Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katie Medina Diaz

Behavior Technician in Winters, CA · enumerated 2025.

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

National Provider Identifier

1538956495

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Registry record

Entity type Individual (Type 1)

Name Katie Medina Diaz

Sex Female

Practice address 801 Lincoln St, Winters, CA, 95694

Phone (530) 554-7402

Enumeration date Apr 23, 2025

Last updated in NPPES Apr 23, 2025

Taxonomy & licenses

106S00000X Behavior Technician 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Katie Medina Diaz practice?

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

What is the NPI number for Katie Medina Diaz?

The National Provider Identifier (NPI) for Katie Medina Diaz is 1538956495, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-23.