NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dat Manh Nguyen M D A Professional Corporation

Allergy & Immunology (Internal Medicine) Physician in Westminster, CA · enumerated 2006 · authorized official Dat Nguyen, President.

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

National Provider Identifier

1548272917

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Dat Manh Nguyen M D A Professional Corporation
Practice address 14536 Brookhurst St, Suite #102, Westminster, CA, 92683
Fax (714) 531-2450
Enumeration date Aug 13, 2006
Last updated in NPPES Aug 4, 2025

Taxonomy & classification

207RA0201X Allergy & Immunology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License A36056 (CA) Primary

Authorized official

Name Dat Nguyen
Title President

Other identifiers

Identifier Type State Issuer
00A360562 Medicaid CA -

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 2025-08-04. Verify at npiregistry.cms.hhs.gov.
Where is Dat Manh Nguyen M D A Professional Corporation located?
The practice location on file with NPPES is in Westminster, CA.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-04.