Medicare Advantage in Park County, Colorado
2,003 people in Park County, Colorado were enrolled in Medicare Advantage in October 2026, 43.2% of 4,634 eligible beneficiaries (−1.4 pts since October 2025). Humana Inc. is the largest parent organization with 40% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 2,443 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 323 members here are in plans that terminate or leave the county, and CVS Health Corporation leaves. MA plans offered go from 28 to 15.
Parent organizations in Park County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 772 | +230 | 39.6% |
| UnitedHealth Group, Inc. | 325 | −495 | 16.7% |
| Devoted Health, Inc. | 294 | +94 | 15.1% |
| CVS Health Corporation | 271 | +108 | 13.9% |
| Kaiser Foundation Health Plan, Inc. | 254 | +41 | 13.0% |
| Intermountain Health Care, Inc. | 32 | new | 1.6% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 372 beneficiaries in Park County were assigned to 29 Medicare Shared Savings Program ACOs, 24.0% of assignable Original Medicare beneficiaries. Together, roughly 57% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.