Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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MS. Theresa O'Neill, LCSW

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1467625947

MS. Theresa O'Neill, LCSW is an Addiction (Substance Use Disorder) Counselor in Hicksville, New York. Practices as a sole proprietor. Registered with an NPI since 2008.

In the registry since
2008
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

950 S Oyster Bay Rd
Hicksville, NY 11801-3510
Phone: (516) 822-4060
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X

Record details

NPI number1467625947
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedApril 7, 2008
Last updated in NPPESOctober 22, 2013

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