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

MS. Louise Madelyn Tonning, LCSW

Individual provider Social Worker · NPI 1225195977

MS. Louise Madelyn Tonning, LCSW is a Social Worker in Old Greenwich, Connecticut. Licensed in Connecticut. Registered with an NPI since 2007.

Licensed in
CT
In the registry since
2007
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 →

Practice location Address checks out

14 Halsey Dr
Old Greenwich, CT 06870-1205
Phone: (203) 698-1808
Show map & directions

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

Specialties & licences

Social Worker (primary) Taxonomy 104100000X · Licence 001536 (CT)

Record details

NPI number1225195977
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorNo
NPI enumeratedJanuary 2, 2007
Last updated in NPPESJuly 8, 2007

Other providers in Old Greenwich