Medicare Advantage in Bonner County, Idaho
6,231 people in Bonner County, Idaho were enrolled in Medicare Advantage in October 2026, 38.5% of 16,204 eligible beneficiaries (−4.4 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 40% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 3,284 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 2,837 members here are in plans that terminate or leave the county, and PacificSource leaves. MA plans offered go from 10 to 8.
Parent organizations in Bonner County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 2,492 | +522 | 40.4% |
| PacificSource | 2,399 | +575 | 38.9% |
| Gemstone Holdings, Inc. | 624 | −849 | 10.1% |
| Molina Healthcare, Inc. | 312 | −57 | 5.1% |
| CVS Health Corporation | 156 | +5 | 2.5% |
| Humana Inc. | 88 | +19 | 1.4% |
| Elevance Health, Inc. | 67 | +9 | 1.1% |
| California Physicians' Service | 18 | +1 | 0.3% |
| Highmark Health | 11 | new | 0.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 3,165 beneficiaries in Bonner County were assigned to 72 Medicare Shared Savings Program ACOs, 53.3% of assignable Original Medicare beneficiaries. Together, roughly 71% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.