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

Mrs. Nancy Dussel Gallagher, RN

Individual provider Addiction (Substance Use Disorder) Registered Nurse · NPI 1972993996

Mrs. Nancy Dussel Gallagher, RN is an Addiction (Substance Use Disorder) Registered Nurse in Smithtown, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2015
Specialties on file
2
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

See every abbreviation used in this directory →

Practice location Address checks out

475 Landing Ave
Smithtown, NY 11787
Phone: (631) 513-1937
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Nurse (primary) Taxonomy 163W00000X · Licence 292638 (NY)
Addiction (Substance Use Disorder) Registered Nurse Taxonomy 163WA0400X · Licence 292638-1 (NY)

Record details

NPI number1972993996
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN
Sole proprietorYes
NPI enumeratedJanuary 29, 2015
Last updated in NPPESApril 11, 2025
Certification dateApril 7, 2025

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