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

MS. Kathleen O'Neill, LMSW, CASAC

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1477614766

MS. Kathleen O'Neill, LMSW, CASAC is an Addiction (Substance Use Disorder) Counselor in East Islip, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2006
Specialties on file
2
What do these letters mean?
LMSW — Licensed Master Social Worker
A master's-level social worker, usually practising under supervision.

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Practice location Address checks out

265 E Main Street Tranquility Counseling
East Islip, NY 11730
Phone: (631) 732-4350
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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 067429 (NY)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence 7417 (NY)

Record details

NPI number1477614766
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMSW , CASAC
Sole proprietorYes
NPI enumeratedDecember 12, 2006
Last updated in NPPESJuly 16, 2007

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