Medicare Advantage in Denver County, Colorado
59,589 people in Denver County, Colorado were enrolled in Medicare Advantage in October 2026, 59.0% of 100,927 eligible beneficiaries (−0.8 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 36% of reported enrollment; 15 parent organizations have 11 or more members and the HHI is 2,425 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 4,458 members here are in plans that terminate or leave the county. MA plans offered go from 43 to 35.
Parent organizations in Denver County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 21,250 | −1,826 | 35.8% |
| Kaiser Foundation Health Plan, Inc. | 16,440 | +104 | 27.7% |
| Humana Inc. | 10,026 | +3,057 | 16.9% |
| Denver Health and Hospital Authority | 4,092 | −41 | 6.9% |
| CVS Health Corporation | 3,372 | −412 | 5.7% |
| Devoted Health, Inc. | 1,947 | +472 | 3.3% |
| Total Community Options, Inc. | 693 | +12 | 1.2% |
| Elevance Health, Inc. | 587 | +131 | 1.0% |
| Intermountain Health Care, Inc. | 372 | −1 | 0.6% |
| Health Care Service Corporation | 255 | −821 | 0.4% |
| Longevity Health Founders, LLC | 136 | −8 | 0.2% |
| Perennial Consortium, LLC | 104 | +12 | 0.2% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 75 | +3 | 0.1% |
| Hospice of Metro Denver, Inc | 29 | +15 | under 0.1% |
| Highmark Health | 13 | +1 | under 0.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 12,791 beneficiaries in Denver County were assigned to 164 Medicare Shared Savings Program ACOs, 55.9% of assignable Original Medicare beneficiaries. Together, roughly 82% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.