Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ann Marie Diaz, LMT

Q: What is the NPI number for Ann Diaz?

The National Provider Identifier (NPI) for Ann Diaz is 1538907423, a Type 1 (individual) record in the CMS NPPES registry.

Massage Therapist in Laveen, AZ · enumerated 2024.

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

National Provider Identifier

1538907423

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Registry record

Entity type Individual (Type 1)

Name Ann Marie Diaz

Credential LMT

Sex Female

Practice address Laveen, AZ, 85339

Phone (623) 281-9484

Enumeration date Jul 16, 2024

Last updated in NPPES Aug 7, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

225700000X Massage Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License MT-29964 (AZ) 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 Ann Diaz practice?

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

What is the NPI number for Ann Diaz?

The National Provider Identifier (NPI) for Ann Diaz is 1538907423, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-07.