William G. Stahl III, M.D.
NPI 1265484760ActiveIndividual· Internal Medicine, Gastroenterology· Marquette, MI
Internal Medicine, Gastroenterology (M.D.) in Marquette, Michigan, trained at Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc) (class of 1988). 189 Medicare patients in 2024, $216,299 paid; nearly all of their 102 Part D prescriptions were generic (99%). Alexion Pharmaceuticals, Inc. was the largest of 2 companies reporting payments in 2025, $169.60 in all, mostly food and beverage.
Overview
| NPI | 1265484760 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 16, 2006 |
| Last updated in NPPES | Jan 28, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 4301082866 | MI |
| Internal Medicine | 207R00000X | 4301082866 | MI |
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 (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 189 |
|---|---|
| Services billed | 10,863 across 23 procedure codes |
| Paid by Medicare | $216,299 |
Part D prescriptions in 2024
| Prescriptions (claims) | 102 · 242 30-day fills |
|---|---|
| Patients | 44 |
| Total drug cost | $7,702 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc) |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Gastroenterology |
Medical group
- U.P. Digestive Disease Associates. P.C.Marquette, MI · 2 clinicians
Industry payments (Open Payments)
- 2025$169.60 · 7 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alexion Pharmaceuticals, Inc. | $88.72 | 3 |
| Genzyme Corporation | $80.88 | 4 |
What the 2025 payments were for
- Food and Beverage$169.60 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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