Medicare Advantage in Lake County, Florida
74,164 people in Lake County, Florida were enrolled in Medicare Advantage in October 2026, 58.8% of 126,143 eligible beneficiaries (+1.3 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 33% of reported enrollment; 21 parent organizations have 11 or more members and the HHI is 2,408 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 8,986 members here are in plans that terminate or leave the county, and Health First Shared Services, Inc. leaves. MA plans offered go from 55 to 48.
Parent organizations in Lake County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 24,736 | −462 | 33.4% |
| Humana Inc. | 23,721 | +2,468 | 32.1% |
| Elevance Health, Inc. | 8,826 | +527 | 11.9% |
| CVS Health Corporation | 5,942 | +111 | 8.0% |
| Guidewell Mutual Holding Corporation | 4,896 | −723 | 6.6% |
| Devoted Health, Inc. | 1,552 | +502 | 2.1% |
| Ultimate Healthcare Holdings, LLC | 1,066 | +747 | 1.4% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 935 | −111 | 1.3% |
| Health Care Service Corporation | 917 | −142 | 1.2% |
| Centene Corporation | 901 | −113 | 1.2% |
| Health First Shared Services, Inc. | 178 | +110 | 0.2% |
| Highmark Health | 116 | +2 | 0.2% |
| Lifetime Healthcare, Inc. | 38 | +5 | under 0.1% |
| Mitchell Family Office | 35 | new | under 0.1% |
| CareFirst, Inc. | 28 | +5 | 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, 12,372 beneficiaries in Lake County were assigned to 296 Medicare Shared Savings Program ACOs, 28.6% of assignable Original Medicare beneficiaries. Together, roughly 71% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.