Allen R. Calabresi, MD
NPI 1043375363ActiveIndividual· Internal Medicine, Hematology & Oncology· Slidell, LA
Internal Medicine, Hematology & Oncology (MD) in Slidell, Louisiana, trained at Louisiana State University School of Medicine in Shreveport (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $913,663 for 972 claims, against $107,278 paid for services in 2024. Abbvie Inc. was the largest of 21 companies reporting payments in 2025, $620.22 in all, mostly food and beverage.
Overview
| NPI | 1043375363 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 27, 2006 |
| Last updated in NPPES | Jan 22, 2020 |
| Certified by provider | Jan 22, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 022569 | LA |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 17437 | 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 - Hematology/Oncology (LA); Practitioner - Hematology/Oncology (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 511 |
|---|---|
| Services billed | 1,980 across 13 procedure codes |
| Paid by Medicare | $107,278 |
Part D prescriptions in 2024
| Prescriptions (claims) | 972 · 1,420 30-day fills |
|---|---|
| Patients | 249 |
| Total drug cost | $913,663 |
| Generic share | 73% of claims |
Education and affiliations
| Medical school | Louisiana State University School of Medicine in Shreveport |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Hematology |
Medical group
- Ochsner Clinic LLCNew Orleans, LA · 2,864 clinicians
Hospital affiliations
- Highland Community HospitalPicayune, MS
- Ochsner Medical Center AcuteNew Orleans, LA
- Ochsner Medical Center-HancockBay Saint Louis, MS
- Slidell Memorial HospitalSlidell, LA
- St Tammany Parish HospitalCovington, LA
Industry payments (Open Payments)
- 2025$620.22 · 29 payments from 21 companies
- 2024$660.36 · 34 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $78.37 | 4 |
| Astrazeneca Pharmaceuticals LP | $62.46 | 3 |
| Incyte Corporation | $44.77 | 2 |
| Daiichi Sankyo Inc. | $39.30 | 2 |
| Geron Corporation | $35.72 | 2 |
What the 2025 payments were for
- Food and Beverage$620.22 · 29 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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