Karen O'Brien, L.C.S.W.
Clinical Social Worker · Derby, CT
Karen O'Brien, L.C.S.W. is a clinical social worker with a practice address in Derby, Connecticut, and NPI 1700243490, issued on Jan 26, 2016. Check the license (Connecticut 012155, as entered in NPPES) with the Connecticut board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Karen O'Brien
- Credential
- L.C.S.W.
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License numbers
- 012155 CT
MSW.003114 CT
Self-reported in NPPES; status is on the state search - Practice location
- 11 Hickory RD, Derby, CT 06418
- Phone
- (203) 581-2685
- Enumerated
- Jan 26, 2016
- Record last updated
- Jan 4, 2023
- Medicare enrollment
- Enrolled (PECOS I20260414001119); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 7,729 in Connecticut → Look up another NPI →
Verify Karen O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 012155Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Karen O'Brien among 7,729 clinical social worker records in Connecticut
Karen O'Brien, L.C.S.W. is one of 7,729 clinical social worker records with a practice address in Connecticut. 15% 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 2016, is newer than 54% of them.
- NPI issued2016 · 54% of these records are older, 42% newer
- In a Medicare fileNo · 15% of these records are
- In the CMS Doctors and Clinicians fileYes · 23% of these records are
- Graduated2014 · median 2009 among the 1,784 with a school on file
- Record last updated2023 · 59% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
46 clinical social worker records list a practice address in Derby
They are 46 of the 453 NPPES records with a practice address in Derby, and 7,729 clinical social worker records in Connecticut. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,729 in Connecticut → Every provider in Derby → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Sarah Beard, LCSWDerby, CT 064181063665370
- Julianne Cioffi-Smith, LCSWDerby, CT 064181174776363
- Pamela Crepps, LCSWDerby, CT 064181902057268
- Patricia Donati, LCSWDerby, CT 064181477637403
- Debbie Douglas, LCSWDerby, CT 064181912167164
- Jennifer Fairchild, LCSWDerby, CT 064181821282880
- Julie Guilmette, LCSWDerby, CT 064181255582508
- Kimberly Kozlowski, LCSWDerby, CT 064181821295817
Common questions
What is Karen O'Brien, L.C.S.W.'s NPI number?
Karen O'Brien, L.C.S.W.'s National Provider Identifier (NPI) is 1700243490, issued on Jan 26, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Karen O'Brien, L.C.S.W. located?
The NPPES record lists a practice address at 11 Hickory RD, Derby, CT, 06418. Phone: (203) 581-2685. Providers update this record themselves, so call before visiting.
How can I verify Karen O'Brien, L.C.S.W.'s license?
NPPES lists Connecticut license number 012155, as entered by the provider. Search the Connecticut 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.