Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Cassidy Erbst
Psychologist in Ontario, CA · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1003652520
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Registry record
Entity type Individual (Type 1)
Name Cassidy Erbst
Sex Female
Practice address 3350 Shelby St Ste 200, Ontario, CA, 91764
Phone (909) 935-2385
Enumeration date Jul 3, 2024
Last updated in NPPES Jul 3, 2024
Taxonomy & licenses
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.
Frequently asked questions
How do I verify Cassidy Erbst's NPI record?
Cross-check NPI 1003652520 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1003652520 active?
Yes, as of the latest NPPES snapshot, NPI 1003652520 is active (record last updated 2024-07-03).
Other providers at this practice address
Browse all → Gregory Crawford Clinical Neuropsychologist · Ontario, CA NPI 1427310937 Paul Allen Marriage & Family Therapist · Ontario, CA NPI 1760847610 David Dean Speech-Language Pathologist · Ontario, CA NPI 1538679105 Ndidi Okafor Behavior Technician · Ontario, CA NPI 1700371655 Jesse Perez Behavior Technician · Ontario, CA NPI 1902440332 Mae Belene Vital Speech-Language Pathologist · Ontario, CA NPI 1285279968 Delicacies of the Heart Clinical Social Worker · Ontario, CA NPI 1508499807 Key Communication, Speech & Language Services, Inc. Hearing and Speech Clinic/Center · Ontario, CA NPI 1225663958
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-03.