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

Julia Sumner Yarrington Hartley, PHD

Individual provider Clinical Psychologist · NPI 1548085210

Julia Sumner Yarrington Hartley, PHD is a Clinical Psychologist in Santa Monica, California. Licensed in California. Registered with an NPI since 2024.

Licensed in
CA
In the registry since
2024
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

1201 Montana Ave Ste 201
Santa Monica, CA 90403-1762
Phone: (585) 402-3994
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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 36378 (CA)

Record details

NPI number1548085210
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedNovember 18, 2024
Last updated in NPPESDecember 5, 2025
Certification dateDecember 5, 2025

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