Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Alicia Castillo

Registered Nurse in Fresno, CA · enumerated 2007.

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

National Provider Identifier

1558589564

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Registry record

Entity type Individual (Type 1)

Name Ms. Alicia Castillo

Sex Female

Practice address 1221 Fulton Mall, Fresno, CA, 93721

Phone (559) 445-3449

Fax (559) 445-3370

Enumeration date Apr 23, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 487276 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Alicia Castillo?

The National Provider Identifier (NPI) for Alicia Castillo is 1558589564, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alicia Castillo practice?

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

Other providers at this practice address

Browse all →

Eleana Phillips Physical Therapist · Fresno, CA NPI 1396711784 Gail Newel Obstetrics & Gynecology Physician · Fresno, CA NPI 1912962044 County of Fresno Clinical Medical Laboratory · Fresno, CA NPI 1265514210 County of Fresno State or Local Public Health Clinic/Center · Fresno, CA NPI 1174606420 County of Fresno State or Local Public Health Clinic/Center · Fresno, CA NPI 1093898348 Kenneth Bird Public Health & General Preventive Medicine Physician · Fresno, CA NPI 1124193388 Scott Hays Registered Nurse · Fresno, CA NPI 1851443949 Fernando Gonzalez-Velez Registered Nurse · Fresno, CA NPI 1104978212

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.