Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Tham Nguyen, O.D.P.A

Q: What type of organization is Tham Nguyen, O.D.P.A?

Tham Nguyen, O.D.P.A is registered in NPPES as a Optometrist (its primary provider taxonomy).

Optometrist in San Antonio, TX · enumerated 2006 · authorized official Tham Nguyen, Director.

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

National Provider Identifier

1851476394

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Registry record

Entity type Organization (Type 2)

Legal business name Tham Nguyen, O.D.P.A

Other name <Unavail>

Practice address 11311 Bandera Rd, San Antonio, TX, 78250

Phone (210) 256-2020

Fax (210) 256-2025

Enumeration date Oct 25, 2006

Last updated in NPPES Oct 27, 2010

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 6832TG (TX) Primary

Authorized official

Name Tham Nguyen

Title Director

Phone (210) 256-2020

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

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Tham Nguyen, O.D.P.A?

Tham Nguyen, O.D.P.A is registered in NPPES as a Optometrist (its primary provider taxonomy).

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-10-27.