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

Individual provider Social Worker · NPI 1013451434

Katherine Kowalczik, LCSW is a Social Worker in Brooklyn, New York. Practices as a sole proprietor and works from 2 locations. Licensed in California and New York.

Licensed in
CA, NY
In the registry since
2016
Specialties on file
3
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

397 Bridge St
Brooklyn, NY 11201-5292
Phone: (646) 904-8155
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 19712 Macarthur Blvd Ste 110, Irvine, CA 92612-2407 — (646) 904-8155

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 092564 (NY)
Social Worker Taxonomy 104100000X · Licence 1050001 (NY)
Clinical Social Worker Taxonomy 1041C0700X · Licence 108007 (CA)

Record details

NPI number1013451434
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedDecember 5, 2016
Last updated in NPPESAugust 2, 2022
Certification dateAugust 2, 2022

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