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Michael Paul Castro, RNFA

Registered Nurse First Assistant in Los Alamitos, CA · enumerated 2007.

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

National Provider Identifier

1316145261

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Registry record

Entity type Individual (Type 1)
Name Michael Paul Castro
Credential RNFA
Sex Male
Practice address 10921 Cherry St Ste 100, Los Alamitos, CA, 90720
Phone (562) 795-5600
Fax (562) 795-5602
Enumeration date Jul 3, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

163WR0006X Registered Nurse First Assistant Nursing Service Providers · License 545956 (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 Michael Castro practice?
The practice location on file with NPPES is in Los Alamitos, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Michael Castro?
The National Provider Identifier (NPI) for Michael Castro is 1316145261, 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 2007-07-08.