npidata.org Sign in
Products
Provider RadarWatch an area and specialty — weekly alerts on new cliniciansPractice RadarWeekly alerts when new organisations register nearbySpecialtiesEvery NUCC taxonomy, with counts by state and cityStatesProvider counts and breakdowns for all 50 statesPhysician listsMDs and DOs with addresses and phone numbersNP listsNurse practitioners, the fastest-growing groupAPIJSON, delta feed, free tier
Use cases
Healthcare sales prospectingPhysician recruiting and locum staffingMedical device sales territory planningCredentialing and provider verificationHealthcare marketing lists and audience buildingPharmaceutical sales and prescriber targeting
Account
Start freeThree radars and an export a month Sign in Pricing
Explore
Data Labs API
About
About usTermsPrivacyContact us

Search › California › 261QM1300X

Grant Kostikian

NPI 1578777546 · on the registry since 2007 · sole proprietor

Practice

Address
1386 E Garfield Ave
Glendale, CA 91205
Phone
(818) 281-8091
Organisation at this address
Gna Diagnostic
Grant Diagnostic Services,Inc
Inferred from a shared address, not stated in the registry.

Registry record

Primary taxonomy
261QM1300X
261QM1300X
Also registered as
261QS1200X
Sex
Male
Record last updated
2025-09-11

Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in California