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

Leah J Besen, LCSW

Individual provider Clinical Social Worker · NPI 1932331535

Leah J Besen, LCSW is a Clinical Social Worker in LA Mesa, California. Licensed in California. Registered with an NPI since 2009.

Licensed in
CA
In the registry since
2009
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

4990 Williams Ave
LA Mesa, CA 91941-3409
Phone: (619) 668-4263
Fax: (619) 698-1665
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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 24558 (CA)

Record details

NPI number1932331535
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorNo
NPI enumeratedAugust 14, 2009
Last updated in NPPESAugust 14, 2009

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