Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Justin Donald O'Brien, LCSW

Individual provider Clinical Social Worker · NPI 1982393955

Justin Donald O'Brien, LCSW is a Clinical Social Worker in Billings, Montana. Practices as a sole proprietor. Licensed in Montana.

Licensed in
MT
In the registry since
2023
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

2243 Modera Ave
Billings, MT 59105-5712
Phone: (913) 982-6802
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence BBH-LCSW-LIC-88120 (MT)

Record details

NPI number1982393955
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedMay 4, 2023
Last updated in NPPESSeptember 17, 2026
Certification dateSeptember 17, 2026

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