Claire Brennan, LCSW
Clinical Social Worker · Newton, MA
Claire Brennan, LCSW is a clinical social worker with a practice address in Newton, Massachusetts, and NPI 1154600666, issued on Aug 15, 2011. Check the license (Massachusetts 218148, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Claire Brennan
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 218148 MA
Self-reported in NPPES; status is on the state search - Practice location
- 64 Eldredge Street, Newton, MA 02458
- Phone
- (617) 969-4925
- Enumerated
- Aug 15, 2011
- Record last updated
- Jun 1, 2023
- Medicare enrollment
- Enrolled (PECOS I20250219002259); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 17,815 in Massachusetts → Look up another NPI →
Also registered at 64 Eldredge Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kathleen BarrettMental Health Counselor1003197872
Verify Claire Brennan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 218148Check 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
- Riverside Community Care IncNewton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Claire Brennan among 17,815 clinical social worker records in Massachusetts
Claire Brennan, LCSW is one of 17,815 clinical social worker records with a practice address in Massachusetts. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 42% of them.
- NPI issued2011 · 42% of these records are older, 55% newer
- In a Medicare fileYes · 8% of these records are
- In the CMS Doctors and Clinicians fileYes · 17% of these records are
- Graduated2012 · median 2004 among the 3,059 with a school on file
- Record last updated2023 · 68% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
270 clinical social worker records list a practice address in Newton
They are 270 of the 2,975 NPPES records with a practice address in Newton, and 17,815 clinical social worker records in Massachusetts.
All 17,815 in Massachusetts → Every provider in Newton → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Linda Berkowitz, LICSW,ACSW,BCDNewton, MA 024581669488177
- Randy Blume, MSWNewton, MA 024581790848034
- Ellen Glazer, LICSWNewton, MA 024581689776676
- Carey Jacobs, LICSWNewton, MA 024581578599015
- Jerry Juliano, LICSWNewton, MA 024581861598898
- Suzanne Kearney, LICSWNewton, MA 024581992863203
- James McCauley, MSWNewton, MA 024581376601385
- Rachel Nenner-Payton, LICSWNewton, MA 024581023181914
Common questions
What is Claire Brennan, LCSW's NPI number?
Claire Brennan, LCSW's National Provider Identifier (NPI) is 1154600666, issued on Aug 15, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Claire Brennan, LCSW located?
The NPPES record lists a practice address at 64 Eldredge Street, Newton, MA, 02458. Phone: (617) 969-4925. Providers update this record themselves, so call before visiting.
How can I verify Claire Brennan, LCSW's license?
NPPES lists Massachusetts license number 218148, as entered by the provider. Search the Massachusetts 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.