Robert John Bierwirth, M.D.
NPI 1053517565ActiveIndividual· Internal Medicine, Gastroenterology· Cranston, RI
Internal Medicine, Gastroenterology (M.D.) with University Gastroenterology, LLC and 1 other group, practicing in Cranston, Rhode Island. Their prescriptions cost Medicare Part D more than their services did: $889,320 for 1,564 claims, against $72,948 paid for services in 2024. Janssen Biotech, Inc. was the largest of 22 companies reporting payments in 2025, $189,564 in all, mostly speaking and faculty fees. Lists Our Lady of Fatima Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1053517565 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 22, 2007 |
| Last updated in NPPES | Oct 15, 2025 |
| Certified by provider | Oct 15, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 13848 | RI |
| Internal Medicine, Hepatology | 207RI0008X | 13848 | RI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (RI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 354 |
|---|---|
| Services billed | 659 across 40 procedure codes |
| Paid by Medicare | $72,948 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,564 · 3,037 30-day fills |
|---|---|
| Patients | 307 |
| Total drug cost | $889,320 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical groups
- University Gastroenterology, LLCProvidence, RI · 102 clinicians
- Internal Medicine Associates IncCranston, RI · 6 clinicians
Hospital affiliations
- Our Lady of Fatima HospitalNorth Providence, RI
- Rhode Island HospitalProvidence, RI
- Roger Williams Medical CenterProvidence, RI
- South County Hospital IncWakefield, RI
- The Miriam HospitalProvidence, RI
Industry payments (Open Payments)
- 2025$189,564 · 379 payments from 22 companies
- 2024$129,139 · 342 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $105,763 | 130 |
| Madrigal Pharmaceuticals | $38,880 | 55 |
| Gilead Sciences, Inc. | $17,659 | 30 |
| Lilly USA, LLC | $16,614 | 25 |
| Phathom Pharmaceuticals, Inc. | $3,822 | 9 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$159,712 · 48 payments
- Travel and Lodging$14,526 · 80 payments
- Food and Beverage$9,347 · 247 payments
- Consulting Fee$5,895 · 3 payments
- Education$84.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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