Posted commercial rates at 8 Illinois hospitals, each next to its own Medicare base rate.
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| Hospital | Median across insurers | × Medicare | Insurers | File date |
|---|---|---|---|---|
| Sarah Bush Lincoln Health Center Mattoon | $11,129 | 1.0× | 1 | 2026-06-03 |
| Endeavor Health Northwest Community Hospital Arlington Heights | $13,387 | 1.3× | 3 | 2026-04-01 |
| Endeavor Health Edward Hospital Naperville | $15,452 | 1.4× | 3 | 2026-04-01 |
| Endeavor Health Elmhurst Hospital Elmhurst | $17,136 | 1.6× | 3 | 2026-04-01 |
| Endeavor Health Evanston Hospital Evanston | $19,674 | 1.8× | 3 | 2026-04-01 |
| Loyola University Medical Center Maywood | $20,864 | 1.9× | 4 | 2026-03-31 |
| Rush University Medical Center Chicago | $21,390 | 2.0× | 4 | 2026-09-25 |
| University of Chicago Medical Center Chicago | $25,980 | 2.4× | 5 | 2026-04-01 |
8 Illinois hospitals post usable commercial rates for psychiatric hospital stay (psychoses) in their federal price-transparency files. For inpatient stay (MS-DRG 885), the median across 8 hospitals is $18,405, 1.7× each hospital's local Medicare base rate. Your share depends on your plan's deductible and coinsurance; the surgeon and anesthesia bill separately.