Katherine Thomas Black, LCSW
Clinical Social Worker · Los Angeles, CA
Katherine Thomas Black, LCSW is a clinical social worker with a practice address in Los Angeles, California, and NPI 1811014830, issued on Mar 23, 2007. Check the license (California LCS25495, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Katherine Thomas Black
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- LCS25495 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12099 W Washington Blvd, Los Angeles, CA 90066
- Phone
- (310) 751-1171
- Enumerated
- Mar 23, 2007
- Record last updated
- Aug 17, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (310) 313-7652
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 36,261 in California → Look up another NPI →
Also registered at 12099 W Washington Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine Thomas Black in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license LCS25495Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Katherine Thomas Black among 36,261 clinical social worker records in California
Katherine Thomas Black, 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 not. Its NPI, issued in 2007, is newer than 9% of them.
- NPI issued2007 · 9% of these records are older, 76% newer
- In a Medicare fileNo · 6% of these records are
- In the CMS Doctors and Clinicians fileNo · 11% of these records are
- Record last updated2009 · 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).
4,806 clinical social worker records list a practice address in Los Angeles
They are 4,806 of the 69,537 NPPES records with a practice address in Los Angeles, and 36,261 clinical social worker records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 36,261 in California → Every provider in Los Angeles → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Karen Barzilay, LVN, LCSWLos Angeles, CA 900661457481616
- Elena Bell, LCSWLos Angeles, CA 900661770611543
- Darls Centola, LCSWLos Angeles, CA 900661861551053
- Gwendolyn Davis, LCSWLos Angeles, CA 900661023195252
- Sergio Gueller, LCSWLos Angeles, CA 900661225175888
- Melanie Harewood, M.S.W.Los Angeles, CA 900661649351008
- Susan Horn, L.C.S.W.Los Angeles, CA 900661003888652
- Barbara Jacobs Fistanic, LCSWLos Angeles, CA 900661407938103
Common questions
What is Katherine Thomas Black, LCSW's NPI number?
Katherine Thomas Black, LCSW's National Provider Identifier (NPI) is 1811014830, issued on Mar 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Thomas Black, LCSW located?
The NPPES record lists a practice address at 12099 W Washington Blvd, Los Angeles, CA, 90066. Phone: (310) 751-1171. Providers update this record themselves, so call before visiting.
How can I verify Katherine Thomas Black, LCSW's license?
NPPES lists California license number LCS25495, 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. 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.