Medicare Advantage in Teton County, Idaho
289 people in Teton County, Idaho were enrolled in Medicare Advantage in October 2026, 13.4% of 2,160 eligible beneficiaries (+0.9 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 74% of reported enrollment; 4 parent organizations have 11 or more members and the HHI is 5,708 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 151 members here are in plans that terminate or leave the county. MA plans offered go from 6 to 3.
Parent organizations in Teton County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 195 | +11 | 73.9% |
| Humana Inc. | 31 | +4 | 11.7% |
| CVS Health Corporation | 25 | −2 | 9.5% |
| Molina Healthcare, Inc. | 13 | new | 4.9% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,088 beneficiaries in Teton County were assigned to 16 Medicare Shared Savings Program ACOs, 72.5% of assignable Original Medicare beneficiaries. Together, roughly 76% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.