Carl M Williams, M.D.

Primary specialty

Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X

License

60181-20 Issued in WI

Practice address

11104 Parkview Circle Dr
Fort Wayne, IN 46845-1672

Phone

(260) 373-9700

Fax

(260) 373-9740

NPI assigned

Dec 26, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 8

Addresses

Other identifiers 7

Other names 1

• Carl Marc Williams Former name

Electronic endpoints 5

Medicare fee-for-service enrollment

Enrolled in IN, PA, WI, VA4 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 4

Specialty

Critical Care (Intensivists)Also: Pulmonary Disease

Education

University of Maryland School of Medicine, 1995

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mercy Health System CorporationGroup PAC ID 7416860440, 749 clinicians

MCHS Hospitals IncGroup PAC ID 5698071173, 1,195 clinicians

Parkview Health System IncGroup PAC ID 2163336967, 1,350 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Marshfield Medical Center - Weston Hospital, Weston, WI, CCN 520202
• Parkview Regional Medical Center Hospital, Fort Wayne, IN, CCN 150021
• Marshfield Medical Center - Minocqua Hospital, Minocqua, WI, CCN 520212

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• devoted network organization-2d523d8e-e8f9-454a-bcd3-333df65bdbe8
• devoted network organization-8ee96498-f86e-45f6-9fc9-a0f06c1636f9
• devoted network organization-9f3dfbd3-4aa6-4c92-8e71-9c4ed35ce037

Interoperability endpoints

• Direct secure messaging: cwilliams529939@direct.parkviewexchange.com
• Direct secure messaging: carl.williams@marshfieldclinichealthsystem.cernerdirect.com

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.

• Parkview Health System Inc

  • Family Medicine Physician
  • Fort Wayne, IN
  • NPI 1932130952
  Medicare reassignment Care Compare group NPD
• MCHS Hospitals Inc

  • Clinic/Center
  • Marshfield, WI
  • NPI 1093221434
  Medicare reassignment Care Compare group NPD
• Mercy Health System Corporation

  • Multi-Specialty Clinic/Center
  • Janesville, WI
  • NPI 1598718603
  Medicare reassignment Care Compare group NPD
• Excela Health Physician Practices, Inc

  • Cardiovascular Disease Physician
  • Greensburg, PA
  • NPI 1821225202
  Medicare reassignment NPD
• Marshfield Clinic Inc

  • Clinic/Center
  • Marshfield, WI
  • NPI 1952347981
  Medicare reassignment NPD
• Sound Physicians Intensivists of Virginia LLC

  • Critical Care Medicine (Internal Medicine) Physician
  • Richmond, VA
  • NPI 1619520806
  Medicare reassignment NPD
• Aspirus Medical Group, Inc.

  • Clinic/Center
  • Wausau, WI
  • NPI 1003021452
  Medicare reassignment
• Parkview Health System, Inc.

  • Pulmonary Disease Physician
  • Fort Wayne, IN
  • NPI 1548571227

  Critical Care Medicine

  NPD
• Aspirus Medical Group, Inc.

  • Clinic/Center
  • Wausau, WI
  • NPI 1669595294
  NPD
• Aspirus Medical Group, Inc.

  • Clinic/Center
  • Weston, WI
  • NPI 1720177371
  NPD
• Aspirus Medical Group, Inc.

  • Obstetrics & Gynecology Physician
  • Wausau, WI
  • NPI 1942084199
  NPD
• Excela Health Physician Practices, Inc.

  • Family Medicine Physician
  • Greensburg, PA
  • NPI 1235004193
  NPD

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

• Parkview Hospital, Inc.

  • General Acute Care Hospital
  • Fort Wayne, IN
  • NPI 1366407603
  Care Compare affiliation
• MCHS Hospitals Inc

  • Rural Acute Care Hospital
  • Minocqua, WI
  • NPI 1376197665
  Care Compare affiliation
• MCHS Hospitals Inc

  • General Acute Care Hospital
  • Weston, WI
  • NPI 1902437650
  Care Compare affiliation

