Thomas Henry McGreen, M.D.
NPI 1043205537ActiveIndividual· Internal Medicine, Gastroenterology· Cranston, RI
Internal Medicine, Gastroenterology (M.D.) in Cranston, Rhode Island, trained at New York Medical College (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $652,945 for 1,470 claims, against $75,228 paid for services in 2024. Takeda Pharmaceuticals U.S.A., Inc. was the largest of 13 companies reporting payments in 2025, $1,265 in all, mostly food and beverage.
Overview
| NPI | 1043205537 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 12, 2005 |
| 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 | MD07567 | 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 | 3,826 across 33 procedure codes |
| Paid by Medicare | $75,228 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,470 · 2,988 30-day fills |
|---|---|
| Patients | 329 |
| Total drug cost | $652,945 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 1986 |
| 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
- South County Hospital IncWakefield, RI
- The Miriam HospitalProvidence, RI
- Westerly HospitalWesterly, RI
Industry payments (Open Payments)
- 2025$1,265 · 60 payments from 13 companies
- 2024$1,627 · 95 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | $297.76 | 13 |
| Janssen Biotech, Inc. | $253.09 | 11 |
| Abbvie Inc. | $238.51 | 18 |
| Madrigal Pharmaceuticals | $166.03 | 4 |
| Vertex Pharmaceuticals Incorporated | $70.89 | 3 |
What the 2025 payments were for
- Food and Beverage$1,255 · 59 payments
- Education$10.48 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Gastroenterology providers in Rhode Island →