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

Brendan O'Connell, LCSW

Individual provider Clinical Social Worker · NPI 1669937397

Brendan O'Connell, LCSW is a Clinical Social Worker in East Islip, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2019
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

55 Carleton Ave Ste 5
East Islip, NY 11730-2133
Phone: (631) 579-3503
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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 085772 (NY)

Record details

NPI number1669937397
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedFebruary 6, 2019
Last updated in NPPESFebruary 6, 2019
Mailing address280 Bay Ave, Patchogue, NY 11772-4019

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