John M. Vierling, MD
NPI 1043390388ActiveIndividual· Internal Medicine, Gastroenterology· Houston, TX
Internal Medicine, Gastroenterology (MD) in Houston, Texas, licensed in TX, with an NPI issued in October 2006. Gilead Sciences, Inc. was the largest of 4 companies reporting payments in 2025, $78,691 in all, mostly speaking and faculty fees.
Overview
| NPI | 1043390388 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 17, 2006 |
| Last updated in NPPES | Dec 12, 2023 |
| Certified by provider | Dec 12, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | M8457 | TX |
| Internal Medicine | 207R00000X | M8457 | TX |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|
Industry payments (Open Payments)
- 2025$78,691 · 38 payments from 4 companies
- 2024$55,173 · 37 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $54,808 | 27 |
| Ipsen Biopharmaceuticals, Inc | $21,889 | 9 |
| Amgen Inc. | $1,950 | 1 |
| Perspectum Diagnostics Ltd | $44.60 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$54,210 · 9 payments
- Consulting Fee$13,957 · 5 payments
- Travel and Lodging$6,949 · 17 payments
- Honoraria$3,320 · 1 payment
- Food and Beverage$255.02 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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