Grant David Clarke, LCSW
Clinical Social Worker · Fullerton, CA
Grant David Clarke, LCSW is a clinical social worker with a practice address in Fullerton, California, and NPI 1689812265, issued on Feb 4, 2009. Check the license (California LCS24617, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Grant David Clarke
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- LCS24617 CA
Self-reported in NPPES; status is on the state search - Practice location
- 140 E Commonwealth Ave Ste 101, Fullerton, CA 92832
- Phone
- (714) 773-4111
- Enumerated
- Feb 4, 2009
- Record last updated
- Jul 28, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (714) 773-4222
- Medicare enrollment
- Enrolled (PECOS I20181205003325); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 36,261 in California → Look up another NPI →
Also registered at 140 E Commonwealth Ave Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Megan Jimenez, LMFTMarriage & Family Therapist1891035259
- Parool Patel, MDPsychiatry Physician1740489764
- Shabnam ShahriyariPhysician Assistant1871258020
Verify Grant David Clarke in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license LCS24617Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Sunny Hills Behavioral Health IncFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Grant David Clarke among 36,261 clinical social worker records in California
Grant David Clarke, LCSW is one of 36,261 clinical social worker records with a practice address in California. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 28% of them.
- NPI issued2009 · 28% of these records are older, 69% newer
- In a Medicare fileYes · 6% of these records are
- In the CMS Doctors and Clinicians fileYes · 11% of these records are
- Graduated2002 · median 2012 among the 4,008 with a school on file
- Record last updated2020 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
116 clinical social worker records list a practice address in Fullerton
They are 116 of the 5,437 NPPES records with a practice address in Fullerton, and 36,261 clinical social worker records in California.
All 36,261 in California → Every provider in Fullerton → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Jonathan Aspuria, LCSWFullerton, CA 928321467961557
- Margit Bane, L.C.S.W.Fullerton, CA 928321326339227
- Dennis Durby, M.S.W.Fullerton, CA 928321003986902
- Melissa Goldman, LCSWFullerton, CA 928321235516634
- Valerie Handlers, MSWFullerton, CA 928321134326531
- Martha Hurtado- GarciaFullerton, CA 928321619316312
- Brenda Lapinid, LCSWFullerton, CA 928321083116289
- Mark Lawrenz, LCSWFullerton, CA 928321689768871
Common questions
What is Grant David Clarke, LCSW's NPI number?
Grant David Clarke, LCSW's National Provider Identifier (NPI) is 1689812265, issued on Feb 4, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Grant David Clarke, LCSW located?
The NPPES record lists a practice address at 140 E Commonwealth Ave Ste 101, Fullerton, CA, 92832. Phone: (714) 773-4111. Providers update this record themselves, so call before visiting.
How can I verify Grant David Clarke, LCSW's license?
NPPES lists California license number LCS24617, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.