Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Phu Thien Nguyen, D.O.

General Practice Physician in Garden Grove, CA · enumerated 2005.

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

National Provider Identifier

1386642866

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Registry record

Entity type Individual (Type 1)

Name Dr. Phu Thien Nguyen

Credential D.O.

Sex Male

Practice address 12555 Garden Grove Blvd, Suite 301, Garden Grove, CA, 92843

Phone (714) 741-0501

Fax (714) 741-0095

Enumeration date Jul 8, 2005

Last updated in NPPES Jun 18, 2026

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 20A7161 (CA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
00AX71610	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

What specialty is Phu Nguyen?

Phu Nguyen is registered in NPPES with the primary taxonomy of General Practice Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-18.