Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Tien Quang Nguyen, MD

Q: What is the NPI number for Tien Nguyen?

The National Provider Identifier (NPI) for Tien Nguyen is 1396741351, a Type 1 (individual) record in the CMS NPPES registry.

Dermatology Physician in Fountain Valley, CA · enumerated 2005 · practices at Tien Q Nguyen Inc.

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

National Provider Identifier

1396741351

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Registry record

Entity type Individual (Type 1)

Name Dr. Tien Quang Nguyen

Credential MD

Sex Male

Practice address Fountain Valley, CA, 92708

Phone (714) 531-2966

Fax (714) 531-3495

Enumeration date Jun 24, 2005

Last updated in NPPES Apr 1, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 20979 (NV) Secondary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License G50454 (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

Where does Tien Nguyen practice?

The practice location on file with NPPES is in Fountain Valley, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Tien Nguyen?

The National Provider Identifier (NPI) for Tien Nguyen is 1396741351, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-01.