Medicare Advantage in Douglas County, South Dakota
230 people in Douglas County, South Dakota were enrolled in Medicare Advantage in October 2026, 28.2% of 817 eligible beneficiaries (−0.8 pts since October 2025). Medica Holding Company is the largest parent organization with 48% of reported enrollment; 4 parent organizations have 11 or more members and the HHI is 3,450 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 62 members here are in plans that terminate or leave the county, and Blue Cross Blue Shield of Michigan Mutual Ins. Co. leaves. MA plans offered go from 16 to 9.
Parent organizations in Douglas County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Medica Holding Company | 106 | +17 | 48.0% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 62 | −7 | 28.1% |
| UnitedHealth Group, Inc. | 40 | +4 | 18.1% |
| Sanford Health | 13 | new | 5.9% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 209 beneficiaries in Douglas County were assigned to 5 Medicare Shared Savings Program ACOs, 40.5% of assignable Original Medicare beneficiaries. Together, roughly 57% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.