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

Individual provider Clinical Social Worker · NPI 1811293483

MS. Crystal Marsonia, LCSW is a Clinical Social Worker in Brooklyn, New York. Practices as a sole proprietor. Licensed in California and New York.

Licensed in
CA, NY
In the registry since
2011
Specialties on file
2
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

451 Clarkson Ave
Brooklyn, NY 11203-2054
Phone: (718) 245-7259
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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 081888 (NY)
Clinical Social Worker Taxonomy 1041C0700X · Licence 63275 (CA)

Record details

NPI number1811293483
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedJanuary 31, 2011
Last updated in NPPESSeptember 19, 2024
Certification dateSeptember 19, 2024

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