John A. Walker Jr., M.D.
NPI 1477536324ActiveIndividual· Family Medicine· Hammond, LA
Family Medicine (M.D.) in Hammond, Louisiana, licensed in LA, with an NPI issued in November 2005. Their prescriptions cost Medicare Part D more than their services did: $625,219 for 4,951 claims, against $26,668 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 6 companies reporting payments in 2025, $216.48 in all, mostly food and beverage.
Overview
| NPI | 1477536324 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 23, 2005 |
| Last updated in NPPES | Apr 15, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 011436 | LA |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 159 |
|---|---|
| Services billed | 424 across 24 procedure codes |
| Paid by Medicare | $26,668 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,951 · 11,165 30-day fills |
|---|---|
| Patients | 389 |
| Total drug cost | $625,219 |
| Generic share | 83% of claims |
Industry payments (Open Payments)
- 2025$216.48 · 10 payments from 6 companies
- 2024$948.90 · 57 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $57.87 | 3 |
| Boston Scientific Corporation | $52.81 | 1 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $35.18 | 2 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $32.58 | 2 |
| Abbvie Inc. | $20.55 | 1 |
What the 2025 payments were for
- Food and Beverage$216.48 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 27 family medicine physicians in Hammond · All family medicine physicians in Louisiana