Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Allison Leigh Corso, MSW

Clinical Social Worker in Altadena, CA · enumerated 2007.

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

National Provider Identifier

1831388099

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Registry record

Entity type Individual (Type 1)

Name Allison Leigh Corso

Credential MSW

Sex Female

Practice address Altadena, CA, 91001

Phone (626) 798-6793

Enumeration date Oct 23, 2007

Last updated in NPPES Oct 23, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License ASW 22168 (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 Allison Corso practice?

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

What is the NPI number for Allison Corso?

The National Provider Identifier (NPI) for Allison Corso is 1831388099, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-23.