John Vernon Barton, MD
NPI 1841233095ActiveIndividual· Internal Medicine· Slidell, LA
Internal Medicine (MD) in Slidell, Louisiana, trained at University of Mississippi School of Medicine (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $611,709 for 7,268 claims, against $49,639 paid for services in 2024. Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) was the largest of 7 companies reporting payments in 2025, $589.99 in all, mostly food and beverage.
Overview
| NPI | 1841233095 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 14, 2006 |
| Last updated in NPPES | Jan 19, 2026 |
| Certified by provider | Jan 19, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 09183R | LA |
| Internal Medicine | 207R00000X | 12086 | MS |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 195 |
|---|---|
| Services billed | 560 across 19 procedure codes |
| Paid by Medicare | $49,639 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,268 · 11,526 30-day fills |
|---|---|
| Patients | 283 |
| Total drug cost | $611,709 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of Mississippi School of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Pediatric Medicine |
Hospital affiliations
- Our Lady of the Lake Surgical HospitalSlidell, LA
- Slidell Memorial HospitalSlidell, LA
- St Tammany Parish HospitalCovington, LA
Industry payments (Open Payments)
- 2025$589.99 · 39 payments from 7 companies
- 2024$389.78 · 22 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $231.46 | 19 |
| Axsome Therapeutics, Inc. | $184.59 | 11 |
| Takeda Pharmaceuticals U.S.A., Inc. | $51.81 | 2 |
| Glaxosmithkline, LLC. | $41.03 | 2 |
| Azurity Pharmaceuticals, Inc. | $36.43 | 2 |
What the 2025 payments were for
- Food and Beverage$589.99 · 39 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 62 internal medicine physicians in Slidell · All internal medicine physicians in Louisiana