Medicare Advantage in Minnehaha County, South Dakota
17,692 people in Minnehaha County, South Dakota were enrolled in Medicare Advantage in October 2026, 41.9% of 42,260 eligible beneficiaries (−1.7 pts since October 2025). Medica Holding Company is the largest parent organization with 44% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 2,755 (highly concentrated). For 2027, 5,206 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 14.
Parent organizations in Minnehaha County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Medica Holding Company | 7,808 | +3,678 | 44.4% |
| Sanford Health | 3,078 | +600 | 17.5% |
| CVS Health Corporation | 2,700 | −1,056 | 15.3% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 2,058 | −1,304 | 11.7% |
| UnitedHealth Group, Inc. | 1,833 | −1,115 | 10.4% |
| Humana Inc. | 66 | −374 | 0.4% |
| Elevance Health, Inc. | 42 | −2 | 0.2% |
| Aware Integrated, Inc. | 13 | new | under 0.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 6,926 beneficiaries in Minnehaha County were assigned to 233 Medicare Shared Savings Program ACOs, 41.1% of assignable Original Medicare beneficiaries. Together, roughly 66% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.