Liam G. Gannon, MD

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

042-0010022 Issued in VT

Practice address

100A Macdonough Dr
Vergennes, VT 05491-1057

Phone

(802) 877-0157

NPI assigned

Apr 17, 2006

Last updated

Sep 20, 2026By the provider in NPPES

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 2

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in VT, NE, ND, IL4 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

HospitalistAlso: Family Practice

Education

Saint Louis University School of Medicine, 1997

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Solace Health Medical Group IncGroup PAC ID 9830540624, 122 clinicians

Integritas Emergency Physician Services LLCGroup PAC ID 7113167446, 41 clinicians

Thomas H Boyd Memorial HospitalGroup PAC ID 8123085560, 30 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Thomas H Boyd Memorial Hospital Hospital, Carrollton, IL, CCN 141300
• Hamilton Memorial Hospital Hospital, McLeansboro, IL, CCN 141326
• Marshall Browning Hospital Hospital, Du Quoin, IL, CCN 141331
• McKenzie County Healthcare Systems Inc Hospital, Watford City, ND, CCN 351302
• Cottage Hospital Hospital, Woodsville, NH, CCN 301301

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: liam.gannon.1@19957.direct.athenahealth.com
• Direct secure messaging: liam.gannon.1@30520.direct.athenahealth.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Integritas Emergency Physician Services, LLC

  • Emergency Medicine Physician
  • Carbondale, IL
  • NPI 1790128817
  Medicare reassignment Care Compare group NPD
• Solace Health Medical Group Inc

  • Geriatric Medicine (Family Medicine) Physician
  • Redwood City, CA
  • NPI 1801669924

  VT

  Medicare reassignment Care Compare group NPD
• Thomas H. Boyd Memorial Hospital

  • Critical Access Hospital
  • Carrollton, IL
  • NPI 1811096811
  Medicare reassignment Care Compare group NPD
• McKenzie County Healthcare Systems Inc

  • Urgent Care Clinic/Center
  • Williston, ND
  • NPI 1396516506
  Medicare reassignment NPD
• McKenzie County Healthcare Systems Inc

  • Critical Access Hospital
  • Watford City, ND
  • NPI 1518988948

  Family Medicine

  Medicare reassignment NPD
• Memorial Health Care Systems

  dba MHCS Clinic Professional Services

  • Family Medicine Physician
  • Seward, NE
  • NPI 1699845016
  Medicare reassignment NPD
• Pawnee County Memorial Hospital

  • Critical Access Hospital
  • Pawnee City, NE
  • NPI 1992759781
  Medicare reassignment NPD
• McKenzie County Healthcare Systems Inc

  dba McKenzie Health Center

  • Obstetrics & Gynecology Physician
  • Watford City, ND
  • NPI 1689364598
  NPD
• Memorial Health Care Systems

  dba Memorial Hospital

  • Medicare Defined Swing Bed Hospital Unit
  • Seward, NE
  • NPI 1013087089
  NPD
• Pawnee County Memorial Hospital

  • Ambulance
  • Pawnee City, NE
  • NPI 1730448606
  NPD
• Thomas H. Boyd Memorial Hospital

  dba Thomas H. Boyd Rural Health Clinic

  • Rural Health Clinic/Center
  • Carrollton, IL
  • NPI 1164507604
  NPD
• Thomas H. Boyd Memorial Hospital

  • Skilled Nursing Facility
  • Carrollton, IL
  • NPI 1699973685
  NPD

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

• Cottage Hospital

  dba Rowe Health Center

  • Rural Health Clinic/Center
  • Woodsville, NH
  • NPI 1275857328

  Hospital

  Care Compare affiliation
• Cottage Hospital

  • Critical Access Hospital
  • Woodsville, NH
  • NPI 1528162799
  Care Compare affiliation
• Cottage Hospital

  • Critical Access Hospital
  • Woodsville, NH
  • NPI 1780723650
  Care Compare affiliation
• Cottage Hospital

  • Psychiatric Hospital Unit
  • Woodsville, NH
  • NPI 1841655677
  Care Compare affiliation
• Hamilton Memorial Hospital District

  • Critical Access Hospital
  • McLeansboro, IL
  • NPI 1447257258
  Care Compare affiliation
• Hamilton Memorial Hospital District

  dba Carmi Family Clinic

  • Rural Health Clinic/Center
  • Carmi, IL
  • NPI 1588902183

  Hospital

  Care Compare affiliation
• Marshall Browning Hospital Association

  • Critical Access Hospital
  • Du Quoin, IL
  • NPI 1821099441
  Care Compare affiliation
• McKenzie County Healthcare Systems Inc

  • Critical Access Hospital
  • Watford City, ND
  • NPI 1518988948
  Care Compare affiliation
• Thomas H. Boyd Memorial Hospital

  • Critical Access Hospital
  • Carrollton, IL
  • NPI 1811096811
  Care Compare affiliation

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

{
    "created_epoch": "1145232000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789862400000",
    "number": "1780648691",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100A MACDONOUGH DR",
            "city": "VERGENNES",
            "state": "VT",
            "postal_code": "054911057",
            "telephone_number": "802-877-0157"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100A MACDONOUGH DR",
            "city": "VERGENNES",
            "state": "VT",
            "postal_code": "054911057",
            "telephone_number": "802-877-0157"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GANNON",
        "first_name": "LIAM",
        "middle_name": "G.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-17",
        "last_updated": "2026-09-20",
        "certification_date": "2026-09-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "173000000X",
            "taxonomy_group": "",
            "desc": "Legal Medicine",
            "state": "VT",
            "license": "0420010022",
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "VT",
            "license": "042-0010022",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0VN2298",
            "state": "VT"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "OVN2298",
            "state": "VT"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://www.cms.gov/research-statistics-data-systems/electronic-submission-medical-documentation-esmd/cms-health-information-handler",
            "affiliation": "Y",
            "endpointDescription": "2.16.840.1.113883.13.34.110.1.998.01",
            "affiliationName": "CMS HIH",
            "use": "OTHER",
            "useDescription": "Other",
            "useOtherDescription": "CMS esMD eMDR",
            "address_1": "7500 Security Blvd",
            "city": "Baltimore",
            "state": "MD",
            "country_code": "US",
            "postal_code": "212441849",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Christina Ensalata, MA COUNSELING
• Dylan Estes, M.D.
• Craig Fischer, RPH
• Robert Joel Frank, DDS
• Karen L Fromhold, M.D.
• Kate Alexandra Geschwind
• Gregory C Maurer DDS PC
• Daniel C Huber, M.D.
• Shannon Jacobson
• John Graham Shelter

• Family Medicine Physician in Vergennes, VT
• Providers in Vergennes, VT by specialty
• Family Medicine Physician in Vermont

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 20, 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.