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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JUSTIN DONALD O'BRIEN LCSW
NPI 1982393955
Social Worker - Clinical in Billings, MT

Active since May 04, 2023
2243 MODERA AVE, BILLINGS, MT 59105(913) 982-6802 Get Directions Write a Review

NPPES record last updated: September 17, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Sep 17, 2026, May 4, 2023 (2 updates tracked since 2023).

About Justin Donald O'brien Lcsw NPPES

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

JUSTIN DONALD O'BRIEN LCSW (NPI 1982393955) is an individual clinical provider in Billings, Montana, licensed in Montana (BBH-LCSW-LIC-88120) and active in the NPI registry since May 2023.

NPPES Registry Identity

NPI1982393955
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameJUSTIN DONALD O'BRIENCredential: LCSW
Location Address2243 MODERA AVEBillings, MT 59105-5712
Mailing Address2243 Modera AveBillings, MT 59105-5712
Phone(913) 982-6802
Sole ProprietorYes
Enumeration DateMay 4, 2023
Last NPPES UpdateSeptember 17, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 17, 2026
✔ NPI 1982393955 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 MT · BBH-LCSW-LIC-88120
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.
2243 MODERA AVE, Billings, MT 59105
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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 Justin O'brien's NPI number?

The NPI number for Justin O'brien is 1982393955. It was assigned to this individual provider in the NPPES registry on May 4, 2023.

Where is Justin O'brien located?

Justin O'brien practices at 2243 Modera Ave, Billings, MT 59105. The listed phone number is (913) 982-6802.

What is Justin 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 Justin O'brien was last updated on September 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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.