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

MS. Leslie Schwartz Leff, MSS, LCSW

Individual provider Social Worker · NPI 1992173074

MS. Leslie Schwartz Leff, MSS, LCSW is a Social Worker in Northampton, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2015
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

15 Brewster Court The Children's Clinic Cutchins Programs For Children And Families
Northampton, MA 01060-3801
Phone: (215) 870-3609
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Social Worker (primary) Taxonomy 104100000X · Licence 220941 (MA)

Record details

NPI number1992173074
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSS , LCSW
Sole proprietorYes
NPI enumeratedSeptember 8, 2015
Last updated in NPPESSeptember 8, 2015

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