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Gregory H Tchejeyan MD Inc

Specialist in Thousand Oaks, CA · enumerated 2011 · authorized official Siuke Lili, Manager.

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

National Provider Identifier

1376835330

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Registry record

Entity type Organization (Type 2)
Legal business name Gregory H Tchejeyan MD Inc
Practice address 250 Lombard St Ste 1, Thousand Oaks, CA, 91360
Phone (805) 495-3687
Fax (805) 494-1828
Enumeration date May 10, 2011
Last updated in NPPES Mar 29, 2022

Taxonomy & classification

174400000X Specialist Other Service Providers · License A55364 (CA) Primary

Authorized official

Name Siuke Lili
Title Manager
Phone (805) 495-3687

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.

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Frequently asked questions

What is the NPI number for Gregory H Tchejeyan MD Inc?
The NPI for Gregory H Tchejeyan MD Inc is 1376835330, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Gregory H Tchejeyan MD Inc?
NPPES lists Siuke Lili (Manager) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-29.