NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ata O. Mehrtash M.D. P.C.

Obstetrics & Gynecology Physician in Anaheim, CA · enumerated 2006 · authorized official Ata Mehrtash, President.

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

National Provider Identifier

1134294473

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Ata O. Mehrtash M.D. P.C.
Practice address 1491 E La Palma Ave, Suite A, Anaheim, CA, 92805
Phone (714) 776-2390
Fax (714) 776-3287
Enumeration date Nov 21, 2006
Last updated in NPPES Sep 11, 2025

Taxonomy & classification

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License C38016 (CA) Primary
207VE0102X Reproductive Endocrinology Physician Allopathic & Osteopathic Physicians · License C38016 (CA) Secondary

Authorized official

Name Ata Mehrtash
Title President
Phone (714) 776-2390

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2025-09-11. Verify at npiregistry.cms.hhs.gov.
Where is Ata O. Mehrtash M.D. P.C. located?
The practice location on file with NPPES is in Anaheim, CA.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.