NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cassandra Omara Kostendt

Counselor in San Marcos, CA · enumerated 2013 · practices at Socal Therapyworks, A Marriage and Family Therapy Corporation.

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

National Provider Identifier

1225475882

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Cassandra Omara Kostendt
Sex Female
Practice address 541 Ledge St, San Marcos, CA, 92078
Phone (760) 583-2524
Enumeration date May 22, 2013
Last updated in NPPES Aug 17, 2023

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary
101Y00000X Counselor Behavioral Health & Social Service Providers Primary

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 Kostendt?
The National Provider Identifier (NPI) for Cassandra Kostendt is 1225475882, a Type 1 (individual) record in the CMS NPPES registry.
Where does Cassandra Kostendt practice?
The practice location on file with NPPES is in San Marcos, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-17.