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

Mr. Jonathan Oliver Kastner, LCSW

Individual provider Clinical Social Worker · NPI 1053576173

Mr. Jonathan Oliver Kastner, LCSW is a Clinical Social Worker in New York, 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

1133 Broadway Ste 1028
New York, NY 10010-7903 Not confirmed with CMS for 13 years — call before visiting
Phone: (917) 370-1016
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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

Record details

NPI number1053576173
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedJuly 29, 2008
Last updated in NPPESOctober 11, 2012

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