ELIZA LYNN O'BRIEN LICSW
NPI 1669807459
Social Worker - Clinical in Chelmsford, MA

Active since September 11, 2013
139 BILLERICA RD UNIT A-1, CHELMSFORD, MA 01824(617) 780-9510 Get Directions Write a Review

NPPES record last updated: May 24, 2023. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Eliza Lynn O'brien Licsw NPPES

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

ELIZA LYNN O'BRIEN LICSW (NPI 1669807459) is an individual clinical provider in Chelmsford, Massachusetts, licensed in Massachusetts (120761) and active in the NPI registry since September 2013.

NPPES Registry Identity

NPI1669807459
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameELIZA LYNN O'BRIENCredential: LICSW
Location Address139 BILLERICA RD UNIT A-1Chelmsford, MA 01824-3633
Mailing Address139 Billerica Rd Unit A-1Chelmsford, MA 01824-3633 · (617) 780-9510
Sole ProprietorYes
Enumeration DateSeptember 11, 2013
Last NPPES UpdateMay 24, 2023
NPPES CertifiedMay 24, 2023
NPI 1669807459 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License Licensed in MA · 120761
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.
139 BILLERICA RD UNIT A-1, Chelmsford, MA 01824

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 Eliza O'brien's NPI number?

The NPI number for Eliza O'brien is 1669807459. It was assigned to this individual provider in the NPPES registry on September 11, 2013.

Where is Eliza O'brien located?

Eliza O'brien practices at 139 Billerica Rd Unit A-1, Chelmsford, MA 01824. The listed phone number is (617) 780-9510.

What is Eliza 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 Eliza O'brien was last updated on May 24, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.