Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Grace Catherine Thomas, PA-C

Physician Assistant in Tustin, CA · enumerated 2024.

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

National Provider Identifier

1346005089

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Registry record

Entity type Individual (Type 1)

Name Grace Catherine Thomas

Credential PA-C

Sex Female

Practice address 17612 17th St, Tustin, CA, 92780

Phone (714) 243-5450

Enumeration date Feb 20, 2024

Last updated in NPPES Feb 20, 2024

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 63870 (CA) 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.

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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 Grace Thomas?

Grace Thomas is registered in NPPES with the primary taxonomy of Physician Assistant. 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 2024-02-20.