Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Daniel Castro

Registered Respiratory Therapist in Santa Rosa, CA · enumerated 2019.

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

National Provider Identifier

1134685951

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Registry record

Entity type Individual (Type 1)

Name Daniel Castro

Sex Male

Practice address 401 Bicentennial Way, Santa Rosa, CA, 95403

Phone (707) 393-4000

Enumeration date Feb 17, 2019

Last updated in NPPES Feb 17, 2019

Taxonomy & licenses

227900000X Registered Respiratory Therapist Respiratory, Developmental, Rehabilitative and Restorative 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

Where does Daniel Castro practice?

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

What is the NPI number for Daniel Castro?

The National Provider Identifier (NPI) for Daniel Castro is 1134685951, 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 2019-02-17.