: Internal Medicine

Education

University of Missouri, Kansas City, School of Medicine, 1986

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Gateway Gastroenterology IncGroup PAC ID 2668448713, 25 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St Lukes Hospital Hospital, Chesterfield, MO, CCN 260179

Merit-based Incentive Payment System (MIPS)

Final score

63.97 of 100Reported as group

Quality

79.89

Promoting interoperability

0

Improvement activities

40

Cost

83.34

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir4.healow.com/fhir/r4/BBJFAD

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.

• Gateway Gastroenterology Inc

  • Specialist
  • Chesterfield, MO
  • NPI 1043250400
  Medicare reassignment Care Compare group NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• St. Lukes Episcopal-Presbyterian Hospital

  • General Acute Care Hospital
  • Chesterfield, MO
  • NPI 1346251543
  Care Compare affiliation

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

{
    "created_epoch": "1122595200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782864000000",
    "number": "1386644326",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "17298 N OUTER 40 RD STE 200",
            "city": "CHESTERFIELD",
            "state": "MO",
            "postal_code": "630051456",
            "telephone_number": "314-529-4900",
            "fax_number": "314-434-2679"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "17298 N OUTER 40 RD STE 200",
            "city": "CHESTERFIELD",
            "state": "MO",
            "postal_code": "630051456",
            "telephone_number": "314-529-4900",
            "fax_number": "314-434-2679"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "FRED",
        "middle_name": "HARRISON",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-07-29",
        "last_updated": "2026-07-01",
        "certification_date": "2026-07-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "MO",
            "license": "118411",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Steven F Willey, MD
• William Dr Carpenter LLC
• William S. Hallums, DC LLC
• William Sedgwick MD Orthopaedic Surgery and Sports Medicine PC
• Tamara Joan Williams-Reding, M.ED., LPC
• James L Williams II, MD
• Kristine G Williams, MD
• Samara Marie Williamson, AGNP-C
• Kristen M Willingham, AGNP
• Sarah Ann Willis, PT

• Gastroenterology Physician in Chesterfield, MO
• Providers in Chesterfield, MO by specialty
• Gastroenterology Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 1, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.