Grant Kostikian
NPI 1578777546 · Multi-Specialty Clinic/Center · Glendale, CA
Grant Kostikian is a Multi-Specialty Clinic/Center provider in Glendale, CA (NPI 1578777546).
Provider details
- NPI number
- 1578777546
- Entity type
- Individual
- Primary specialty
- Multi-Specialty Clinic/CenterAmbulatory Health Care Facilities
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Ambulatory Health Care Facilities
- Sleep Disorder Diagnostic Clinic/Center261QS1200X
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-09
- Last updated
- 2025-09-11
Frequently asked questions
- What is Grant Kostikian's NPI number?
- Grant Kostikian's National Provider Identifier (NPI) is 1578777546, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grant Kostikian's specialty?
- Grant Kostikian is listed in the NPPES registry with a primary specialty of Multi-Specialty Clinic/Center (Ambulatory Health Care Facilities).
- Where is Grant Kostikian located?
- Grant Kostikian's practice location on file with NPPES is 1386 E Garfield Ave, Glendale, CA 91205-2660.
- What is Grant Kostikian's phone number?
- The practice phone number listed in the NPPES registry for Grant Kostikian is (818) 281-8091.
- Is Grant Kostikian's NPI active?
- Yes — Grant Kostikian's NPI (1578777546) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.