John Richard Gavencak, MD

Primary specialty

Allergy PhysicianTaxonomy code 207KA0200X

License

124874 Issued in NY

Practice address

400 Atlantic Ave
East Rockaway, NY 11518-1433

Phone

(516) 599-2732

Fax

(516) 593-2075

NPI assigned

Nov 2, 2005

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

Enrolled in NY

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

Allergy/Immunology

Education

New York Medical College, 1974

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

New York Internal Medicine PCGroup PAC ID 4789819194, 12 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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.

• New York Internal Medicine, P.C.

  • Internal Medicine Physician
  • Whitestone, NY
  • NPI 1437591716

  NY

  Medicare reassignment Care Compare group
• Medhat F Sami MD PC

  • Internal Medicine Physician
  • Whitestone, NY
  • NPI 1427009752
  NPD
• Joseph P. Addabbo Family Health Center, Inc.

  • Federally Qualified Health Center (FQHC)
  • Ozone Park, NY
  • NPI 1134476443
  NPD (past)

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

{
    "created_epoch": "1130889600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1821089392",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "400 ATLANTIC AVE",
            "city": "EAST ROCKAWAY",
            "state": "NY",
            "postal_code": "115181433",
            "telephone_number": "516-599-2732",
            "fax_number": "516-593-2075"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "400 ATLANTIC AVE",
            "city": "EAST ROCKAWAY",
            "state": "NY",
            "postal_code": "115181433",
            "telephone_number": "516-599-2732",
            "fax_number": "516-593-2075"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GAVENCAK",
        "first_name": "JOHN",
        "middle_name": "RICHARD",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-02",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207KA0200X",
            "taxonomy_group": "",
            "desc": "Allergy & Immunology, Allergy",
            "state": "NY",
            "license": "124874",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Patricia Mary Forte, O.T.R./L
• Cleve William Frazier, BS/MS OM DIPL AC.
• Marian Frias-Walsh
• Vera A. Gallagher, OTR
• Marcia Debra Garel, DPM
• Pamela Beth Gerstman, R.D.
• Benjamin Giliberti
• Margaret Gillespie, LPN
• Brooke Giorlando
• Berel Gold, DDS

• All providers in East Rockaway, NY
• Allergy Physician in New York

• 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.
• 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.