Steven O. Ikenberry, M.D.
NPI 1336135540ActiveIndividual· Internal Medicine, Gastroenterology· Rockford, IL
Internal Medicine, Gastroenterology (M.D.) in Rockford, Illinois, trained at Loyola University of Chicago, Stritch School of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $671,067 for 785 claims, against $85,758 paid for services in 2024. Olympus America Inc. reported $17.18 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1336135540 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 22, 2005 |
| Last updated in NPPES | Dec 22, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 36093860 | IL |
| Internal Medicine, Gastroenterology | 207RG0100X | 01039865A | IN |
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 - Gastroenterology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 225 |
|---|---|
| Services billed | 3,078 across 31 procedure codes |
| Paid by Medicare | $85,758 |
Part D prescriptions in 2024
| Prescriptions (claims) | 785 · 1,367 30-day fills |
|---|---|
| Patients | 246 |
| Total drug cost | $671,067 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Gastroenterology |
Medical group
- Rockford Gastroenterology Associates LtdRockford, IL · 27 clinicians
Industry payments (Open Payments)
- 2025$17.18 · 1 payment from 1 company
- 2024$16.70 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Olympus America Inc. | $17.18 | 1 |
What the 2025 payments were for
- Food and Beverage$17.18 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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