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

Ann O'Brien, LCSW

Individual provider Clinical Social Worker · NPI 1407972565

Ann O'Brien, LCSW is a Clinical Social Worker in Playa del Rey, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

8341 W Manchester Ave Apt 3
Playa del Rey, CA 90293-8136 Not confirmed with CMS for 17 years — call before visiting
Phone: (310) 210-4491
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence LCS 25232 (CA)

Record details

NPI number1407972565
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedMarch 21, 2007
Last updated in NPPESJune 10, 2009

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