Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Kaitlin Marie O'Brien, PHD

Individual provider Clinical Psychologist · NPI 1194468439

Dr. Kaitlin Marie O'Brien, PHD is a Clinical Psychologist in Costa Mesa, California. Works from 2 locations. Licensed in California.

Licensed in
CA
In the registry since
2022
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

940 S Coast Dr Ste 225
Costa Mesa, CA 92626-7757
Phone: (949) 743-1457
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 625 S Fair Oaks Ave Ste 325, Pasadena, CA 91105-2675 — (626) 535-9344

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY35098 (CA)

Record details

NPI number1194468439
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedApril 14, 2022
Last updated in NPPESAugust 13, 2024
Certification dateAugust 13, 2024

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