Marie Delvalle-Mahoney, M.D.
NPI 1972645786ActiveIndividual· Internal Medicine· Slidell, LA
Internal Medicine (M.D.) in Slidell, Louisiana, trained at Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc) (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $1,112,471 for 10,362 claims, against $69,929 paid for services in 2024. Lilly USA, LLC was the largest of 11 companies reporting payments in 2025, $546.13 in all, mostly food and beverage.
Overview
| NPI | 1972645786 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Feb 12, 2007 |
| Last updated in NPPES | Feb 16, 2024 |
| Certified by provider | Feb 16, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 11216R | LA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 243 |
|---|---|
| Services billed | 1,103 across 50 procedure codes |
| Paid by Medicare | $69,929 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,362 · 20,943 30-day fills |
|---|---|
| Patients | 624 |
| Total drug cost | $1,112,471 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc) |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Hospitalist |
Medical group
- Our Lady of the Lake Physician Group LLCBaton Rouge, LA · 644 clinicians
Hospital affiliations
- Highland Community HospitalPicayune, MS
- Ochsner Medical Center AcuteNew Orleans, LA
- Slidell Memorial HospitalSlidell, LA
- St Tammany Parish HospitalCovington, LA
Other facilities
- Elara CaringHome health agency · Hammond, LA
- Smh-Ochsner Home Health of SlidellHome health agency · Slidell, LA
- Southeast Louisiana Home Health, LLCHome health agency · Covington, LA
Industry payments (Open Payments)
- 2025$546.13 · 23 payments from 11 companies
- 2024$497.90 · 27 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $145.82 | 3 |
| Abbvie Inc. | $80.64 | 4 |
| Novo Nordisk Inc | $74.48 | 3 |
| Dexcom, Inc. | $48.21 | 2 |
| Abbott Laboratories | $47.66 | 2 |
What the 2025 payments were for
- Food and Beverage$546.13 · 23 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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