Medicare Advantage in Spokane County, Washington
71,159 people in Spokane County, Washington were enrolled in Medicare Advantage in October 2026, 57.7% of 123,281 eligible beneficiaries (−0.1 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 60% of reported enrollment; 16 parent organizations have 11 or more members and the HHI is 3,994 (highly concentrated). For 2027, 9,954 members here are in plans that terminate or leave the county, and Providence St Joseph Health leaves. MA plans offered go from 32 to 25.
Parent organizations in Spokane County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 42,801 | −616 | 60.3% |
| Kaiser Foundation Health Plan, Inc. | 10,166 | +203 | 14.3% |
| Humana Inc. | 7,954 | +2,508 | 11.2% |
| CVS Health Corporation | 3,021 | −1,379 | 4.3% |
| SCAN Group | 1,768 | new | 2.5% |
| Molina Healthcare, Inc. | 1,412 | −363 | 2.0% |
| Centene Corporation | 866 | +26 | 1.2% |
| Providence St Joseph Health | 832 | −131 | 1.2% |
| Community Health Plan of Washington | 805 | −348 | 1.1% |
| Health Care Service Corporation | 542 | +286 | 0.8% |
| Elevance Health, Inc. | 382 | −3 | 0.5% |
| Highmark Health | 223 | −18 | 0.3% |
| Providence Health & Services | 156 | +15 | 0.2% |
| California Physicians' Service | 41 | 0 | under 0.1% |
| Cambia Health Solutions, Inc. | 41 | −412 | 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, 23,366 beneficiaries in Spokane County were assigned to 119 Medicare Shared Savings Program ACOs, 65.6% of assignable Original Medicare beneficiaries. Together, roughly 85% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.