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

{
    "created_epoch": "1167091200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778716800000",
    "number": "1003971490",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3400 MINISTRY PKWY",
            "city": "WESTON",
            "state": "WI",
            "postal_code": "544765220",
            "telephone_number": "715-393-1000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11104 PARKVIEW CIRCLE DR",
            "city": "FORT WAYNE",
            "state": "IN",
            "postal_code": "468451672",
            "telephone_number": "260-373-9700",
            "fax_number": "260-373-9740"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3400 Ministry Pkwy",
            "address_purpose": "LOCATION",
            "city": "Weston",
            "state": "WI",
            "postal_code": "544765220",
            "country_code": "US",
            "telephone_number": "715-393-1000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1001 E Primrose St",
            "address_purpose": "LOCATION",
            "city": "Springfield",
            "state": "MO",
            "postal_code": "658075155",
            "country_code": "US",
            "telephone_number": "417-875-3000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1000 Mineral Point Ave",
            "address_purpose": "LOCATION",
            "city": "Janesville",
            "state": "WI",
            "postal_code": "535482940",
            "country_code": "US",
            "telephone_number": "608-756-6868",
            "fax_number": "608-756-6289",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "CARL",
        "middle_name": "M",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-12-26",
        "last_updated": "2026-05-14",
        "certification_date": "2026-05-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "PA",
            "license": "MD434996",
            "primary": false
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "ME",
            "license": "016380",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "WI",
            "license": "60181-20",
            "primary": true
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "WI",
            "license": "60181-20",
            "primary": false
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "IN",
            "license": "01064129A",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "IN",
            "license": "01064129A",
            "primary": false
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "PA",
            "license": "MD434996",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "ME",
            "license": "016380",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HIGHMARK BLUE SHIELD",
            "identifier": "2051760",
            "state": "PA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200869120",
            "state": "IN"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1003971490",
            "state": "WI"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1021751160001",
            "state": "PA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "ANTHEM PROVIDER NUMBER",
            "identifier": "000000528048",
            "state": "IN"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "FIRST PRIORITY HEALTH",
            "identifier": "823273",
            "state": "PA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PHCS PID NUMBER",
            "identifier": "PENDING",
            "state": "IN"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "cwilliams354562@direct-ehr-ssmhc.com",
            "affiliation": "Y",
            "affiliationName": "AGNESIAN HEALTHCARE INC",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "cwilliams354562@direct-ehr-ssmhc.com",
            "address_1": "430 E Division St",
            "city": "Fond Du Lac",
            "state": "WI",
            "country_code": "US",
            "postal_code": "549354560",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://fhir.ssmhc.com/fhir/api/FHIR/DSTU2/",
            "affiliation": "Y",
            "affiliationName": "AGNESIAN HEALTHCARE INC",
            "use": "OTHER",
            "useDescription": "Other",
            "useOtherDescription": "FHIRAPI",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCD",
            "address_1": "430 E Division St",
            "city": "Fond Du Lac",
            "state": "WI",
            "country_code": "US",
            "postal_code": "549354560",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "cwilliams529939@Direct.Parkviewexchange.com",
            "affiliation": "N",
            "address_1": "11104 Parkview Circle Dr",
            "city": "Fort Wayne",
            "state": "IN",
            "country_code": "US",
            "postal_code": "468451672",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicprod-mobile.parkview.com/FHIR/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "11104 Parkview Circle Dr",
            "city": "Fort Wayne",
            "state": "IN",
            "country_code": "US",
            "postal_code": "468451672",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicprod-mobile.parkview.com/FHIR/api/FHIR/R4/",
            "affiliation": "N",
            "address_1": "11104 Parkview Circle Dr",
            "city": "Fort Wayne",
            "state": "IN",
            "country_code": "US",
            "postal_code": "468451672",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "CARL",
            "last_name": "WILLIAMS",
            "middle_name": "MARC",
            "credential": "MD",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Marjorie D Williams-Simpson, MD
• Adam Lee Williams
• Aliyanna Williams, RBT
• Austin Williams, RBT
• Barton Wade Williams, M.D.
• Casey N Williams
• Chantel Williams
• Dameta Diane Williams, MASTER ESTHETICIAN
• Daneil Sue Williams
• David Richard Williams, LAT/ATC

• Critical Care Medicine (Internal Medicine) Physician in Fort Wayne, IN
• Providers in Fort Wayne, IN by specialty
• Critical Care Medicine (Internal Medicine) Physician in Indiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 14, 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.