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

Thomas R Defanti, MD

Individual provider Addiction Medicine (Family Medicine) Physician · NPI 1043239783

Thomas R Defanti, MD is an Addiction Medicine (Family Medicine) Physician in North Stonington, Connecticut. Licensed in Connecticut and Maine. Registered with an NPI since 2006.

Licensed in
CT, ME
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

75 Swantown Hl
North Stonington, CT 06359-1022
Phone: (860) 535-1010
Fax: (860) 445-3677
Show map & directions

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

Specialties & licences

Addiction Medicine (Psychiatry & Neurology) Physician (primary) Taxonomy 2084A0401X · Licence 049233 (CT)
Addiction Medicine (Family Medicine) Physician Taxonomy 207QA0401X · Licence 011764 (ME)

Record details

NPI number1043239783
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 19, 2006
Last updated in NPPESOctober 13, 2025
Certification dateOctober 13, 2025
Mailing address75 Swantown Hl, North Stonington, CT 06359-1022