Gna Diagnostic

Primary specialty

Multi-Specialty Clinic/CenterTaxonomy code 261QM1300X

Legal business name

GNA DIAGNOSTIC

Practice address

1386 E Garfield Ave
Glendale, CA 91205-2660

Phone

(818) 281-8091

NPI assigned

May 9, 2007

Organization subpart

No

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name

Mr. Grant KostikianNPI 1578777546

Title

Owner

Phone

(818) 281-8091

Specialties & licenses 2

Addresses

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Grant Kostikian

  • Multi-Specialty Clinic/Center
  • Glendale, CA
  • NPI 1578777546
  NPD (past) Authorized official

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

{
    "created_epoch": "1178668800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1757548800000",
    "number": "1689888653",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1386 E GARFIELD AVE",
            "city": "GLENDALE",
            "state": "CA",
            "postal_code": "912052660",
            "telephone_number": "818-281-8091"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1386 E GARFIELD AVE",
            "city": "GLENDALE",
            "state": "CA",
            "postal_code": "912052660",
            "telephone_number": "818-281-8091"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "GNA DIAGNOSTIC",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-05-09",
        "last_updated": "2025-09-11",
        "status": "A",
        "authorized_official_last_name": "KOSTIKIAN",
        "authorized_official_first_name": "GRANT",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "818-281-8091",
        "authorized_official_name_prefix": "Mr."
    },
    "taxonomies": [
        {
            "code": "261QM1300X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Multi-Specialty",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "261QS1200X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Sleep Disorder Diagnostic",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• GMZ Pharmacy Corp
• Emily Gnip, RPH
• Goanda
• Megan Godoy, PA-C
• Gods Way Home Health Care Inc
• Nino Goduadze, NONE

• Multi-Specialty Clinic/Center in Glendale, CA
• Providers in Glendale, CA by specialty
• Multi-Specialty Clinic/Center in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; 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.