Abera H. Abay, M.D.
NPI 1861489585ActiveIndividual· Internal Medicine, Gastroenterology· Norwich, CT
Internal Medicine, Gastroenterology (M.D.) with Connecticut Gi PLLC, practicing in Norwich, Connecticut. Their prescriptions cost Medicare Part D more than their services did: $860,930 for 1,808 claims, against $215,653 paid for services in 2024. Abbvie Inc. was the largest of 18 companies reporting payments in 2025, $2,440 in all, mostly food and beverage. Lists William W Backus Hospital as a hospital affiliation.
Overview
| NPI | 1861489585 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 29, 2005 |
| Last updated in NPPES | Nov 12, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 039924 | 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 | 378 |
|---|---|
| Services billed | 8,706 across 39 procedure codes |
| Paid by Medicare | $215,653 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,808 · 3,668 30-day fills |
|---|---|
| Patients | 650 |
| Total drug cost | $860,930 |
| Generic share | 76% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Connecticut Gi PLLCWallingford, CT · 248 clinicians
Hospital affiliation
- William W Backus HospitalNorwich, CT
Industry payments (Open Payments)
- 2025$2,440 · 104 payments from 18 companies
- 2024$2,370 · 118 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $479.82 | 23 |
| Takeda Pharmaceuticals U.S.A., Inc. | $318.58 | 12 |
| Phathom Pharmaceuticals, Inc. | $267.23 | 13 |
| Madrigal Pharmaceuticals | $234.88 | 5 |
| Gilead Sciences, Inc. | $208.40 | 10 |
What the 2025 payments were for
- Food and Beverage$2,440 · 104 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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