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

MS. Courtney Costello, LCSW

Individual provider Social Worker · NPI 1710334545

MS. Courtney Costello, LCSW is a Social Worker in Holtsville, New York. Practices as a sole proprietor and works from 2 locations. Licensed in New York.

Licensed in
NY
In the registry since
2016
Specialties on file
3
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

See every abbreviation used in this directory →

Practice location Address checks out

750 Waverly Ave
Holtsville, NY 11742-1108
Phone: (631) 218-4115
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3600 Ny-112, Coram, NY 11727 — (631) 920-8500

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 089211 (NY)
Social Worker Taxonomy 104100000X · Licence 096358-1 (NY)
Social Worker Taxonomy 104100000X

Record details

NPI number1710334545
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedMay 23, 2016
Last updated in NPPESMay 11, 2020
Certification dateMay 11, 2020

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