Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Ahmed Castro

Q: What is the NPI number for Ahmed Castro?

The National Provider Identifier (NPI) for Ahmed Castro is 1831406651, a Type 1 (individual) record in the CMS NPPES registry.

Case Manager/Care Coordinator in Lancaster, CA · enumerated 2010.

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

National Provider Identifier

1831406651

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Registry record

Entity type Individual (Type 1)

Name Mr. Ahmed Castro

Sex Male

Practice address 506 W Jackman St, Lancaster, CA, 93534

Phone (661) 726-2850

Enumeration date Sep 1, 2010

Last updated in NPPES Sep 1, 2010

Taxonomy & licenses

171M00000X Case Manager/Care Coordinator Other 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Ahmed Castro practice?

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

What is the NPI number for Ahmed Castro?

The National Provider Identifier (NPI) for Ahmed Castro is 1831406651, 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 2010-09-01.