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

Matthew Kossin, LCSW

Individual provider Clinical Social Worker · NPI 1649111717

Matthew Kossin, LCSW is a Clinical Social Worker in Forest Hills, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2026
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

10837 71st Ave Apt 10J
Forest Hills, NY 11375-4520
Phone: (516) 476-3791
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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 102467 (NY)

Record details

NPI number1649111717
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedApril 2, 2026
Last updated in NPPESApril 2, 2026
Certification dateApril 2, 2026

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