Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Rosalba Castellanos, BA

Speech-Language Assistant in Redondo Beach, CA · enumerated 2025.

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

National Provider Identifier

1588548531

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Registry record

Entity type Individual (Type 1)

Name Rosalba Castellanos

Credential BA

Sex Female

Practice address 2850 Artesia Blvd, Redondo Beach, CA, 90278

Phone (424) 275-9968

Enumeration date Aug 4, 2025

Last updated in NPPES Aug 4, 2025

Taxonomy & licenses

2355S0801X Speech-Language Assistant Speech, Language and Hearing Service Providers · License SPA9678 (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.

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Frequently asked questions

Where does Rosalba Castellanos practice?

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

What is the NPI number for Rosalba Castellanos?

The National Provider Identifier (NPI) for Rosalba Castellanos is 1588548531, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-04.