Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Crystal Ann Diaz, M.A.

Behavior Analyst in San Antonio, TX · enumerated 2007.

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

National Provider Identifier

1245376508

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Registry record

Entity type Individual (Type 1)

Name Ms. Crystal Ann Diaz

Credential M.A.

Sex Female

Practice address 1020 Central Pkwy S, San Antonio, TX, 78232

Phone (210) 798-2273

Fax (210) 495-1479

Enumeration date Jan 30, 2007

Last updated in NPPES Mar 28, 2022

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 24950 (TX) Secondary

103K00000X Behavior Analyst Behavioral Health & Social Service Providers 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

How do I verify Crystal Diaz's NPI record?

Cross-check NPI 1245376508 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1245376508 active?

Yes, as of the latest NPPES snapshot, NPI 1245376508 is active (record last updated 2022-03-28).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-28.