Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ashton Harris Hallahan, LCSW, MPH, CCM

Clinical Social Worker in National City, CA · enumerated 2018 · practices at Volunteers of America, Southwest California, Incorporated.

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

National Provider Identifier

1285116558

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Registry record

Entity type Individual (Type 1)

Name Ashton Harris Hallahan

Credential LCSW, MPH, CCM

Sex Female

Practice address 2300 E 7th St, National City, CA, 91950

Phone (619) 791-2730

Enumeration date Sep 4, 2018

Last updated in NPPES Mar 17, 2026

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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 Ashton Hallahan?

The National Provider Identifier (NPI) for Ashton Hallahan is 1285116558, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ashton Hallahan practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-17.