Individual provider · Type 1 NPI

Timothy J. O'Brien, PhD

Clinical Neuropsychologist · Fountain Valley, CA

NPI number 1275924557 Active

Practice location

10061 Talbert Ave # 234
Fountain Valley, CA 92708-5159

Mailing address

6285 E Spring St # 598
Long Beach, CA 90808-4020

Other practice locations

  • 2708 Ostrom Ave, Long Beach, CA 90815-1603 · (949) 526-9504

Specialties and licenses

TaxonomyCodeLicense
Clinical Neuropsychologist Primary 103G00000XPSY26611 (CA)
Clinical Psychologist 103TC0700XPSY26611 (CA)

Clinical Neuropsychologist: A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems.

Another provider at this address

About NPI 1275924557

Timothy J. O'Brien, PhD's National Provider Identifier is 1275924557, issued on Feb 9, 2015. The primary taxonomy on file is Clinical Neuropsychologist (103G00000X), and the practice location is in Fountain Valley, CA. The record was last updated on Nov 14, 2025.