Alfred Dennyson Nelson, MD
NPI 1518329770ActiveIndividual· Internal Medicine, Gastroenterology· Saint Peters, MO
Internal Medicine, Gastroenterology (MD) with Physician Groups Lc, practicing in Saint Peters, Missouri. 229 Medicare patients in 2024, $32,509 paid; nearly all of their 77 Part D prescriptions were generic (92%). Boston Scientific Corporation reported $17.38 in payments in 2025, mostly food and beverage. Lists Barnes-Jewish St Peters Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1518329770 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Mar 25, 2016 |
| Last updated in NPPES | Sep 17, 2025 |
| Certified by provider | Sep 17, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 20240137136 | MO |
| Internal Medicine | 207R00000X | 20240137136 | MO |
| Internal Medicine, Gastroenterology | 207RG0100X | ME138983 | FL |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
| Internal Medicine | 207R00000X | ME138983 | FL |
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 (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 229 |
|---|---|
| Services billed | 400 across 32 procedure codes |
| Paid by Medicare | $32,509 |
Part D prescriptions in 2024
| Prescriptions (claims) | 77 · 97 30-day fills |
|---|---|
| Patients | 62 |
| Total drug cost | $1,736 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Physician Groups LcFarmington, MO · 521 clinicians
Hospital affiliations
- Barnes-Jewish St Peters HospitalSaint Peters, MO
- Missouri Baptist Medical CenterSaint Louis, MO
- Progress West HospitalOfallon, MO
Industry payments (Open Payments)
- 2025$17.38 · 1 payment from 1 company
- 2024$28.96 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $17.38 | 1 |
What the 2025 payments were for
- Food and Beverage$17.38 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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