Dennis A. Dahlstedt, MD
NPI 1366467615ActiveIndividual· Internal Medicine, Gastroenterology· Rochester Hills, MI
Internal Medicine, Gastroenterology (MD) in Rochester Hills, Michigan, trained at Wayne State University School of Medicine (class of 1977). Their prescriptions cost Medicare Part D more than their services did: $2,340,517 for 1,073 claims, against $158,436 paid for services in 2024. Abbvie Inc. was the largest of 16 companies reporting payments in 2025, $1,414 in all, mostly food and beverage.
Overview
| NPI | 1366467615 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 13, 2006 |
| Last updated in NPPES | Aug 8, 2024 |
| Certified by provider | Aug 8, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 4301040007 | 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 | 294 |
|---|---|
| Services billed | 43,451 across 40 procedure codes |
| Paid by Medicare | $158,436 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,073 · 2,551 30-day fills |
|---|---|
| Patients | 308 |
| Total drug cost | $2,340,517 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Wayne State University School of Medicine |
|---|---|
| Graduation year | 1977 |
| Medicare specialty | Gastroenterology |
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$1,414 · 66 payments from 16 companies
- 2024$1,479 · 65 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $299.58 | 18 |
| Takeda Pharmaceuticals U.S.A., Inc. | $177.54 | 11 |
| Janssen Biotech, Inc. | $117.43 | 4 |
| Janssen Scientific Affairs, LLC | $115.21 | 1 |
| Genzyme Corporation | $106.57 | 5 |
What the 2025 payments were for
- Food and Beverage$1,330 · 65 payments
- Education$84.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 18 gastroenterologists in Rochester Hills · All gastroenterologists in Michigan