Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Dorothy Jean Castillo

Counselor in Santa Ana, CA · enumerated 2007.

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

National Provider Identifier

1558553131

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Registry record

Entity type Individual (Type 1)

Name Ms. Dorothy Jean Castillo

Sex Female

Practice address 1615 French St, Ste.#102, Santa Ana, CA, 92701

Phone (714) 824-8150

Fax (714) 824-8151

Enumeration date Aug 16, 2007

Last updated in NPPES Aug 16, 2007

Taxonomy & licenses

101Y00000X Counselor 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

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 Dorothy Castillo?

Dorothy Castillo is registered in NPPES with the primary taxonomy of Counselor. 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 2007-08-16.