Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Gna Diagnostic

Organization Multi-Specialty Clinic/Center · NPI 1689888653

Gna Diagnostic is a Multi-Specialty Clinic/Center in Glendale, California. Registered with an NPI since 2007.

In the registry since
2007
Specialties on file
2

Practice location Address checks out

1386 E Garfield Ave
Glendale, CA 91205-2660
Phone: (818) 281-8091
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Multi-Specialty Clinic/Center (primary) Taxonomy 261QM1300X
Sleep Disorder Diagnostic Clinic/Center Taxonomy 261QS1200X

Record details

NPI number1689888653
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Grant Kostikian — Owner · (818) 281-8091
NPI enumeratedMay 9, 2007
Last updated in NPPESSeptember 11, 2025
Mailing address1386 E Garfield Ave, Glendale, CA 91205-2660

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