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

Mark L. Henderson, LCSW

Individual provider Clinical Social Worker · NPI 1083606826

Mark L. Henderson, LCSW is a Clinical Social Worker in Poughkeepsie, New York. Licensed in New York. Registered with an NPI since 2005.

Licensed in
NY
In the registry since
2005
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

29 N Hamilton St
Poughkeepsie, NY 12601-2541
Phone: (845) 452-1110
Fax: (845) 452-1119
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence PR026381-1 (NY)

Record details

NPI number1083606826
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorNo
NPI enumeratedAugust 18, 2005
Last updated in NPPESJuly 13, 2026
Mailing address29 N Hamilton St, Poughkeepsie, NY 12601-2541

Other providers in Poughkeepsie