Medicare Advantage in Kitsap County, Washington
27,074 people in Kitsap County, Washington were enrolled in Medicare Advantage in October 2026, 40.1% of 67,522 eligible beneficiaries (+0.1 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 33% of reported enrollment; 13 parent organizations have 11 or more members and the HHI is 2,494 (highly concentrated). For 2027, 4,608 members here are in plans that terminate or leave the county. MA plans offered go from 32 to 28.
Parent organizations in Kitsap County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 8,829 | +92 | 32.7% |
| Kaiser Foundation Health Plan, Inc. | 7,863 | −233 | 29.2% |
| Humana Inc. | 5,399 | +859 | 20.0% |
| CVS Health Corporation | 3,453 | −363 | 12.8% |
| Devoted Health, Inc. | 625 | +430 | 2.3% |
| Molina Healthcare, Inc. | 234 | −6 | 0.9% |
| Centene Corporation | 189 | +41 | 0.7% |
| Elevance Health, Inc. | 182 | +3 | 0.7% |
| Cambia Health Solutions, Inc. | 70 | −5 | 0.3% |
| Community Health Plan of Washington | 51 | −19 | 0.2% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 30 | +2 | 0.1% |
| California Physicians' Service | 24 | +2 | under 0.1% |
| Health Care Service Corporation | 18 | +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, 18,602 beneficiaries in Kitsap County were assigned to 124 Medicare Shared Savings Program ACOs, 68.9% 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.