Samuel A. Johnson, MD
NPI 1083638217ActiveIndividual· Specialist· Columbus, MS
Specialist (MD) in Columbus, Mississippi, trained at Brody School of Medicine at East Carolina University (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $1,083,664 for 3,019 claims, against $274,341 paid for services in 2024. Janssen Biotech, Inc. was the largest of 14 companies reporting payments in 2025, $1,778 in all, mostly food and beverage.
Overview
| NPI | 1083638217 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 27, 2006 |
| Last updated in NPPES | Jan 10, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | 13781 | 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 | 665 |
|---|---|
| Services billed | 5,775 across 54 procedure codes |
| Paid by Medicare | $274,341 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,019 · 5,339 30-day fills |
|---|---|
| Patients | 901 |
| Total drug cost | $1,083,664 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Brody School of Medicine at East Carolina University |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Gastroenterology Associates of Columbus, LLCStarkville, MS · 10 clinicians
Hospital affiliations
- Baptist Memorial Hospital-Oktibbeha CountyStarkville, MS
- Bmh-Golden TriangleColumbus, MS
- Clay County Medical CorporationWest Point, MS
Industry payments (Open Payments)
- 2025$1,778 · 96 payments from 14 companies
- 2024$1,396 · 77 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $335.09 | 14 |
| Abbvie Inc. | $326.77 | 28 |
| Genzyme Corporation | $245.79 | 10 |
| Takeda Pharmaceuticals U.S.A., Inc. | $196.36 | 10 |
| Qol Medical, LLC | $141.00 | 6 |
What the 2025 payments were for
- Food and Beverage$1,679 · 95 payments
- Education$99.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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