John Michael Cahill, MD
NPI 1124071337ActiveIndividual· Internal Medicine, Interventional Cardiology· Elmhurst, IL
Internal Medicine, Interventional Cardiology (MD) in Elmhurst, Illinois, licensed in IL, with an NPI issued in May 2006. Their prescriptions cost Medicare Part D more than their services did: $1,259,208 for 7,790 claims, against $327,160 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 8 companies reporting payments in 2025, $264.74 in all, mostly food and beverage.
Overview
| NPI | 1124071337 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 18, 2006 |
| Last updated in NPPES | Jul 14, 2021 |
| Certified by provider | Jul 14, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | 036.066599 | IL |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 036.066599 | IL |
| Internal Medicine, Interventional Cardiology | 207RI0011X | 036066599 | 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 - Interventional Cardiology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,477 |
|---|---|
| Services billed | 5,709 across 60 procedure codes |
| Paid by Medicare | $327,160 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,790 · 20,769 30-day fills |
|---|---|
| Patients | 947 |
| Total drug cost | $1,259,208 |
| Generic share | 85% of claims |
Industry payments (Open Payments)
- 2025$264.74 · 12 payments from 8 companies
- 2024$717.06 · 36 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $68.21 | 3 |
| Abbott Laboratories | $54.59 | 2 |
| Pfizer Inc. | $37.51 | 2 |
| Cvrx, Inc. | $28.68 | 1 |
| Amgen Inc. | $23.80 | 1 |
What the 2025 payments were for
- Food and Beverage$264.74 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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