Medicare Advantage in Delta County, Colorado
4,985 people in Delta County, Colorado were enrolled in Medicare Advantage in October 2026, 46.7% of 10,664 eligible beneficiaries (−1.2 pts since October 2025). Humana Inc. is the largest parent organization with 57% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 3,795 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 981 members here are in plans that terminate or leave the county. MA plans offered go from 20 to 10.
Parent organizations in Delta County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 2,803 | +392 | 56.9% |
| UnitedHealth Group, Inc. | 875 | −585 | 17.8% |
| CVS Health Corporation | 652 | +66 | 13.2% |
| Intermountain Health Care, Inc. | 352 | +145 | 7.1% |
| Volunteers of America National Services | 175 | +19 | 3.6% |
| Health Care Service Corporation | 53 | −80 | 1.1% |
| Elevance Health, Inc. | 15 | 0 | 0.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 2,602 beneficiaries in Delta County were assigned to 37 Medicare Shared Savings Program ACOs, 64.1% of assignable Original Medicare beneficiaries. Together, roughly 81% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.