John R. Groll, M.D.
NPI 1396716163ActiveIndividual· Internal Medicine, Cardiovascular Disease· Chester, IL
Internal Medicine, Cardiovascular Disease (M.D.) in Chester, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $251,316 for 1,196 claims, against $21,771 paid for services in 2024. Siemens Medical Solutions USA, Inc. reported $18.04 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1396716163 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 30, 2006 |
| Last updated in NPPES | Jul 20, 2023 |
| Certified by provider | Jul 20, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 036-094904 | IL |
| Specialist | 174400000X | R8J11 | MO |
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 | 122 |
|---|---|
| Services billed | 322 across 20 procedure codes |
| Paid by Medicare | $21,771 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,196 · 3,069 30-day fills |
|---|---|
| Patients | 213 |
| Total drug cost | $251,316 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical group
- Memorial HospitalChester, IL · 30 clinicians
Hospital affiliation
- Memorial HospitalChester, IL
Industry payments (Open Payments)
- 2025$18.04 · 1 payment from 1 company
- 2024$37.88 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Siemens Medical Solutions USA, Inc. | $18.04 | 1 |
What the 2025 payments were for
- Food and Beverage$18.04 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records