Medicare Advantage in Teller County, Colorado
4,102 people in Teller County, Colorado were enrolled in Medicare Advantage in October 2026, 53.3% of 7,703 eligible beneficiaries (−1.1 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 52% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 3,743 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 360 members here are in plans that terminate or leave the county, and CVS Health Corporation leaves. MA plans offered go from 34 to 21.
Parent organizations in Teller County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 2,108 | −223 | 51.8% |
| Humana Inc. | 1,279 | +337 | 31.5% |
| CVS Health Corporation | 239 | −20 | 5.9% |
| Kaiser Foundation Health Plan, Inc. | 157 | +30 | 3.9% |
| Devoted Health, Inc. | 124 | −39 | 3.0% |
| Intermountain Health Care, Inc. | 83 | +33 | 2.0% |
| Elevance Health, Inc. | 64 | +17 | 1.6% |
| Health Care Service Corporation | 12 | −87 | 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, 1,341 beneficiaries in Teller County were assigned to 56 Medicare Shared Savings Program ACOs, 62.8% of assignable Original Medicare beneficiaries. Together, roughly 83% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.