Medicare Advantage in Custer County, Colorado
907 people in Custer County, Colorado were enrolled in Medicare Advantage in October 2026, 41.7% of 2,175 eligible beneficiaries (−0.7 pts since October 2025). Humana Inc. is the largest parent organization with 40% of reported enrollment; 4 parent organizations have 11 or more members and the HHI is 2,823 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 225 members here are in plans that terminate or leave the county, and CVS Health Corporation leaves. MA plans offered go from 17 to 8.
Parent organizations in Custer County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 344 | +144 | 40.2% |
| Devoted Health, Inc. | 196 | +128 | 22.9% |
| UnitedHealth Group, Inc. | 168 | −372 | 19.6% |
| CVS Health Corporation | 148 | +82 | 17.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 162 beneficiaries in Custer County were assigned to 21 Medicare Shared Savings Program ACOs, 19.0% of assignable Original Medicare beneficiaries. Together, roughly 53% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.