Medicare Advantage in Collier County, Florida
46,436 people in Collier County, Florida were enrolled in Medicare Advantage in October 2026, 37.4% of 124,212 eligible beneficiaries (−0.2 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 38% of reported enrollment; 18 parent organizations have 11 or more members and the HHI is 2,956 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 12,091 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 43 to 32.
Parent organizations in Collier County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 17,597 | −544 | 38.0% |
| Humana Inc. | 14,836 | +3,275 | 32.1% |
| CVS Health Corporation | 9,949 | −974 | 21.5% |
| Guidewell Mutual Holding Corporation | 1,485 | −497 | 3.2% |
| Elevance Health, Inc. | 802 | +162 | 1.7% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 774 | −46 | 1.7% |
| Centene Corporation | 255 | −44 | 0.6% |
| Health Care Service Corporation | 160 | −294 | 0.3% |
| Highmark Health | 115 | −5 | 0.2% |
| Chapters Health System, Inc. | 104 | +12 | 0.2% |
| Horizon Mutual Holdings, Inc | 42 | +21 | under 0.1% |
| Athena Healthcare Holdings, LLC | 25 | +12 | under 0.1% |
| Lifetime Healthcare, Inc. | 24 | +1 | under 0.1% |
| Blue Cross and Blue Shield of Massachusetts, Inc. | 23 | +5 | under 0.1% |
| Aware Integrated, Inc. | 18 | new | 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, 22,778 beneficiaries in Collier County were assigned to 343 Medicare Shared Savings Program ACOs, 37.3% of assignable Original Medicare beneficiaries. Together, roughly 61% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.