Jeffrey T. Dreznick, M.D.
NPI 1902895436ActiveIndividual· Internal Medicine, Gastroenterology· Ansonia, CT
Internal Medicine, Gastroenterology (M.D.) in Ansonia, Connecticut, trained at Icahn School of Medicine at Mount Sinai (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $534,800 for 1,373 claims, against $26,881 paid for services in 2024. Abbvie Inc. reported $18.18 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1902895436 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 18, 2005 |
| Last updated in NPPES | Feb 19, 2021 |
| Certified by provider | Feb 19, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 028004 | CT |
| Internal Medicine | 207R00000X | 028004 | CT |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 128 |
|---|---|
| Services billed | 223 across 24 procedure codes |
| Paid by Medicare | $26,881 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,373 · 2,343 30-day fills |
|---|---|
| Patients | 435 |
| Total drug cost | $534,800 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Gastroenterology |
Medical group
- Griffin Faculty Physicians IncDerby, CT · 134 clinicians
Hospital affiliation
- Griffin HospitalDerby, CT
Industry payments (Open Payments)
- 2025$18.18 · 1 payment from 1 company
- 2024$504.31 · 21 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $18.18 | 1 |
What the 2025 payments were for
- Food and Beverage$18.18 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Gastroenterology providers in Ansonia
- 1952406688
- 1770624447
- 1750589883
- 1316237936
All Internal Medicine, Gastroenterology providers in Connecticut →