Pedro Mariano Barros, M.D.
NPI 1649276494ActiveIndividual· Internal Medicine, Gastroenterology· East Greenwich, RI
Internal Medicine, Gastroenterology (M.D.) in East Greenwich, Rhode Island, trained at Southern Illinois University School of Medicine (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $244,271 for 1,500 claims, against $28,626 paid for services in 2024. Abbvie Inc. was the largest of 9 companies reporting payments in 2025, $949.95 in all, mostly food and beverage.
Overview
| NPI | 1649276494 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 27, 2005 |
| Last updated in NPPES | Jul 9, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | MD11144 | RI |
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 (RI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 168 |
|---|---|
| Services billed | 282 across 27 procedure codes |
| Paid by Medicare | $28,626 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,500 · 2,641 30-day fills |
|---|---|
| Patients | 270 |
| Total drug cost | $244,271 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Southern Illinois University School of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Gastroenterology |
Medical groups
- Affinity Physicians LLC.Warwick, RI · 730 clinicians
- University Gastroenterology, LLCProvidence, RI · 102 clinicians
Hospital affiliation
- Kent County Memorial HospitalWarwick, RI
Industry payments (Open Payments)
- 2025$949.95 · 51 payments from 9 companies
- 2024$943.21 · 54 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $392.66 | 25 |
| Ardelyx, Inc. | $151.67 | 8 |
| Madrigal Pharmaceuticals | $123.03 | 3 |
| Phathom Pharmaceuticals, Inc. | $112.93 | 7 |
| Gilead Sciences, Inc. | $77.86 | 4 |
What the 2025 payments were for
- Food and Beverage$949.95 · 51 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Gastroenterology providers in Rhode Island →