Record · State
Medicare Advantage plans in Washington
CMS lists 115 Medicare Advantage plans across 39 Washington counties for 2027, from 14 organizations. Pierce County has the most, 66, and Klickitat County the fewest, 11. Every county can also choose from the state’s 8 stand-alone Part D drug plans. Figures as CMS approved them, last updated by CMS on September 22, 2026.
Washington, in 2027
- 115
- Medicare Advantage plans
- Offered in at least one county.
- 39
- Counties
- Where CMS lists a plan.
- 14
- Organizations
- Parent organizations offering a plan.
- 75
- With a $0 premium
- Medicare Advantage plans whose monthly premium CMS gives as $0.
- 44
- Special Needs Plans
- Open only to people who meet their criteria.
- 8
- Stand-alone drug plans
- Sold across the state, not by county.
The 39 counties, by how many plans CMS lists
4 more columns on a wider screen
| County | Plans |
|---|---|
| Pierce County | 66 |
| Snohomish County | 60 |
| Thurston County | 60 |
| King County | 59 |
| Clark County | 57 |
| Kitsap County | 56 |
| Spokane County | 47 |
| Lewis County | 45 |
| Cowlitz County | 42 |
| Skagit County | 42 |
| Mason County | 37 |
| Jefferson County | 36 |
| Wahkiakum County | 34 |
| Skamania County | 30 |
| Franklin County | 28 |
| Whatcom County | 28 |
| Benton County | 27 |
| Island County | 27 |
| Walla Walla County | 25 |
| Pend Oreille County | 21 |
| Columbia County | 20 |
| Garfield County | 20 |
| Kittitas County | 20 |
| Lincoln County | 20 |
| Yakima County | 20 |
| Douglas County | 19 |
| Whitman County | 19 |
| Adams County | 18 |
| Pacific County | 18 |
| San Juan County | 18 |
| Chelan County | 17 |
| Grant County | 17 |
| Okanogan County | 17 |
| Asotin County | 16 |
| Clallam County | 14 |
| Ferry County | 14 |
| Grays Harbor County | 13 |
| Stevens County | 13 |
| Klickitat County | 11 |
Ranked by the number of Medicare Advantage plans CMS lists; counties with the same number share a rank. A higher count is more plans listed, not better plans. The state’s 8 stand-alone drug plans are available in every county and are not in these counts.
Sources
- CMS Medicare Advantage and Part D plan landscape — Centers for Medicare & Medicaid Services · U.S. Government work · retrieved October 3, 2026
Compiled automatically from CMS Medicare Advantage and Part D plan landscape by a checked SQL query · Editor: Kian O'Connor · How this site is built
Data retrieved