Quick answers
- Where does Thomas Defanti see patients?
- Medicare's clinician data lists 1 practice location in Rocky Hill, CT. Call before your visit to confirm the address.
- What is Thomas Defanti's specialty?
- Medicare lists Addiction Medicine as the primary specialty, and also Internal Medicine.
- Does Thomas Defanti accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas Defanti accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Thomas Defanti?
- (860) 757-3874, as listed in official Medicare / NPI Registry data.
- What is Thomas Defanti's NPI number?
- 1043239783. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Thomas Defanti is enrolled with Medicare (CMS data updated 2026-10-02).
- 546 Cromwell Ave, Suite 101Rocky Hill, CT 06067 (860) 757‑3874
Group practices
Medicare enrollment lists Thomas Defanti as a member of this group (CMS data updated 2026-10-02).
- Connecticut Addiction Medicine, LLC6 clinicians in the group
Specialties
- Addiction Medicineprimary
- Internal Medicinealso
Other addiction medicine doctors in Connecticut
Clinicians with the same Medicare primary specialty in Connecticut — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1043239783 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians