Osasumwen O. Osayimwen, MD
NPI 1376724898ActiveIndividual· Hospitalist· Glenview, IL
Hospitalist (MD) in Glenview, Illinois, trained at Boston University School of Medicine (class of 2004). In 2024 Medicare paid $80,286 for 351 patients, and Part D covered 250 of their prescriptions, 84% of them generic. Gilead Sciences, Inc. was the largest of 2 companies reporting payments in 2025, $130.12 in all, mostly food and beverage.
Overview
| NPI | 1376724898 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 27, 2007 |
| Last updated in NPPES | Sep 9, 2025 |
| Certified by provider | Sep 9, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | 036121023 | IL |
| Internal Medicine | 207R00000X | 036121023 | 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 - Hospitalist (IL); Practitioner - Hospitalist (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 351 |
|---|---|
| Services billed | 888 across 12 procedure codes |
| Paid by Medicare | $80,286 |
Part D prescriptions in 2024
| Prescriptions (claims) | 250 · 389 30-day fills |
|---|---|
| Patients | 113 |
| Total drug cost | $19,663 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Boston University School of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Hospitalist |
| Secondary specialties | Internal Medicine |
Medical group
- Endeavor Health Medical GroupEvanston, IL · 3,350 clinicians
Hospital affiliation
Other facilities
- Citadel of Glenview,theNursing home · Glenview, IL
Industry payments (Open Payments)
- 2025$130.12 · 2 payments from 2 companies
- 2024$251.91 · 6 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $110.93 | 1 |
| Glaxosmithkline, LLC. | $19.19 | 1 |
What the 2025 payments were for
- Food and Beverage$130.12 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 28 hospitalists in Glenview · All hospitalists in Illinois