Robert F Geisler, M.D.

Primary specialty

SpecialistTaxonomy code 174400000X

License

ME0045397 Issued in FL

Practice address

3155 N McMullen Booth Rd
Clearwater, FL 33761-2008

Phone

(727) 669-9018

Fax

(727) 669-4308

NPI assigned

Mar 1, 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

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• Pinellas Radiation Oncology Associates

  • Specialist
  • Clearwater, FL
  • NPI 1366491748
  NPD (past)

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

{
    "created_epoch": "1141171200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1104893023",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3155 N MCMULLEN BOOTH RD",
            "city": "CLEARWATER",
            "state": "FL",
            "postal_code": "337612008",
            "telephone_number": "727-669-9018",
            "fax_number": "727-669-4308"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3155 N MCMULLEN BOOTH RD",
            "city": "CLEARWATER",
            "state": "FL",
            "postal_code": "337612008",
            "telephone_number": "727-669-9018",
            "fax_number": "727-669-4308"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GEISLER",
        "first_name": "ROBERT",
        "middle_name": "F",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-03-01",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "FL",
            "license": "ME0045397",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• All providers in Clearwater, FL
• Specialist in Florida

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.