Kenneth I. Oriordan, MD
NPI 1912075649ActiveIndividual· Internal Medicine, Gastroenterology· Niles, IL
Internal Medicine, Gastroenterology (MD) with Northwestern Medical Faculty Foundation and 1 other group, practicing in Niles, Illinois. Their prescriptions cost Medicare Part D more than their services did: $294,940 for 278 claims, against $50,950 paid for services in 2024. Abbvie Inc. reported $120.07 in payments in 2025, mostly food and beverage. Lists Benefis Hospitals Inc and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1912075649 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 1, 2006 |
| Last updated in NPPES | Oct 23, 2025 |
| Certified by provider | Oct 23, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036084107 | IL |
| Internal Medicine, Gastroenterology | 207RG0100X | 57870 | MT |
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 - Gastroenterology (IL); Practitioner - Gastroenterology (MT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 270 |
|---|---|
| Services billed | 589 across 50 procedure codes |
| Paid by Medicare | $50,950 |
Part D prescriptions in 2024
| Prescriptions (claims) | 278 · 526 30-day fills |
|---|---|
| Patients | 97 |
| Total drug cost | $294,940 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical groups
- Northwestern Medical Faculty FoundationChicago, IL · 4,503 clinicians
- Benefis Hospitals IncGreat Falls, MT · 384 clinicians
Hospital affiliations
- Benefis Hospitals IncGreat Falls, MT
- Great Falls Clinic HospitalGreat Falls, MT
- Northwestern Memorial HospitalChicago, IL
Industry payments (Open Payments)
- 2025$120.07 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $120.07 | 2 |
What the 2025 payments were for
- Food and Beverage$120.07 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 20 gastroenterologists in Niles · All gastroenterologists in Illinois