NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Quang Nguyen, O.D.

Optometrist in San Diego, CA · enumerated 2005.

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

National Provider Identifier

1417948449

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Quang Nguyen
Credential O.D.
Sex Male
Practice address 6945 El Cajon Blvd, San Diego, CA, 92115
Phone (619) 697-4600
Fax (619) 464-5526
Enumeration date Oct 31, 2005
Last updated in NPPES Nov 29, 2021

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OPT11814 (CA) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier Type State Issuer
OPT11814 Other CA STATE LICENSE NUMBER
GR0052930 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

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.
What specialty is Quang Nguyen?
Quang Nguyen is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-29.