MA Enrollment Explorer / Parent organizations / OSF Healthcare System
OSF Healthcare System: Medicare Advantage enrollment and market share
OSF Healthcare System had 44 Medicare Advantage members in October 2026, #303 nationally with 0.00% of all MA enrollment. It gained 20 members (+83.3%) since October 2025, and has enrollment in 1 state and 2 counties with 11 or more members. In the 2026 Annual Election Period (December to February) it gained 3 members (+10.0%). For 2027, none of its members are in plans that terminate or leave their county.
44MA members, October 2026
+83.3%change since October 2025 (+20)
0.00%national MA share, rank 303
1contracts with enrollment
Largest states
| State | Members | Share of state MA |
|---|---|---|
| Illinois | 41 | 0.0% |
Largest counties
| County | Members | Change since October 2025 | Share of county MA |
|---|---|---|---|
| Peoria County, IL | 30 | +12 | 0.2% |
| Tazewell County, IL | 11 | new | 0.1% |
Contracts
| Contract | Plan type | Oct 2024 | Oct 2025 | Oct 2026 |
|---|---|---|---|---|
| H3933 OSF Healthcare PACE | National PACE | 0 | 24 | 44 |
Star ratings for these contracts are in the MA Quality Dashboard.