Peter Walsh, DO
NPI 1255372736ActiveIndividual· Internal Medicine, Gastroenterology· Bozeman, MT
Internal Medicine, Gastroenterology (DO) in Bozeman, Montana, trained at Michigan State University College of Osteopathic Medicine (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $267,204 for 324 claims, against $102,440 paid for services in 2024. Abbvie Inc. was the largest of 9 companies reporting payments in 2025, $657.50 in all, mostly food and beverage.
Overview
| NPI | 1255372736 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jun 8, 2006 |
| Last updated in NPPES | Apr 10, 2025 |
| Certified by provider | Apr 10, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 59075 | MT |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (MT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 552 |
|---|---|
| Services billed | 818 across 39 procedure codes |
| Paid by Medicare | $102,440 |
Part D prescriptions in 2024
| Prescriptions (claims) | 324 · 629 30-day fills |
|---|---|
| Patients | 103 |
| Total drug cost | $267,204 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Michigan State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Bozeman Health Deaconess HospitalBozeman, MT · 320 clinicians
Hospital affiliations
- Bozeman Health Big Sky Medical CenterBig Sky, MT
- Bozeman Health Deaconess HospitalBozeman, MT
- Livingston HealthcareLivingston, MT
- Madison Valley Medical CenterEnnis, MT
Industry payments (Open Payments)
- 2025$657.50 · 32 payments from 9 companies
- 2024$337.95 · 17 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $197.08 | 14 |
| Ardelyx, Inc. | $139.78 | 3 |
| Takeda Pharmaceuticals U.S.A., Inc. | $94.03 | 4 |
| Janssen Biotech, Inc. | $80.67 | 3 |
| Aimmune Therapeutics, Inc. | $57.27 | 3 |
What the 2025 payments were for
- Food and Beverage$657.50 · 32 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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