Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Colleen Marie Cassidy, LCSW

Clinical Social Worker in Anaheim, CA · enumerated 2006 · practices at Oasis.

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

National Provider Identifier

1619081981

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Registry record

Entity type Individual (Type 1)

Name Colleen Marie Cassidy

Credential LCSW

Sex Female

Practice address 1900 E La Palma Ave, Suite 101, Anaheim, CA, 92805

Phone (714) 399-3480

Enumeration date Aug 17, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCS19167 (CA) 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

Where does Colleen Cassidy practice?

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

What is the NPI number for Colleen Cassidy?

The National Provider Identifier (NPI) for Colleen Cassidy is 1619081981, 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 2007-07-08.