MRS. LESLIE R O'BRIEN MSW, LICSW
NPI 1497067631
Social Worker - Clinical in Lexington, MA

Active since July 03, 2010
52 WALTHAM ST, LEXINGTON, MA 02421(857) 263-3403 Get Directions Write a Review

NPPES record last updated: May 6, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mrs. Leslie R O'brien Msw, Licsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MRS. LESLIE R O'BRIEN MSW, LICSW (NPI 1497067631) is an individual clinical provider in Lexington, Massachusetts and active in the NPI registry since July 2010.

NPPES Registry Identity

NPI1497067631
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMRS. LESLIE R O'BRIENCredential: MSW, LICSW
Location Address52 WALTHAM STLexington, MA 02421-5407
Mailing Address34 Philbrick RdBrookline, MA 02445-6004 · (617) 232-4452
Sole ProprietorYes
Enumeration DateJuly 3, 2010
Last NPPES UpdateMay 6, 2025
NPPES CertifiedMay 6, 2025
NPI 1497067631 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
52 WALTHAM ST, Lexington, MA 02421

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Leslie O'brien's NPI number?

The NPI number for Leslie O'brien is 1497067631. It was assigned to this individual provider in the NPPES registry on July 3, 2010.

Where is Leslie O'brien located?

Leslie O'brien practices at 52 Waltham St, Lexington, MA 02421. The listed phone number is (857) 263-3403.

What is Leslie O'brien's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

When was this NPI record last updated?

The NPPES record for Leslie O'brien was last updated on May 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.