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

Alejandro Diaz

Psychologist in Santa Ana, CA · enumerated 2020 · practices at Child Guidance Center, Inc..

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

National Provider Identifier

1821610650

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Registry record

Entity type Individual (Type 1)

Name Alejandro Diaz

Sex Male

Practice address Santa Ana, CA, 92701

Phone (714) 953-4455

Enumeration date May 14, 2020

Last updated in NPPES Jan 9, 2025

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

Taxonomy & licenses

103T00000X Psychologist 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

What specialty is Alejandro Diaz?

Alejandro Diaz is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-09.