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

Mr. Grant David Clarke, LCSW

Individual provider Clinical Social Worker · NPI 1689812265

Mr. Grant David Clarke, LCSW is a Clinical Social Worker in Fullerton, California. Qualified in 2002, 24 years ago. Practices with Sunny Hills Behavioral Health Inc, a 7-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
24
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

140 E Commonwealth Ave Ste 101
Fullerton, CA 92832-1905
Phone: (714) 773-4111
Fax: (714) 773-4222
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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 LCS24617 (CA)

Record details

NPI number1689812265
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorNo
NPI enumeratedFebruary 4, 2009
Last updated in NPPESJuly 28, 2020
Certification dateJuly 28, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice Sunny Hills Behavioral Health Inc — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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