Chris Geannopoulos, MD
NPI 1265407076ActiveIndividual· Internal Medicine, Cardiovascular Disease· Naperville, IL
Internal Medicine, Cardiovascular Disease (MD) in Naperville, Illinois, trained at University of Chicago, Pritzker School of Medicine (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $957,421 for 5,714 claims, against $286,156 paid for services in 2024. Amgen Inc. was the largest of 5 companies reporting payments in 2025, $188.67 in all, mostly food and beverage.
Overview
| NPI | 1265407076 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 23, 2006 |
| Last updated in NPPES | Aug 8, 2023 |
| Certified by provider | Aug 8, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 036077483 | IL |
| Internal Medicine, Interventional Cardiology | 207RI0011X | 036077483 | IL |
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 - Cardiovascular Disease (Cardiology) (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,293 |
|---|---|
| Services billed | 4,195 across 65 procedure codes |
| Paid by Medicare | $286,156 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,714 · 16,146 30-day fills |
|---|---|
| Patients | 831 |
| Total drug cost | $957,421 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of Chicago, Pritzker School of Medicine |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical groups
- Dupage Medical Group LtdWinfield, IL · 1,322 clinicians
- Edward HospitalBolingbrook, IL · 96 clinicians
- Elmhurst Memorial HospitalElmhurst, IL · 81 clinicians
- Naperville Psychiatric VenturesNaperville, IL · 17 clinicians
Hospital affiliations
- Advocate Good Samaritan HospitalDowners Grove, IL
- Edward HospitalNaperville, IL
- Elmhurst Memorial HospitalElmhurst, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Industry payments (Open Payments)
- 2025$188.67 · 9 payments from 5 companies
- 2024$498.56 · 26 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $64.64 | 4 |
| Novartis Pharmaceuticals Corporation | $39.78 | 2 |
| Novo Nordisk Inc | $29.30 | 1 |
| Boston Scientific Corporation | $28.79 | 1 |
| Cvrx, Inc. | $26.16 | 1 |
What the 2025 payments were for
- Food and Beverage$188.67 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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