Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kathleen Ann Butler, LCSW

Clinical Social Worker in Livermore, CA · enumerated 2009.

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

National Provider Identifier

1538302708

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Registry record

Entity type Individual (Type 1)

Name Kathleen Ann Butler

Credential LCSW

Sex Female

Practice address 4951 Arroyo Rd, Va Hospital Liv/117p, Livermore, CA, 94550

Phone (650) 493-5000

Fax (925) 449-6523

Enumeration date Apr 17, 2009

Last updated in NPPES Jul 11, 2014

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Secondary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary

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 Kathleen Butler?

The National Provider Identifier (NPI) for Kathleen Butler is 1538302708, a Type 1 (individual) record in the CMS NPPES registry.

Where does Kathleen Butler practice?

The practice location on file with NPPES is in Livermore, 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 2014-07-11.