NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thao Pham-Diaz, O.D.

Optometrist in Riverside, CA · enumerated 2007 · practices at Thao-Thanh Pham Od Inc.

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

National Provider Identifier

1346378114

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Thao Pham-Diaz
Credential O.D.
Sex Female
Practice address 6160 Arlington Ave Ste C1, Riverside, CA, 92504
Phone (951) 977-8635
Enumeration date Mar 1, 2007
Last updated in NPPES Jan 5, 2022

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 11729 (CA) Secondary
152W00000X Optometrist Eye and Vision Services Providers · License 11729T (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

What is the NPI number for Thao Pham-Diaz?
The National Provider Identifier (NPI) for Thao Pham-Diaz is 1346378114, a Type 1 (individual) record in the CMS NPPES registry.
Where does Thao Pham-Diaz practice?
The practice location on file with NPPES is in Riverside, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-05.