Paul E. Buse, M.D.
NPI 1114993664ActiveIndividual· Internal Medicine, Gastroenterology· Chesterfield, MO
Internal Medicine, Gastroenterology (M.D.) in Chesterfield, Missouri, trained at Washington University School of Medicine (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $825,725 for 1,897 claims, against $78,517 paid for services in 2024. Genzyme Corporation reported $14.04 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1114993664 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Feb 24, 2006 |
| Last updated in NPPES | Mar 30, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | MOR7N74 | MO |
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 (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 469 |
|---|---|
| Services billed | 674 across 32 procedure codes |
| Paid by Medicare | $78,517 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,897 · 3,182 30-day fills |
|---|---|
| Patients | 774 |
| Total drug cost | $825,725 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Washington University School of Medicine |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Mercy Clinic Gastroenterology LLCWashington, MO · 67 clinicians
Hospital affiliations
- Mercy Hospital JeffersonCrystal City, MO
- Mercy Hospital SouthSaint Louis, MO
- Mercy Hospital St LouisSaint Louis, MO
- Missouri Baptist Medical CenterSaint Louis, MO
- St Lukes HospitalChesterfield, MO
Industry payments (Open Payments)
- 2025$14.04 · 1 payment from 1 company
- 2024$66.51 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $14.04 | 1 |
What the 2025 payments were for
- Food and Beverage$14.04 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 26 gastroenterologists in Chesterfield · All gastroenterologists in Missouri