Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Phuong Ngoc Nguyen, O.D.

Optometrist in Capitola, CA · enumerated 2007.

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

National Provider Identifier

1710177977

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Registry record

Entity type Individual (Type 1)

Name Dr. Phuong Ngoc Nguyen

Credential O.D.

Sex Male

Practice address 1855 41st Ave Ste G11, Capitola, CA, 95010

Phone (831) 475-6519

Fax (831) 475-0754

Enumeration date Jul 25, 2007

Last updated in NPPES Jan 10, 2023

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OPT 13294 (CA) Primary

152W00000X Optometrist Eye and Vision Services Providers · License 046.010012 (IL) Secondary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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

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 Phuong Nguyen?

Phuong 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-10.