Individual provider · Type 1 NPI

Flo Marshak, LCSW

Clinical Social Worker · Smithtown, NY

NPI number 1265405641 Active

Practice location

50 Karl Ave, Ste 205
Smithtown, NY 11787

Fax (631) 724-5500

Specialties and licenses

TaxonomyCodeLicense
Clinical Social Worker Primary 1041C0700XR0520641 (NY)

Clinical Social Worker: A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpers…

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About NPI 1265405641

Flo Marshak, LCSW's National Provider Identifier is 1265405641, issued on Feb 8, 2006. The primary taxonomy on file is Clinical Social Worker (1041C0700X), and the practice location is in Smithtown, NY. The record was last updated on Jul 13, 2026.