John R. Weber, MD
NPI 1770568289ActiveIndividual· Internal Medicine, Gastroenterology· Troy, MI
Internal Medicine, Gastroenterology (MD) in Troy, Michigan, trained at University of Michigan Medical School (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $2,226,342 for 1,569 claims, against $126,852 paid for services in 2024. Janssen Biotech, Inc. was the largest of 15 companies reporting payments in 2025, $1,236 in all, mostly food and beverage.
Overview
| NPI | 1770568289 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 8, 2005 |
| Last updated in NPPES | Feb 12, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 4301069183 | MI |
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 (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 572 |
|---|---|
| Services billed | 4,641 across 45 procedure codes |
| Paid by Medicare | $126,852 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,569 · 3,434 30-day fills |
|---|---|
| Patients | 487 |
| Total drug cost | $2,226,342 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Michigan Medical School |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Troy Gastroenterology PCRochester Hills, MI · 49 clinicians
Hospital affiliations
- Beaumont Hospital - Farmington HillsFarmington Hills, MI
- Beaumont Hospital - Grosse PointeGrosse Pointe, MI
- Beaumont Hospital Royal OakRoyal Oak, MI
- Beaumont Hospital, TroyTroy, MI
Industry payments (Open Payments)
- 2025$1,236 · 57 payments from 15 companies
- 2024$1,342 · 73 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $376.11 | 15 |
| Abbvie Inc. | $293.34 | 15 |
| Pfizer Inc. | $110.42 | 5 |
| Genzyme Corporation | $93.20 | 4 |
| Astrazeneca Pharmaceuticals LP | $68.49 | 1 |
What the 2025 payments were for
- Food and Beverage$1,068 · 55 payments
- Education$167.49 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 21 gastroenterologists in Troy · All gastroenterologists in Michigan