Thomas Westfall, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

54671-20 Issued in WI

Practice address

202 S Park St
Madison, WI 53715-1507

Phone

(608) 417-5659

Fax

(608) 417-5890

NPI assigned

Jul 16, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in WI

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

Internal Medicine

Education

University of Wisconsin School of Medicine, 2003

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Meriter Hospital IncGroup PAC ID 3971412735, 122 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Unitypoint Health - Meriter Hospital, Madison, WI, CCN 520089
• University of Wi Hospitals & Clinics Authority Hospital, Madison, WI, CCN 520098

Merit-based Incentive Payment System (MIPS)

Final score

87.59 of 100Reported as group

Quality

84.57

Promoting interoperability

91

Improvement activities

40

Cost

81.57

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: twestfall268153@direct.unitypoint.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.

• Meriter Hospital, Inc.

  • Psychiatric Hospital Unit
  • Madison, WI
  • NPI 1548280225
  Medicare reassignment Care Compare group NPD
• Meriter Hospital, Inc.

  • General Practice Physician
  • Madison, WI
  • NPI 1932572955
  NPD
• St Luke'S Methodist Hospital

  • General Acute Care Hospital
  • Cedar Rapids, IA
  • NPI 1083708226
  NPD
• Northwestern Memorial Physicians Group

  • Internal Medicine Physician
  • Chicago, IL
  • NPI 1538111299
  NPD (past)

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

• Meriter Hospital, Inc.

  • Rehabilitation Clinic/Center
  • Madison, WI
  • NPI 1073672556

  Hospital

  Care Compare affiliation
• Meriter Hospital, Inc.

  • General Acute Care Hospital
  • Madison, WI
  • NPI 1114920048
  Care Compare affiliation
• University of Wisconsin Hospitals and Clinics Authority

  • General Acute Care Hospital
  • Madison, WI
  • NPI 1922043744
  Care Compare affiliation

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

{
    "created_epoch": "1153008000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781308800000",
    "number": "1558388355",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "202 S PARK ST",
            "city": "MADISON",
            "state": "WI",
            "postal_code": "537151507",
            "telephone_number": "608-417-6000",
            "fax_number": "608-417-3878"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "202 S PARK ST",
            "city": "MADISON",
            "state": "WI",
            "postal_code": "537151507",
            "telephone_number": "608-417-5659",
            "fax_number": "608-417-5890"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WESTFALL",
        "first_name": "THOMAS",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-16",
        "last_updated": "2026-06-13",
        "certification_date": "2026-06-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "WI",
            "license": "54671-20",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WI",
            "license": "54671-20",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036-115763",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Bethany E Westerfeldt, NP
• Mary C Westergaard, MD
• Ryan P Westergaard, MD
• Sara Jane Westergaard, M.D.
• Elizabeth Childress Western, M.D., PH.D.
• Rebecca Westgate, COTA
• Westland Care LLC
• Reuben Westmaas, LCSW
• Jillian Renee Weston, DPT
• Linda Marie Westphal, MS-MFT

• Internal Medicine Physician in Madison, WI
• Providers in Madison, WI by specialty
• Internal Medicine Physician in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 13, 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.