Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Dennis Charles Oleson, PSYCHOLOGIST
Psychologist in Chino, CA · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1487097093
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Registry record
Entity type Individual (Type 1)
Name Dr. Dennis Charles Oleson
Credential PSYCHOLOGIST
Sex Male
Practice address 14901 Central Ave, Chino, CA, 91710
Phone (909) 597-1821
Fax (971) 821-7044
Enumeration date Apr 12, 2013
Last updated in NPPES Apr 12, 2013
Taxonomy & licenses
103T00000X Psychologist Behavioral Health & Social Service Providers · License PSY15049 (CA) 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.
Frequently asked questions
Where does Dennis Oleson practice?
The practice location on file with NPPES is in Chino, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Dennis Oleson?
The National Provider Identifier (NPI) for Dennis Oleson is 1487097093, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Nicole Jensen Clinical Psychologist · Chino, CA NPI 1770551749 Jonathan Cho Internal Medicine Physician · Chino, CA NPI 1235175936 Kirk Torres Family Medicine Physician · Chino, CA NPI 1295881175 Jason Churchwell Clinical Psychologist · Chino, CA NPI 1609909068 Robert Clinton Internal Medicine Physician · Chino, CA NPI 1265566699 Jasmin Allen Clinical Social Worker · Chino, CA NPI 1104950880 Tuan Hoang Internal Medicine Physician · Chino, CA NPI 1013122761 Hoan Nguyen Internal Medicine Physician · Chino, CA NPI 1952591653
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-12.