Medicare Advantage in Big Horn County, Wyoming
261 people in Big Horn County, Wyoming were enrolled in Medicare Advantage in October 2026, 8.6% of 3,049 eligible beneficiaries (−5.7 pts since October 2025). Blue Cross Blue Shield of Michigan Mutual Ins. Co. is the largest parent organization with 80% of reported enrollment; 3 parent organizations have 11 or more members and the HHI is 6,662 (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 3 to 3.
Parent organizations in Big Horn County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 195 | new | 80.2% |
| UnitedHealth Group, Inc. | 33 | −362 | 13.6% |
| CVS Health Corporation | 15 | −1 | 6.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 276 beneficiaries in Big Horn County were assigned to 14 Medicare Shared Savings Program ACOs, 14.1% of assignable Original Medicare beneficiaries. Together, roughly 21% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.