John Mark Lawson, MD
NPI 1164406716ActiveIndividual· Internal Medicine, Gastroenterology· Christiansburg, VA
Internal Medicine, Gastroenterology (MD) in Christiansburg, Virginia, trained at Emory University School of Medicine (class of 1980). Their prescriptions cost Medicare Part D more than their services did: $627,448 for 908 claims, against $137,808 paid for services in 2024. Abbvie Inc. was the largest of 2 companies reporting payments in 2025, $67.23 in all, mostly food and beverage.
Overview
| NPI | 1164406716 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 6, 2005 |
| Last updated in NPPES | Mar 25, 2024 |
| Certified by provider | Mar 25, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 010146550 | VA |
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 (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 572 |
|---|---|
| Services billed | 944 across 38 procedure codes |
| Paid by Medicare | $137,808 |
Part D prescriptions in 2024
| Prescriptions (claims) | 908 · 1,917 30-day fills |
|---|---|
| Patients | 307 |
| Total drug cost | $627,448 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Emory University School of Medicine |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Carilion Healthcare CorporationPearisburg, VA · 536 clinicians
Hospital affiliation
- Carilion New River Valley Medical CenterChristiansburg, VA
Industry payments (Open Payments)
- 2025$67.23 · 3 payments from 2 companies
- 2024$289.13 · 18 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $37.61 | 2 |
| Alnylam Pharmaceuticals Inc. | $29.62 | 1 |
What the 2025 payments were for
- Food and Beverage$67.23 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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