Robert J. Bonasera, M.D.
NPI 1073537767ActiveIndividual· Internal Medicine, Gastroenterology· Garden City, NY
Internal Medicine, Gastroenterology (M.D.) with Islandwide Gastroenterology PC, practicing in Garden City, New York. In 2024 Medicare paid $288,756 for 1,012 patients, and Part D covered 182 of their prescriptions, 84% of them generic. Abbvie Inc. was the largest of 10 companies reporting payments in 2025, $1,140 in all, mostly food and beverage. Lists Chsli St Joseph Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1073537767 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 26, 2006 |
| Last updated in NPPES | Mar 7, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 237615-1 | NY |
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 (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,012 |
|---|---|
| Services billed | 2,803 across 35 procedure codes |
| Paid by Medicare | $288,756 |
Part D prescriptions in 2024
| Prescriptions (claims) | 182 · 366 30-day fills |
|---|---|
| Patients | 75 |
| Total drug cost | $59,555 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Islandwide Gastroenterology PCGarden City, NY · 5 clinicians
Hospital affiliations
- Chsli St Joseph HospitalBethpage, NY
- St Francis Hospital - the Heart CenterRoslyn, NY
Industry payments (Open Payments)
- 2025$1,140 · 48 payments from 10 companies
- 2024$844.09 · 34 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $317.19 | 15 |
| Janssen Biotech, Inc. | $201.27 | 8 |
| Madrigal Pharmaceuticals | $168.60 | 5 |
| Pfizer Inc. | $106.43 | 4 |
| Takeda Pharmaceuticals U.S.A., Inc. | $92.84 | 4 |
What the 2025 payments were for
- Food and Beverage$1,140 · 48 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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