Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Rebecca Castillo, SLP

Speech-Language Pathologist in Tucson, AZ · enumerated 2007.

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

National Provider Identifier

1326169111

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Registry record

Entity type Individual (Type 1)

Name Ms. Rebecca Castillo

Credential SLP

Sex Female

Practice address 1010 E 10th St, Tucson, AZ, 85719

Phone (520) 225-6410

Enumeration date Apr 2, 2007

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License SLPL 1506 (AZ) Primary

SLP · Speech-Language Pathologist: A licensed clinician treating speech, language, and swallowing disorders. About the SLP credential

Other identifiers

Identifier	Type	State	Issuer
648587	Medicaid	AZ	-

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 Rebecca Castillo practice?

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

What is the NPI number for Rebecca Castillo?

The National Provider Identifier (NPI) for Rebecca Castillo is 1326169111, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.