Thomas R Defanti, MD

Primary specialty

Addiction Medicine (Psychiatry & Neurology) PhysicianTaxonomy code 2084A0401X

License

049233 Issued in CT

Practice address

75 Swantown HL
North Stonington, CT 06359-1022

Phone

(860) 535-1010

Fax

(860) 445-3677

NPI assigned

Jul 19, 2006

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in RI, CT2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Addiction MedicineAlso: Internal Medicine

Education

Georgetown University School of Medicine, 1981

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Connecticut Addiction Medicine, LLC 6 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Not enrolled

HHS exclusion list flag

Flagged The directory lists this NPI on an HHS exclusion list. Confirm with the OIG exclusions search.

Credentials

Doctor of Medicine

State licenses

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Connecticut Addiction Medicine, LLC

  • Addiction Psychiatry Physician
  • Rocky Hill, CT
  • NPI 1710312368

  CT

  Medicare reassignment Care Compare group
• Sound Recovery, Inc

  • Addiction Medicine (Family Medicine) Physician
  • Stonington, CT
  • NPI 1972127678

  Addiction Medicine

  NPD Authorized official
• Anna Gut LLC

  • Psychiatric/Mental Health Registered Nurse
  • Rocky Hill, CT
  • NPI 1174949572
  NPD (past)
• Mainehealth

  • Skilled Nursing Facility
  • Sanford, ME
  • NPI 1447342209
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1153267200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760313600000",
    "number": "1043239783",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "75 SWANTOWN HL",
            "city": "NORTH STONINGTON",
            "state": "CT",
            "postal_code": "063591022",
            "telephone_number": "860-535-1010",
            "fax_number": "860-445-3677"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "75 SWANTOWN HL",
            "city": "NORTH STONINGTON",
            "state": "CT",
            "postal_code": "063591022",
            "telephone_number": "860-535-1010",
            "fax_number": "860-445-3677"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DEFANTI",
        "first_name": "THOMAS",
        "middle_name": "R",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-19",
        "last_updated": "2025-10-13",
        "certification_date": "2025-10-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207QA0401X",
            "taxonomy_group": "",
            "desc": "Family Medicine, Addiction Medicine",
            "state": "ME",
            "license": "011764",
            "primary": false
        },
        {
            "code": "2084A0401X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Addiction Medicine",
            "state": "CT",
            "license": "049233",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Brighter Smiles LLC
• Rocco Bernard Carella, DDS
• Amanda Conti, MD
• Matthew Lyons Dalton
• Carol D. Daukas, A.P.
• Barbara Ann Deindorfer, MD
• Dr Stefana Pecher LLC
• Peter L. Drake
• B J Drew V, APRN
• Elizabeth Ferland, APRN

• All providers in North Stonington, CT
• Addiction Medicine (Psychiatry & Neurology) Physician in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 13, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.