Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

MS. Mary Pat O'Brien, LCSW

Individual provider Clinical Social Worker · NPI 1598544371

MS. Mary Pat O'Brien, LCSW is a Clinical Social Worker in Peekskill, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
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

50 Dayton Ln Ste 205
Peekskill, NY 10566-2860
Phone: (914) 736-3371
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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 074831 (NY)

Record details

NPI number1598544371
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedSeptember 21, 2023
Last updated in NPPESSeptember 21, 2023
Certification dateSeptember 21, 2023

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