Medicare Advantage in Pierce County, Washington
92,114 people in Pierce County, Washington were enrolled in Medicare Advantage in October 2026, 51.9% of 177,349 eligible beneficiaries (+0.05 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 55% of reported enrollment; 18 parent organizations have 11 or more members and the HHI is 3,506 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 12,374 members here are in plans that terminate or leave the county. MA plans offered go from 40 to 35.
Parent organizations in Pierce County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 50,722 | +2,746 | 55.2% |
| Humana Inc. | 12,866 | +2,189 | 14.0% |
| Kaiser Foundation Health Plan, Inc. | 10,785 | −140 | 11.7% |
| CVS Health Corporation | 9,876 | −3,598 | 10.7% |
| Devoted Health, Inc. | 1,562 | +843 | 1.7% |
| Cambia Health Solutions, Inc. | 1,420 | −949 | 1.5% |
| SCAN Group | 1,365 | new | 1.5% |
| Molina Healthcare, Inc. | 1,234 | −398 | 1.3% |
| Centene Corporation | 791 | −32 | 0.9% |
| Elevance Health, Inc. | 419 | −1 | 0.5% |
| MultiCare Health Systems | 282 | +93 | 0.3% |
| Community Health Plan of Washington | 191 | −77 | 0.2% |
| Marquis Companies I, Inc. | 171 | new | 0.2% |
| Providence Health & Services | 80 | +10 | under 0.1% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 47 | +4 | 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, 33,608 beneficiaries in Pierce County were assigned to 173 Medicare Shared Savings Program ACOs, 66.4% of assignable Original Medicare beneficiaries. Together, roughly 84% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.