Medicare Advantage in Davidson County, Tennessee
59,304 people in Davidson County, Tennessee were enrolled in Medicare Advantage in October 2026, 56.1% of 105,681 eligible beneficiaries (−0.5 pts since October 2025). Health Care Service Corporation is the largest parent organization with 32% of reported enrollment; 12 parent organizations have 11 or more members and the HHI is 2,161 (highly concentrated). For 2027, 4,654 members here are in plans that terminate or leave the county, and Centene Corporation leaves. MA plans offered go from 44 to 37.
Parent organizations in Davidson County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Health Care Service Corporation | 19,024 | +1,141 | 32.2% |
| UnitedHealth Group, Inc. | 12,885 | −2,073 | 21.8% |
| BlueCross BlueShield of Tennessee | 10,822 | +566 | 18.3% |
| Humana Inc. | 9,906 | +986 | 16.8% |
| Elevance Health, Inc. | 2,816 | −144 | 4.8% |
| CVS Health Corporation | 1,616 | +17 | 2.7% |
| Devoted Health, Inc. | 726 | +296 | 1.2% |
| Centene Corporation | 668 | −99 | 1.1% |
| Zing Health Consolidator, Inc | 340 | +92 | 0.6% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 227 | −4 | 0.4% |
| Missouri Healthcare Advisors, LLC | 57 | +17 | under 0.1% |
| Highmark Health | 21 | +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, 16,316 beneficiaries in Davidson County were assigned to 188 Medicare Shared Savings Program ACOs, 56.4% of assignable Original Medicare beneficiaries. Together, roughly 81% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.