Leonard Giannone, MD
NPI 1245297571ActiveIndividual· Internal Medicine, Hematology & Oncology· Springfield, IL
Internal Medicine, Hematology & Oncology (MD) in Springfield, Illinois, trained at University of Chicago, Pritzker School of Medicine (class of 1979). Their prescriptions cost Medicare Part D more than their services did: $1,536,082 for 470 claims, against $844,384 paid for services in 2024. Daiichi Sankyo Inc. was the largest of 4 companies reporting payments in 2025, $116.66 in all, mostly food and beverage.
Overview
| NPI | 1245297571 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 28, 2006 |
| Last updated in NPPES | May 22, 2020 |
| Certified by provider | May 22, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 036061203 | IL |
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 (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 142 |
|---|---|
| Services billed | 36,215 across 63 procedure codes |
| Paid by Medicare | $844,384 |
Part D prescriptions in 2024
| Prescriptions (claims) | 470 · 681 30-day fills |
|---|---|
| Patients | 76 |
| Total drug cost | $1,536,082 |
| Generic share | 73% of claims |
Education and affiliations
| Medical school | University of Chicago, Pritzker School of Medicine |
|---|---|
| Graduation year | 1979 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Springfield Clinic, LLPSpringfield, IL · 687 clinicians
Hospital affiliations
- Carlinville Area HospitalCarlinville, IL
- Memorial Medical CenterSpringfield, IL
- St Francis HospitalLitchfield, IL
Industry payments (Open Payments)
- 2025$116.66 · 4 payments from 4 companies
- 2024$21.93 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Daiichi Sankyo Inc. | $39.38 | 1 |
| Pfizer Inc. | $30.65 | 1 |
| Novartis Pharmaceuticals Corporation | $24.31 | 1 |
| Janssen Scientific Affairs, LLC | $22.32 | 1 |
What the 2025 payments were for
- Food and Beverage$86.01 · 3 payments
- Education$30.65 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 31 hematologist-oncologists in Springfield · All hematologist-oncologists in Illinois