Alex Timothy Geertsen, MD

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

MD494888 Issued in PA

Practice address

500 University Dr
Hershey, PA 17033-2360

Phone

(800) 243-1455

NPI assigned

Apr 25, 2022

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

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in PA

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

AnesthesiologyAlso: Pain Management

Education

Pennsylvania State University College of Medicine, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

The Milton S Hershey Medical Center Physicians GroupGroup PAC ID 3870405483, 1,606 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Interoperability endpoints

• Direct secure messaging: ageertsen@pennstatehealth.psu.edu

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.

• The Milton S Hershey Medical Center Physicians Group

  • Orthopaedic Surgery Physician
  • Hershey, PA
  • NPI 1710951744
  Care Compare group

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

{
    "created_epoch": "1650844800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781654400000",
    "number": "1407590409",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "500 UNIVERSITY DR",
            "city": "HERSHEY",
            "state": "PA",
            "postal_code": "170332360",
            "telephone_number": "800-243-1455"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "500 UNIVERSITY DR",
            "city": "HERSHEY",
            "state": "PA",
            "postal_code": "170332360",
            "telephone_number": "800-243-1455"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GEERTSEN",
        "first_name": "ALEX",
        "middle_name": "TIMOTHY",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-04-25",
        "last_updated": "2026-06-17",
        "certification_date": "2026-06-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "PA",
            "license": "MD494888",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "ageertsen@pennstatehealth.psu.edu",
            "affiliation": "N",
            "address_1": "30 Hope Dr Ste 1300",
            "city": "Hershey",
            "state": "PA",
            "country_code": "US",
            "postal_code": "170332036",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Sandra Gascon-Garcia, MD
• Adrienne S Gasda, CRNP
• Gastroenterology Associates of Central Pennsylvania, P.C.
• Jean-Marc Gauguet, MD/PHD
• Patrick Joseph Gavigan, M.D.
• Sarah Elizabeth Gehman
• Abby K Geletzke, MD
• Inginia Genao, MD
• Jenilee April Mary Generalla, M.D.
• Matthew Generotti, DO

• Anesthesiology Physician in Hershey, PA
• Providers in Hershey, PA by specialty
• Anesthesiology Physician in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 17, 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.