Medicare Advantage in Buffalo County, South Dakota
23 people in Buffalo County, South Dakota were enrolled in Medicare Advantage in October 2026, 9.5% of 241 eligible beneficiaries (+1.9 pts since October 2025). CVS Health Corporation is the largest parent organization with 100% of reported enrollment; 1 parent organizations have 11 or more members and the HHI is 10,000 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 0 members here are in plans that terminate or leave the county. MA plans offered go from 11 to 6.
Parent organizations in Buffalo County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 14 | new | 100.0% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 30 beneficiaries in Buffalo County were assigned to 2 Medicare Shared Savings Program ACOs, 24.1% of assignable Original Medicare beneficiaries. Together, roughly 31% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.