NPI Portal NPI Lookup & Verification

Allison Leigh Corso, MSW

Allison Leigh Corso is a Clinical Social Worker provider (Social Worker) practicing in Altadena, CA, registered in the NPPES registry with NPI 1831388099 since 2007.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1831388099
Entity type Individual (Type 1)
Name Allison Leigh Corso
Credential MSW
Sex Female
Practice address Altadena, CA, 91001
Phone 6267986793
Enumeration date 2007-10-23
Last updated in NPPES 2007-10-23

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

Taxonomy & licenses

Taxonomy code Specialty Primary License State
1041C0700X Clinical Social Worker Primary ASW 22168 CA
Copy-ready billing details
Provider: Allison Corso, MSW
NPI: 1831388099
Taxonomy: 1041C0700X (Clinical Social Worker)
Address: Altadena, CA, 91001

Other providers at this practice address

NPI Name Type Specialty Location
1013094895 Sandra Chavez Individual Marriage & Family Therapist Altadena, CA
1932240116 Armond Boldi Individual Marriage & Family Therapist Altadena, CA
1285769166 Adriana Caridad Individual Rehabilitation Practitioner Altadena, CA
1326173287 Aracely Sorrels Individual Clinical Social Worker Altadena, CA
1578698825 Doncella Mumolo Individual Marriage & Family Therapist Altadena, CA
1275669756 Elizabeth Parker Individual Marriage & Family Therapist Altadena, CA
1053443291 Aida Enciso Individual Marriage & Family Therapist Altadena, CA
1083738744 Cammie Jones Individual Clinical Social Worker Altadena, CA

Verify this record

Cross-check NPI 1831388099 against the authoritative CMS record: view Allison Leigh Corso on the official NPPES registry .

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 or validate an NPI number.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-10-23.