Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Linh Dan Nguyen, M.D.

Specialist in Fountain Valley, CA · enumerated 2006.

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

National Provider Identifier

1619932506

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Registry record

Entity type Individual (Type 1)

Name Linh Dan Nguyen

Credential M.D.

Sex Female

Practice address 9940 Talbert Ave, Suite 303, Fountain Valley, CA, 92708

Phone (714) 378-5606

Fax (714) 378-5621

Enumeration date Apr 20, 2006

Last updated in NPPES May 11, 2012

Taxonomy & licenses

174400000X Specialist Other Service Providers · License G80266 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 Linh Dan Nguyen?

Linh Dan Nguyen is registered in NPPES with the primary taxonomy of Specialist. 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 2012-05-11.