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

Individual provider Clinical Social Worker · NPI 1356696389

Joyann Thornhill, LCSW is a Clinical Social Worker in Costa Mesa, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2012
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

299 Broadway Ave
Costa Mesa, CA 92627
Phone: (703) 623-9460
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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 8506 (CA)

Record details

NPI number1356696389
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedJuly 16, 2012
Last updated in NPPESJuly 16, 2012

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