Medicare Advantage in La Plata County, Colorado
4,163 people in La Plata County, Colorado were enrolled in Medicare Advantage in October 2026, 30.2% of 13,795 eligible beneficiaries (−1.3 pts since October 2025). CVS Health Corporation is the largest parent organization with 51% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 3,586 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 973 members here are in plans that terminate or leave the county. MA plans offered go from 12 to 7.
Parent organizations in La Plata County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 2,095 | +498 | 50.7% |
| UnitedHealth Group, Inc. | 1,187 | −694 | 28.7% |
| Humana Inc. | 480 | +139 | 11.6% |
| Health Care Service Corporation | 318 | +8 | 7.7% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 28 | +2 | 0.7% |
| Elevance Health, Inc. | 27 | +1 | 0.7% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,525 beneficiaries in La Plata County were assigned to 72 Medicare Shared Savings Program ACOs, 24.5% of assignable Original Medicare beneficiaries. Together, roughly 47% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.