Patrick O'Leary, MD
NPI 1942278890ActiveIndividual· Internal Medicine, Cardiovascular Disease· Winfield, IL
Internal Medicine, Cardiovascular Disease (MD) in Winfield, Illinois, trained at R Franklin University of Med & Sci/Chicago Medical School (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $1,318,831 for 8,265 claims, against $294,825 paid for services in 2024. Amgen Inc. was the largest of 13 companies reporting payments in 2025, $654.23 in all, mostly food and beverage.
Overview
| NPI | 1942278890 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 8, 2006 |
| Last updated in NPPES | Jun 17, 2022 |
| Certified by provider | Jun 17, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 036081566 | 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 - Cardiovascular Disease (Cardiology) (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,024 |
|---|---|
| Services billed | 4,936 across 63 procedure codes |
| Paid by Medicare | $294,825 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,265 · 22,945 30-day fills |
|---|---|
| Patients | 1,180 |
| Total drug cost | $1,318,831 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | R Franklin University of Med & Sci/Chicago Medical School |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Dupage Medical Group LtdWinfield, IL · 1,322 clinicians
Hospital affiliations
- Advocate Good Samaritan HospitalDowners Grove, IL
- Advocate Illinois Masonic Medical CenterChicago, IL
- Carle Health Methodist HospitalPeoria, IL
- Edward HospitalNaperville, IL
- Elmhurst Memorial HospitalElmhurst, IL
Industry payments (Open Payments)
- 2025$654.23 · 30 payments from 13 companies
- 2024$1,016 · 38 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $118.64 | 7 |
| E.R. Squibb & Sons, L.L.C. | $102.77 | 5 |
| Novartis Pharmaceuticals Corporation | $76.54 | 3 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $75.34 | 3 |
| Edwards Lifesciences Corporation | $72.54 | 1 |
What the 2025 payments were for
- Food and Beverage$654.23 · 30 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other cardiologists in Winfield
- 1174591531
- 1194218396
- 1366645046
- 1518905819
- 1619945086
- 1629211875
- 1841272432
- 1952577504
- 1194985564
- 1396796389
- 1679527998
- 1770901852
All 18 cardiologists in Winfield · All cardiologists in Illinois