John Edward McLachlan Jr., M.D.
NPI 1457331761ActiveIndividual· Internal Medicine, Cardiovascular Disease· Baton Rouge, LA
Internal Medicine, Cardiovascular Disease (M.D.) with Our Lady of the Lake Physician Group LLC and 1 other group, practicing in Baton Rouge, Louisiana. In 2024 Medicare paid $269,500 for 726 patients, and Part D covered 1,667 of their prescriptions, 82% of them generic. E.R. Squibb & Sons, L.L.C. was the largest of 14 companies reporting payments in 2025, $829.78 in all, mostly food and beverage. Lists Our Lady of the Lake Regional Medical Center as a hospital affiliation.
Overview
| NPI | 1457331761 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 20, 2006 |
| Last updated in NPPES | Feb 19, 2021 |
| Certified by provider | Feb 19, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 09296R | 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 - Cardiovascular Disease (Cardiology) (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 726 |
|---|---|
| Services billed | 3,827 across 40 procedure codes |
| Paid by Medicare | $269,500 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,667 · 3,167 30-day fills |
|---|---|
| Patients | 379 |
| Total drug cost | $230,985 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 1991 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Telehealth | Offers telehealth |
Medical groups
- Our Lady of the Lake Physician Group LLCBaton Rouge, LA · 644 clinicians
- Baton Rouge General Physicians IncBaton Rouge, LA · 191 clinicians
Hospital affiliation
- Our Lady of the Lake Regional Medical CenterBaton Rouge, LA
Industry payments (Open Payments)
- 2025$829.78 · 29 payments from 14 companies
- 2024$1,330 · 50 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $207.08 | 8 |
| Ancora Heart, Inc. | $155.04 | 1 |
| Cleerly, Inc. | $89.91 | 2 |
| Abiomed | $76.28 | 3 |
| Novartis Pharmaceuticals Corporation | $54.31 | 3 |
What the 2025 payments were for
- Food and Beverage$829.78 · 29 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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