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

Holly Castro, CDAC CAS

Q: What is the NPI number for Holly Castro?

The National Provider Identifier (NPI) for Holly Castro is 1790225480, a Type 1 (individual) record in the CMS NPPES registry.

Addiction (Substance Use Disorder) Counselor in Citrus Heights, CA · enumerated 2017.

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

National Provider Identifier

1790225480

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Registry record

Entity type Individual (Type 1)

Name Holly Castro

Credential CDAC CAS

Sex Female

Practice address Citrus Heights, CA, 95621

Phone (916) 410-1294

Enumeration date Mar 1, 2017

Last updated in NPPES Mar 3, 2017

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

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License C16761214 (CA) 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

What is the NPI number for Holly Castro?

The National Provider Identifier (NPI) for Holly Castro is 1790225480, a Type 1 (individual) record in the CMS NPPES registry.

Where does Holly Castro practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-03.