Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sidney Alexandria Nguyen, OD

Optometrist in Livermore, CA · enumerated 2025 · practices at Accuvision Eyecare Optometry.

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

National Provider Identifier

1285500769

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Registry record

Entity type Individual (Type 1)

Name Sidney Alexandria Nguyen

Credential OD

Sex Female

Practice address 2580 Old 1st St, Livermore, CA, 94550

Phone (925) 449-8188

Enumeration date Oct 13, 2025

Last updated in NPPES Oct 13, 2025

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 36135 (CA) Primary

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 NPI 1285500769 active?

Yes, as of the latest NPPES snapshot, NPI 1285500769 is active (record last updated 2025-10-13).

How do I verify Sidney Nguyen's NPI record?

Cross-check NPI 1285500769 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Viyada Michelsen Optometrist · Livermore, CA NPI 1740398296 Analyn Dizon Optometrist · Livermore, CA NPI 1851600373 Accuvision Eyecare Optometry Optometrist · Livermore, CA NPI 1356756464 Aaron Lee Optometrist · Livermore, CA NPI 1275252355

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-13.