Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Caitlin O'Brien-Masonis, PSYD

Individual provider Clinical Psychologist · NPI 1508679846

Caitlin O'Brien-Masonis, PSYD is a Clinical Psychologist in Atascadero, California. Licensed in California. Registered with an NPI since 2025.

Licensed in
CA
In the registry since
2025
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

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Practice location Address checks out

10333 El Camino Real
Atascadero, CA 93422-5808
Phone: (805) 468-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY35616 (CA)

Record details

NPI number1508679846
Entity typeIndividual (Type 1)
GenderFemale
Credentials PSYD
Sole proprietorNo
NPI enumeratedJanuary 30, 2025
Last updated in NPPESFebruary 5, 2025
Certification dateFebruary 5, 2025

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