James E. Walker Jr., M.D., PH.D.
NPI 1578581617ActiveIndividual· Internal Medicine, Pulmonary Disease· Baton Rouge, LA
Internal Medicine, Pulmonary Disease (M.D., PH.D.) in Baton Rouge, Louisiana, trained at University of Mississippi School of Medicine (class of 2002). Mostly services rather than prescriptions: Medicare paid $50,083 for 226 patients in 2024, with only 25 Part D claims. Genzyme Corporation reported $117.36 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1578581617 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., PH.D. |
| Sole proprietor | No |
| NPI issued | Jul 17, 2006 |
| Last updated in NPPES | Feb 5, 2024 |
| Certified by provider | Feb 5, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 308314 | LA |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 308314 | 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) | Enrolled Practitioner - Pulmonary Disease (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 226 |
|---|---|
| Services billed | 640 across 24 procedure codes |
| Paid by Medicare | $50,083 |
Part D prescriptions in 2024
| Prescriptions (claims) | 25 · 35 30-day fills |
|---|---|
| Total drug cost | $6,599 |
Education and affiliations
| Medical school | University of Mississippi School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists) |
Medical groups
- Our Lady of the Lake Physician Group LLCBaton Rouge, LA · 644 clinicians
- Lsuhn Billing LLCLafayette, LA · 206 clinicians
Hospital affiliations
- Baton Rouge General Medical CenterBaton Rouge, LA
- Our Lady of the Lake Regional Medical CenterBaton Rouge, LA
Industry payments (Open Payments)
- 2025$117.36 · 3 payments from 1 company
- 2024$67.87 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $117.36 | 3 |
What the 2025 payments were for
- Food and Beverage$117.36 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 30 pulmonologists in Baton Rouge · All pulmonologists in Louisiana