Provider Profile
Mariah R. O'Brien, MSW, LCSW is a clinical social worker based in Brookline, MA. Mariah is also listed as specializing in mental health counselor.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
1269 BEACON ST
Brookline, MA 02446
Mariah R. O'Brien, MSW is a clinical social worker in Brookline, MA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Mariah R. O'Brien, MSW is listed at 1269 Beacon St, Brookline, MA 02446. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (617) 232-1303. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Mariah R. O'Brien, MSW's National Provider Identifier is 1730602095. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Mariah R. O'Brien, MSW has 9+ years experience. Registered with an NPI since 2017. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Not yet. This profile is built from public federal data and has not been confirmed by Mariah R. O'Brien, MSW. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.