Michael Langham Williams, M.D.

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

01099277A Issued in IN

Practice address

1111 N Ronald Reagan Pkwy
Avon, IN 46123-7085

Phone

(317) 217-3000

NPI assigned

May 11, 2015

Sex

Male

Sole proprietor

No

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

Specialties & licenses 4

Addresses

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in AL, MO, WA, LA, TX, IN6 enrollments

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 6

Specialty

Emergency Medicine

Education

University of Texas Medical School at Houston, 2015

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Shannon ClinicGroup PAC ID 0840103727, shared by 3 NPIs, 550 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Ascension Providence Hospital, Waco, TX, CCN 450042
• Shannon Medical Center Hospital, San Angelo, TX, CCN 450571
• Indiana University Health Hospital, Indianapolis, IN, CCN 150056

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mwilliams640268@direct.multicare.org

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.

• App of Alabama Ed PLLC

  • Emergency Medicine Physician
  • Russellville, AL
  • NPI 1659646040
  Medicare reassignment NPD
• Highland Emergency Group, LLC

  • Emergency Medicine Physician
  • Shreveport, LA
  • NPI 1154913861
  Medicare reassignment NPD
• Mercy Hospital Springfield

  • General Acute Care Hospital
  • Springfield, MO
  • NPI 1043242159
  Medicare reassignment NPD
• Sound Physicians Emergency Medicine of Washington PLLC

  • Emergency Medicine Physician
  • Sedro Woolley, WA
  • NPI 1629532064
  Medicare reassignment NPD
• Third Coast Emergency Physicians Southwest PA

  • Emergency Medicine Physician
  • San Antonio, TX
  • NPI 1497793475
  Medicare reassignment NPD
• Travis County Emergency Physicians PA

  • Emergency Medicine Physician
  • Austin, TX
  • NPI 1962440933
  Medicare reassignment NPD
• Mercy Hospital Springfield

  • Medicare Defined Swing Bed Hospital Unit
  • Springfield, MO
  • NPI 1053907113
  NPD

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

• Indiana University Health Inc

  • General Acute Care Hospital
  • Indianapolis, IN
  • NPI 1144266024
  Care Compare affiliation
• Ascension Providence

  • General Acute Care Hospital
  • Waco, TX
  • NPI 1093708679
  Care Compare affiliation
• Shannon Medical Center

  • General Acute Care Hospital
  • San Angelo, TX
  • NPI 1992707228
  Care Compare affiliation

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

{
    "created_epoch": "1431302400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786924800000",
    "number": "1811375835",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "250 N SHADELAND AVE",
            "city": "INDIANAPOLIS",
            "state": "IN",
            "postal_code": "462194959"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1111 N RONALD REAGAN PKWY",
            "city": "AVON",
            "state": "IN",
            "postal_code": "461237085",
            "telephone_number": "317-217-3000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2401 S 31st St",
            "address_2": "MS-11-AG062",
            "address_purpose": "LOCATION",
            "city": "Temple",
            "state": "TX",
            "postal_code": "765080001",
            "country_code": "US",
            "telephone_number": "409-454-6800",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "200 E Chestnut St",
            "address_purpose": "LOCATION",
            "city": "Louisville",
            "state": "KY",
            "postal_code": "402021831",
            "country_code": "US",
            "telephone_number": "502-683-8000",
            "fax_number": "502-629-6129",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "MICHAEL",
        "middle_name": "LANGHAM",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-05-11",
        "last_updated": "2026-08-17",
        "certification_date": "2026-08-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "WA",
            "license": "MD61329987",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "IN",
            "license": "01099277A",
            "primary": true
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "KY",
            "license": "C2437",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "TX",
            "license": "BP10053763",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "300088583",
            "state": "IN"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mwilliams@direct.iuhealth.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "1111 N Ronald Reagan Pkwy",
            "city": "Avon",
            "state": "IN",
            "country_code": "US",
            "postal_code": "461237085",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Emma Kay Williams, PA-C
• Leanne Williams, RBT
• Maxwell Williams, RPH
• Melissa Kay Williams, PA-C
• Michael Williams, PT
• Nicole Ann Williams
• Shantiara Williams, RBT
• Christopher M Wilson, MD
• Mark Owen Wilson, M.S.W., L.C.S.W.
• Rae Wilson, PT

• Emergency Medicine Physician in Avon, IN
• Providers in Avon, IN by specialty
• Emergency Medicine Physician in Indiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 17, 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.