Medicare Advantage in Delta County, Michigan
6,731 people in Delta County, Michigan were enrolled in Medicare Advantage in October 2026, 56.6% of 11,892 eligible beneficiaries (−0.4 pts since October 2025). Blue Cross Blue Shield of Michigan Mutual Ins. Co. is the largest parent organization with 41% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 3,260 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 0 members here are in plans that terminate or leave the county. MA plans offered go from 16 to 18.
Parent organizations in Delta County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 2,762 | −1,008 | 41.2% |
| Humana Inc. | 2,488 | +1,014 | 37.1% |
| CVS Health Corporation | 712 | +18 | 10.6% |
| DLP Marquette Health Plan, LLC | 585 | new | 8.7% |
| UnitedHealth Group, Inc. | 120 | −4 | 1.8% |
| Elevance Health, Inc. | 45 | −3 | 0.7% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 3,059 beneficiaries in Delta County were assigned to 24 Medicare Shared Savings Program ACOs, 77.2% of assignable Original Medicare beneficiaries. Together, roughly 90% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.