Gregory Corbett Thom, M.D.

Primary specialty

Vascular Surgery PhysicianTaxonomy code 2086S0129X

License

65518-20 Issued in WI

Practice address

2845 Greenbrier Rd Ste 230
Green Bay, WI 54311-6519

Phone

(920) 288-8250

Fax

(920) 288-8257

NPI assigned

Jun 25, 2009

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 1

Electronic endpoints 2

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

Vascular Surgery

Education

Medical College of Wisconsin, 2009

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Baycare Aurora LLCGroup PAC ID 0244130557, 197 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Aurora Baycare Medical Ctr Hospital, Green Bay, WI, CCN 520193
• Aurora Medical Center Bay Area Hospital, Marinette, WI, CCN 520113
• Aurora Medical Ctr Manitowoc County Hospital, Two Rivers, WI, CCN 520034

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: gthom178606@direct.myadvocateaurora.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.

• Baycare Aurora, LLC

  • General Acute Care Hospital
  • Green Bay, WI
  • NPI 1255387726

  Surgery

  Medicare reassignment Care Compare group NPD

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

• Aurora Health Care North, Inc.

  • General Acute Care Hospital
  • Two Rivers, WI
  • NPI 1477508687
  Care Compare affiliation
• Aurora Medical Center Bay Area, Inc

  • General Acute Care Hospital
  • Marinette, WI
  • NPI 1043397177
  Care Compare affiliation
• Aurora Medical Center Bay Area, Inc

  • Clinical Medical Laboratory
  • Marinette, WI
  • NPI 1083791115

  Hospital

  Care Compare affiliation
• Aurora Medical Center Bay Area, Inc

  • Land Ambulance
  • Marinette, WI
  • NPI 1427135557

  Hospital

  Care Compare affiliation
• Baycare Aurora, LLC

  • General Acute Care Hospital
  • Green Bay, WI
  • NPI 1255387726
  Care Compare affiliation

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

{
    "created_epoch": "1245888000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755216000000",
    "number": "1689802977",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 735044",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606735044",
            "telephone_number": "800-326-2250"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2845 GREENBRIER RD STE 230",
            "city": "GREEN BAY",
            "state": "WI",
            "postal_code": "543116519",
            "telephone_number": "920-288-8250",
            "fax_number": "920-288-8257"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "THOM",
        "first_name": "GREGORY",
        "middle_name": "CORBETT",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2009-06-25",
        "last_updated": "2025-08-15",
        "certification_date": "2025-08-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "WI",
            "license": "65518-20",
            "primary": false
        },
        {
            "code": "2086S0129X",
            "taxonomy_group": "",
            "desc": "Surgery, Vascular Surgery",
            "state": "WI",
            "license": "65518-20",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100059317",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "gthom178606@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "2845 Greenbrier Rd Ste 230",
            "city": "Green Bay",
            "state": "WI",
            "country_code": "US",
            "postal_code": "543116519",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "2845 Greenbrier Rd Ste 230",
            "city": "Green Bay",
            "state": "WI",
            "country_code": "US",
            "postal_code": "543116519",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Brian M Thielen, DMD
• Crystal Thiem
• Linda Thieme, COT
• Sarah C Thiesfeldt, MSW, LCSW
• Gesina JH Thiry, MD
• Thomas M. Farley, M.D., S.C.
• Alyssa M Thomas, PA
• Amy Thomas
• Christine A Thomas, RPH
• Cynthia R. Thomas, MSW

• Vascular Surgery Physician in Green Bay, WI
• Providers in Green Bay, WI by specialty
• Vascular Surgery Physician in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 15, 2025; 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.