MR. JOHN JOSEPH O'BRIEN MSW
NPI 1740394477
Social Worker - Clinical in Baltimore, MD

Active since August 19, 2006
10 N GREENE ST, BALTIMORE, MD 21201(410) 605-7012 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mr. John Joseph O'brien Msw NPPES

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

MR. JOHN JOSEPH O'BRIEN MSW (NPI 1740394477) is an individual clinical provider in Baltimore, Maryland, licensed in Maryland (03699) and active in the NPI registry since August 2006.

NPPES Registry Identity

NPI1740394477
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMR. JOHN JOSEPH O'BRIENCredential: MSW
Location Address10 N GREENE STBaltimore, MD 21201-1524
Mailing Address416 Sunny View RdBel Air, MD 21014-5578 · (410) 605-7012
Sole ProprietorYes
Enumeration DateAugust 19, 2006
Last NPPES UpdateJuly 8, 2007
NPI 1740394477 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 MD · 03699
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.
10 N GREENE ST, Baltimore, MD 21201

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Dentist
10 N GREENE ST, 2-D-137
BALTIMORE, MD 21201
Social Worker
10 N GREENE ST
BALTIMORE, MD 21201
Emergency Medicine
10 N GREENE ST
BALTIMORE, MD 21201
Social Worker (Clinical)
10 N GREENE ST
BALTIMORE, MD 21201
Social Worker (Clinical)
10 N GREENE ST, BT/101/MC
BALTIMORE, MD 21201
Psychiatry & Neurology (Psychiatry)
10 N GREENE ST
BALTIMORE, MD 21201
Nurse Practitioner (Adult Health)
10 N GREENE ST, SURGERY SERVICE 112/S
BALTIMORE, MD 21201
Social Worker (Clinical)
10 N GREENE ST
BALTIMORE, MD 21201

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 John O'brien's NPI number?

The NPI number for John O'brien is 1740394477. It was assigned to this individual provider in the NPPES registry on August 19, 2006.

Where is John O'brien located?

John O'brien practices at 10 N Greene St, Baltimore, MD 21201. The listed phone number is (410) 605-7012.

What is John 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 John O'brien was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.