Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ana Castillo
Peer Specialist in San Diego, CA · enumerated 2026.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1891634705
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Registry record
Entity type Individual (Type 1)
Name Ana Castillo
Sex Female
Practice address 3737 Midway Dr, San Diego, CA, 92110
Phone (619) 985-8571
Enumeration date Mar 26, 2026
Last updated in NPPES Mar 26, 2026
Taxonomy & licenses
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.
Frequently asked questions
Where does Ana Castillo practice?
The practice location on file with NPPES is in San Diego, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Ana Castillo?
The National Provider Identifier (NPI) for Ana Castillo is 1891634705, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-26.