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

Individual provider Clinical Social Worker · NPI 1417098476

Barbara Leff, LCSW is a Clinical Social Worker in New York, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2007
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

301 E 79th St #4D
New York, NY 10021-0951 Not confirmed with CMS for 19 years — call before visiting
Phone: (212) 535-4107
Fax: (212) 327-4090
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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 NR040086 (NY)

Record details

NPI number1417098476
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedFebruary 10, 2007
Last updated in NPPESJuly 8, 2007

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