Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thuy Thanh Nguyen

Optometrist in Newington, CT · enumerated 2020.

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

National Provider Identifier

1811517899

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Registry record

Entity type Individual (Type 1)

Name Thuy Thanh Nguyen

Sex Female

Practice address 555 Willard Ave, Newington, CT, 06111

Phone (860) 667-6742

Enumeration date Apr 20, 2020

Last updated in NPPES Mar 6, 2023

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 3187 (CT) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 10023 (TX) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 3878-35 (WI) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 5469 (MA) Primary

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 Thuy Nguyen?

Thuy 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-06.