THOMAS R DEFANTI (MD) – Addiction Medicine (Psychiatry & Neurology) Physician, NPI 1043239783
Addiction Medicine (Psychiatry & Neurology) Physician
Main info
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for THOMAS R DEFANTI (MD)
Stonington Institute, 75, Swantown Hill Road, North Stonington, Southeastern Connecticut Planning Region, Connecticut, 06359, United States
NORTH STONINGTON, CT 063591022
Phone: (860) 535-1010
Fax: (860) 445-3677
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 25 Open Payments records for all available years, with a total value of $505.
Total Amount is formed as General ($505) + Research ($0) + Ownership ($0) = $505.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: Alkermes, Inc. ($285).
Total Amount
$505
General + Research + Ownership
Payments
25
Total payment records
General Amount
$505
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Alkermes, Inc. | $285 |
| Indivior Inc. | $188 |
| Braeburn Inc. | $18 |
| Otsuka America Pharmaceutical, Inc. | $14 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2023-05-04
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20210120002853 | I | Addiction Medicine | RI | TBD |
| I20230504002531 | I | Addiction Medicine | CT | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 06359)
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