Posted commercial rates at 32 Illinois hospitals, each next to its own Medicare base rate.
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| Hospital | Median across insurers | × Medicare | Insurers | File date |
|---|---|---|---|---|
| John H Stroger Jr Hospital Chicago | $1,868 | 0.5× | 1 | 2026-04-01 |
| Northwestern Medicine Mchenry Hospital McHenry | $2,641 | 0.8× | 2 | 2026-04-01 |
| West Suburban Medical Center Oak Park | $2,833 | 0.8× | 5 | 2025-03-17 |
| Northwestern Memorial Hospital Chicago | $3,137 | 0.9× | 1 | 2026-04-01 |
| Mt Sinai Hospital Medical Center Chicago | $3,306 | 0.9× | 4 | 2026-09-22 |
| Holy Cross Hospital Chicago | $3,306 | 0.9× | 6 | 2026-09-22 |
| Endeavor Health Northwest Community Hospital Arlington Heights | $4,035 | 1.1× | 3 | 2026-04-01 |
| Uchicago Medicine Adventhealth Hinsdale Hinsdale | $4,162 | 1.2× | 4 | 2026-04-01 |
| Uchicago Medicine Adventhealth La Grange La Grange | $4,175 | 1.2× | 3 | 2026-04-01 |
| Uchicago Medicine Adventhealth Glenoaks Glendale Heights | $4,175 | 1.2× | 3 | 2026-04-01 |
| Uchicago Medicine Adventhealth Bolingbrook Bolingbrook | $4,175 | 1.2× | 3 | 2026-04-01 |
| Trinity Rock Island Rock Island | $4,713 | 1.3× | 5 | 2026-01-28 |
| Endeavor Health Edward Hospital Naperville | $4,890 | 1.4× | 2 | 2026-04-01 |
| Swedish Hospital Chicago | $4,992 | 1.4× | 3 | 2026-04-01 |
| Deaconess Illinois Medical Center Marion | $5,581 | 1.6× | 5 | 2026-02-03 |
| Endeavor Health Elmhurst Hospital Elmhurst | $5,725 | 1.6× | 2 | 2026-04-01 |
| Endeavor Health Evanston Hospital Evanston | $6,180 | 1.8× | 3 | 2026-04-01 |
| Advocate Sherman Hospital Elgin | $7,154 | 2.0× | 1 | 2025-11-04 |
| Advocate Condell Medical Center Libertyville | $7,713 | 2.2× | 1 | 2025-11-04 |
| Carle Health Proctor Hospital Peoria | $7,715 | 2.2× | 1 | 2026-04-15 |
| Carle Health Pekin Hospital Pekin | $7,715 | 2.2× | 1 | 2026-04-15 |
| Carle Health Methodist Hospital Peoria | $7,715 | 2.2× | 1 | 2026-04-15 |
| Ingalls Memorial Hospital Harvey | $7,929 | 2.3× | 3 | 2026-04-01 |
| University of Chicago Medical Center Chicago | $9,130 | 2.6× | 2 | 2026-04-01 |
| Deaconess Illinois Crossroads Mount Vernon | $9,639 | 2.8× | 3 | 2026-02-03 |
| Advocate Trinity Hospital Chicago | $10,219 | 2.9× | 1 | 2025-11-04 |
| Advocate Illinois Masonic Medical Center Chicago | $10,219 | 2.9× | 1 | 2025-11-04 |
| Advocate Christ Medical Center Oak Lawn | $10,219 | 2.9× | 1 | 2025-11-04 |
| Advocate Lutheran General Hospital Park Ridge | $10,219 | 2.9× | 1 | 2025-11-04 |
| Advocate Good Samaritan Hospital Downers Grove | $10,219 | 2.9× | 1 | 2025-11-04 |
| Advocate Good Shepherd Hospital Barrington | $10,219 | 2.9× | 1 | 2025-11-04 |
| Morrison Community Hospital Morrison | $12,118 | 3.5× | 3 | 2026-03-13 |
32 Illinois hospitals post usable commercial rates for knee arthroscopy, diagnostic in their federal price-transparency files. For CPT 29870, hospital outpatient, the median across 32 hospitals is $5,953, 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.