Medicare Advantage in Sibley County, Minnesota
2,375 people in Sibley County, Minnesota were enrolled in Medicare Advantage in October 2026, 66.1% of 3,591 eligible beneficiaries (−1.3 pts since October 2025). Aware Integrated, Inc. is the largest parent organization with 55% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 3,744 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 602 members here are in plans that terminate or leave the county, and Allina Health and Aetna Insurance Holding Company, Humana Inc. leave. MA plans offered go from 21 to 13.
Parent organizations in Sibley County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Aware Integrated, Inc. | 1,282 | +2 | 54.5% |
| Allina Health and Aetna Insurance Holding Company | 525 | +187 | 22.3% |
| Medica Holding Company | 369 | +154 | 15.7% |
| South Country Health Alliance | 117 | −2 | 5.0% |
| Humana Inc. | 39 | −33 | 1.7% |
| UnitedHealth Group, Inc. | 20 | −142 | 0.9% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 164 beneficiaries in Sibley County were assigned to 7 Medicare Shared Savings Program ACOs, 23.4% of assignable Original Medicare beneficiaries. Together, roughly 74% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.