Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Health Diagnostic Center

Q: What is the NPI number for Health Diagnostic Center?

The NPI for Health Diagnostic Center is 1609955681, a Type 2 (organization) record in the CMS NPPES registry.

Sonography Radiologic Technologist in Los Angeles, CA · enumerated 2006 · authorized official Grachik Keloyan, Owner/Ceo.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1609955681

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Registry record

Entity type Organization (Type 2)

Legal business name Health Diagnostic Center

Practice address 3171 Los Feliz Blvd, 212, Los Angeles, CA, 90039

Phone (323) 662-2970

Fax (323) 662-2970

Enumeration date Nov 2, 2006

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

2471S1302X Sonography Radiologic Technologist Technologists, Technicians & Other Technical Service Providers · License TG 427 (CA) Primary

Authorized official

Name Grachik Keloyan

Title Owner/Ceo

Phone (323) 662-2970

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Who is the authorized official for Health Diagnostic Center?

NPPES lists Grachik Keloyan (Owner/Ceo) as the authorized official for this organization.

What is the NPI number for Health Diagnostic Center?

The NPI for Health Diagnostic Center is 1609955681, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.