Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cassandra Caitlin Seidler, LCSW

Clinical Social Worker in San Juan Capistrano, CA · enumerated 2023.

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

National Provider Identifier

1962118414

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Registry record

Entity type Individual (Type 1)

Name Cassandra Caitlin Seidler

Credential LCSW

Sex Female

Practice address 27128 Paseo Espada Ste 1522a, San Juan Capistrano, CA, 92675

Phone (949) 228-6440

Enumeration date Jan 27, 2023

Last updated in NPPES Apr 14, 2024

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCSW117734 (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

What is the NPI number for Cassandra Seidler?

The National Provider Identifier (NPI) for Cassandra Seidler is 1962118414, a Type 1 (individual) record in the CMS NPPES registry.

Where does Cassandra Seidler practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-14.