Medicare Advantage in DeKalb County, Tennessee
3,107 people in DeKalb County, Tennessee were enrolled in Medicare Advantage in October 2026, 61.7% of 5,036 eligible beneficiaries (−0.3 pts since October 2025). Health Care Service Corporation is the largest parent organization with 33% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 2,268 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 231 members here are in plans that terminate or leave the county, and Centene Corporation leaves. MA plans offered go from 36 to 30.
Parent organizations in DeKalb County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Health Care Service Corporation | 1,013 | −93 | 32.8% |
| UnitedHealth Group, Inc. | 708 | −91 | 22.9% |
| BlueCross BlueShield of Tennessee | 691 | +109 | 22.4% |
| Humana Inc. | 354 | +100 | 11.5% |
| Elevance Health, Inc. | 130 | −1 | 4.2% |
| CVS Health Corporation | 90 | +11 | 2.9% |
| Missouri Healthcare Advisors, LLC | 44 | −7 | 1.4% |
| Centene Corporation | 32 | +15 | 1.0% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 23 | −2 | 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, 909 beneficiaries in DeKalb County were assigned to 30 Medicare Shared Savings Program ACOs, 62.2% of assignable Original Medicare beneficiaries. Together, roughly 86% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.