Mark Alan Gellasch, PHYSICIAN ASSISTANT

Primary specialty

Medical Physician AssistantTaxonomy code 363AM0700X

License

0110000034 Issued in VA

Practice address

Branch Medical Clinic Norfolk
1721 Taussig Blvd
Norfolk, VA 23511

Phone

(757) 314-6377

NPI assigned

Jan 24, 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 2

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

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

{
    "created_epoch": "1138060800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1902876931",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2753 SANDPIPER RD",
            "city": "VIRGINIA BEACH",
            "state": "VA",
            "postal_code": "234564516",
            "telephone_number": "757-426-7700"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "BRANCH MEDICAL CLINIC NORFOLK",
            "address_2": "1721 TAUSSIG BLVD",
            "city": "NORFOLK",
            "state": "VA",
            "postal_code": "23511",
            "telephone_number": "757-314-6377"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GELLASCH",
        "first_name": "MARK",
        "middle_name": "ALAN",
        "credential": "PHYSICIAN ASSISTANT",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-01-24",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "VA",
            "license": "0110000034",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "STATE MEDICAL LICENCE",
            "identifier": "0110000034",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "NATIONAL CERTIFICATION",
            "identifier": "1003448",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Iris Geffner, LCSW
• Jodi Anderson Gehring, MD
• Linda Denise Geisaka, CFNP
• Lauren Geissinger, RN
• Marika Gelashvili, MD
• David M Geller
• Serendy Genao Ramirez
• Genesis Caring Companions
• Genesis Psychological Services, LLC
• Genesis Total Care LLC

• Medical Physician Assistant in Norfolk, VA
• Providers in Norfolk, VA by specialty
• Medical Physician Assistant in Virginia

• 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.