Thomas A. Harrison, M.D.

Primary specialty

Cardiovascular Disease PhysicianTaxonomy code 207RC0000X

License

MD041842E Issued in PA

Practice address

100 N Academy Ave
Danville, PA 17822-2160

Phone

(570) 271-6523

NPI assigned

Mar 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 1

Addresses

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in PA

Eligible to order & refer

• Part B services: No
• Medical equipment: Yes
• Home health: No
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Geisinger Clinic

  • Family Medicine Physician
  • Danville, PA
  • NPI 1366493868
  Medicare reassignment NPD
• Geisinger-HM Joint Venture, LLC

  dba Geisinger Medical Clinic Lock Haven

  • Family Medicine Physician
  • Lock Haven, PA
  • NPI 1144876137
  Medicare reassignment NPD
• Geisinger Clinic

  • Diagnostic Radiology Physician
  • Danville, PA
  • NPI 1558313023
  NPD
• Geisinger-HM Joint Venture LLC

  • Internal Medicine Physician
  • Muncy, PA
  • NPI 1952076119
  NPD
• Geisinger-HM Joint Venture, LLC

  • Family Medicine Physician
  • Williamsport, PA
  • NPI 1073075909
  NPD
• Geisinger Clinic

  • Hospitalist Physician
  • Wilkes Barre, PA
  • NPI 1588614358
  NPD (past)

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

{
    "created_epoch": "1142467200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786233600000",
    "number": "1205805983",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 N ACADEMY AVE",
            "city": "DANVILLE",
            "state": "PA",
            "postal_code": "178224903",
            "telephone_number": "570-271-6144",
            "fax_number": "570-271-6578"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 N ACADEMY AVE",
            "city": "DANVILLE",
            "state": "PA",
            "postal_code": "178222160",
            "telephone_number": "570-271-6523"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HARRISON",
        "first_name": "THOMAS",
        "middle_name": "A.",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-03-16",
        "last_updated": "2026-08-09",
        "certification_date": "2020-08-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "PA",
            "license": "MD041842E",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "001127120",
            "state": "PA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "tharrison17335@direct.geisinger.edu",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "100 N Academy Ave",
            "city": "Danville",
            "state": "PA",
            "country_code": "US",
            "postal_code": "178222160",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Thomas M. Harrington, M.D.
• Courtney Harris
• Kimberley Anne Harris, PHARMD
• Mary E. Harris, M.D.
• Matthew Harris
• Brian E Harry, OD
• Kayla M Hart, PHARM.D.
• Richard Hartfield, DO, MBA
• Michelle L Hartford, PAC
• James E. Hartle, M.D.

• Cardiovascular Disease Physician in Danville, PA
• Providers in Danville, PA by specialty
• Cardiovascular Disease Physician in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 9, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.