Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Trinnin Olsen, PSYD
Clinical Psychologist in Corona, CA · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1811363138
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Registry record
Entity type Individual (Type 1)
Name Dr. Trinnin Olsen
Credential PSYD
Sex Female
Practice address 280 Teller St, Corona, CA, 92879
Phone (909) 825-7084
Enumeration date Aug 20, 2015
Last updated in NPPES Jul 22, 2025
Taxonomy & licenses
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY32367 (CA) Primary
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice.
About the PSYD 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.
Frequently asked questions
What is the NPI number for Trinnin Olsen?
The National Provider Identifier (NPI) for Trinnin Olsen is 1811363138, a Type 1 (individual) record in the CMS NPPES registry.
Where does Trinnin Olsen practice?
The practice location on file with NPPES is in Corona, 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 2025-07-22.