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Thc - Orange County, LLC

General Practice Physician in Ontario, CA · enumerated 2009 · authorized official Mostafa Darvish, Executive Director.

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

National Provider Identifier

1578795738

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Registry record

Entity type Organization (Type 2)
Legal business name Thc - Orange County, LLC
Practice address 550 N Monterey Ave, Ontario, CA, 91764
Phone (909) 391-0333
Fax (909) 391-2892
Enumeration date Aug 20, 2009
Last updated in NPPES Jul 19, 2018

Taxonomy & classification

208D00000X General Practice Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Mostafa Darvish
Title Executive Director
Phone (714) 893-4541

Other identifiers

Identifier Type State Issuer
HSP30041K Medicaid CA -
ZZZ94036Z Other CA BLUE CROSS

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 Thc - Orange County, LLC?
The NPI for Thc - Orange County, LLC is 1578795738, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Thc - Orange County, LLC?
NPPES lists Mostafa Darvish (Executive Director) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-19.