Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine Tai, OD

Optometrist in Fremont, CA · enumerated 2020.

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

National Provider Identifier

1801429402

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Registry record

Entity type Individual (Type 1)

Name Katherine Tai

Credential OD

Sex Female

Practice address 46324 Warm Springs Blvd Unit 747, Fremont, CA, 94539

Phone (510) 490-2010

Enumeration date Feb 21, 2020

Last updated in NPPES Feb 21, 2020

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OPT34480TLG (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 Katherine Tai?

The National Provider Identifier (NPI) for Katherine Tai is 1801429402, a Type 1 (individual) record in the CMS NPPES registry.

Where does Katherine Tai practice?

The practice location on file with NPPES is in Fremont, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-21.