Medicare Advantage in Garfield County, Colorado
1,330 people in Garfield County, Colorado were enrolled in Medicare Advantage in October 2026, 12.4% of 10,751 eligible beneficiaries (−14.5 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 92% of reported enrollment; 5 parent organizations have 11 or more members and the HHI is 8,538 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 403 members here are in plans that terminate or leave the county. MA plans offered go from 0 to 0.
Parent organizations in Garfield County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 1,173 | −1,505 | 92.3% |
| CVS Health Corporation | 50 | −2 | 3.9% |
| Humana Inc. | 23 | −8 | 1.8% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 13 | −3 | 1.0% |
| Elevance Health, Inc. | 12 | new | 0.9% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 3,103 beneficiaries in Garfield County were assigned to 51 Medicare Shared Savings Program ACOs, 54.2% of assignable Original Medicare beneficiaries. Together, roughly 60% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.