John Hardage Webb, M.D.
NPI 1801804133ActiveIndividual· Internal Medicine, Gastroenterology· Oxford, MS
Internal Medicine, Gastroenterology (M.D.) in Oxford, Mississippi, trained at University of Mississippi School of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $949,923 for 2,289 claims, against $201,949 paid for services in 2024. Janssen Biotech, Inc. was the largest of 18 companies reporting payments in 2025, $2,534 in all, mostly food and beverage.
Overview
| NPI | 1801804133 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 3, 2006 |
| Last updated in NPPES | Feb 16, 2026 |
| Certified by provider | Feb 16, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 12621 | MS |
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 (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 852 |
|---|---|
| Services billed | 5,120 across 47 procedure codes |
| Paid by Medicare | $201,949 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,289 · 3,297 30-day fills |
|---|---|
| Patients | 781 |
| Total drug cost | $949,923 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | University of Mississippi School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Gastroenterology |
Medical group
- Gastroenterology Center of the Midsouth PLLCJackson, TN · 149 clinicians
Hospital affiliations
- Baptist Memorial Hospital North MsOxford, MS
- Baptist Memorial Hospital Union CountyNew Albany, MS
- University of Mississippi Medical Center- GrenadaGrenada, MS
Industry payments (Open Payments)
- 2025$2,534 · 129 payments from 18 companies
- 2024$2,618 · 140 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $472.30 | 20 |
| Abbvie Inc. | $330.05 | 25 |
| Takeda Pharmaceuticals U.S.A., Inc. | $269.67 | 14 |
| Genzyme Corporation | $212.11 | 9 |
| Aimmune Therapeutics, Inc. | $151.31 | 11 |
What the 2025 payments were for
- Food and Beverage$2,403 · 127 payments
- Education$131.27 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Gastroenterology providers in Oxford
- 1982017521
- 1154339414
- 1225046543
- 1487974192
- 1588623292
All Internal Medicine, Gastroenterology providers in Mississippi →