Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sonia Alvarez

Adult Companion in Hollister, CA · enumerated 2007.

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

National Provider Identifier

1356557615

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Registry record

Entity type Individual (Type 1)

Name Sonia Alvarez

Sex Female

Practice address 1131 San Felipe Rd, Hollister, CA, 95023

Phone (831) 636-4020

Fax (831) 636-4025

Enumeration date May 15, 2007

Last updated in NPPES Aug 13, 2025

Taxonomy & licenses

171M00000X Case Manager/Care Coordinator Other Service Providers Secondary

372600000X Adult Companion Nursing Service Related 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 Sonia Alvarez practice?

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

What is the NPI number for Sonia Alvarez?

The National Provider Identifier (NPI) for Sonia Alvarez is 1356557615, 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 2025-08-13.