Medicare Advantage plans in Washington, 2027
114 Medicare Advantage plans are sold in Washington for 2027 (124 in 2026); 71 are open to everyone and 43 of those have a $0 premium everywhere they are sold. 156,791 Washington members in September 2026 were in plans that end or leave their county for 2027.
What changes in Washington for 2027?
| In the state | 2026 | 2027 | Change |
|---|---|---|---|
| Plans sold in the state | 124 | 114 | ▼down 10 |
| Plans open to everyone | 88 | 71 | ▼down 17 |
| Plans with a $0 premium everywhere they are sold | 52 | 43 | ▼down 9 |
| Plans that lower the Part B premium | 23 | 16 | ▼down 7 |
Source: CMS Medicare Advantage and Part D landscape files for 2027 (Sept. 22, 2026, revised Sept. 30) and 2026 (Sept. 2, 2026 revision); CMS plan benefit package files, 2027 and 2026.
Which companies sell the most plans in Washington?
Plans open to everyone, by parent company and the brands it sells under, 2027
Source: CMS Medicare Advantage and Part D landscape files for 2027 (Sept. 22, 2026, revised Sept. 30) and 2026 (Sept. 2, 2026 revision).
Which Washington counties lose the most?
Plans end in or leave Washington counties 599 times for 2027. Counties with the most members in those plans come first; each links to its 2027 plan list.
| County | Plans open to all | $0 premium | Plans that end or leave | Their members here |
|---|---|---|---|---|
| King | 30 | 18 | 22 | 26,137 |
| Whatcom | 9 | 6 | 22 | 16,435 |
| Snohomish | 31 | 19 | 26 | 15,120 |
| Pierce | 35 | 23 | 21 | 12,284 |
| Clark | 31 | 18 | 29 | 10,551 |
| Spokane | 25 | 17 | 18 | 9,863 |
| Skagit | 15 | 11 | 25 | 9,331 |
| Yakima | 5 | 2 | 16 | 7,467 |
| Island | 12 | 6 | 20 | 4,689 |
| Thurston | 32 | 20 | 22 | 4,577 |
| Chelan | 8 | 4 | 14 | 4,388 |
| Clallam | 1 | 0 | 16 | 3,788 |
| Benton | 9 | 4 | 16 | 3,588 |
| Mason | 14 | 6 | 17 | 3,261 |
| Kitsap | 28 | 18 | 19 | 3,191 |
| Cowlitz | 21 | 13 | 23 | 2,909 |
| Grant | 8 | 4 | 14 | 2,675 |
| Lewis | 19 | 9 | 16 | 2,635 |
| Grays Harbor | 4 | 0 | 7 | 2,425 |
| Douglas | 7 | 4 | 15 | 1,944 |
| Okanogan | 8 | 4 | 14 | 1,520 |
| Franklin | 10 | 6 | 18 | 1,415 |
| Walla Walla | 9 | 4 | 16 | 1,337 |
| Asotin | 5 | 3 | 7 | 1,057 |
| Jefferson | 12 | 8 | 17 | 632 |
| Whitman | 5 | 3 | 9 | 622 |
| Pacific | 3 | 1 | 11 | 560 |
| Stevens | 4 | 2 | 7 | 492 |
| Pend Oreille | 6 | 3 | 12 | 484 |
| Adams | 6 | 3 | 12 | 411 |
| San Juan | 4 | 2 | 12 | 361 |
| Ferry | 6 | 3 | 12 | 355 |
| Columbia | 6 | 3 | 12 | 87 |
| Klickitat | 3 | 1 | 8 | 60 |
| Skamania | 11 | 8 | 12 | 44 |
| Kittitas | 5 | 2 | 9 | 39 |
| Wahkiakum | 14 | 9 | 12 | 24 |
| Garfield | 6 | 3 | 12 | 22 |
| Lincoln | 6 | 3 | 9 | 11 |
Source: CMS Medicare Advantage and Part D landscape files for 2027 (Sept. 22, 2026, revised Sept. 30) and 2026 (Sept. 2, 2026 revision); CMS plan crosswalk from 2026 to 2027 (Oct. 1, 2026); CMS monthly enrollment by plan and by county, September 2026 (CMS hides counts under 11).
Which large plans sold in Washington end?
| 2026 plan | Brand | Members in all states, Sept. 2026 |
|---|---|---|
| Wellcare SimpleH0029-011 | Wellcare | 22,819 |
| AARP Medicare Advantage from UHC WA-12H2001-087 | UnitedHealthcare | 19,434 |
| HumanaChoiceH7617-019 | Humana | 9,660 |
| UHC Complete Care WA-13H3805-043 | UnitedHealthcare | 9,249 |
| Providence Medicare Extra + RxH9047-064 | Providence Medicare Advantage Plans | 8,432 |
| AARP Medicare Advantage from UHC WA-0010H3805-037 | UnitedHealthcare | 7,732 |
| AARP Medicare Advantage from UHC WA-16H2001-136 | UnitedHealthcare | 7,124 |
| Aetna Medicare Signature AdvantageH3931-126 | Aetna Medicare | 6,016 |
| Kaiser Permanente Medicare Advantage HarborH5050-017 | Kaiser Permanente | 5,338 |
| AARP Medicare Advantage Patriot No Rx WA-MA01H1278-031 | UnitedHealthcare | 5,244 |
Source: CMS plan crosswalk from 2026 to 2027 (Oct. 1, 2026); CMS monthly enrollment by plan and by county, September 2026 (CMS hides counts under 11).
Which plans in Washington lower the Part B premium?
16 plans open to everyone and sold in at least one Washington county pay part of the Part B premium in 2027; the largest reduction comes first.
| 2027 plan | Brand | Monthly reduction |
|---|---|---|
| Humana USAA Honor GivebackH5216-427 | Humana | $150 best in its area |
| Devoted Choice Giveback 002 WAH8917-002 | Devoted Health | $143 |
| Devoted Giveback 007 WAH3515-007 | Devoted Health | $141 |
| Devoted Giveback 012 WAH3515-012 | Devoted Health | $141 |
| AARP Medicare Advantage Patriot No RX WA-MA3H2001-148 | UnitedHealthcare | $140 |
| AARP Medicare Advantage Patriot No Rx WA-MA02H3805-035 | UnitedHealthcare | $135 |
| Devoted Giveback 002 WAH3515-002 | Devoted Health | $118 |
| Humana USAA Honor GivebackH7617-021 | Humana | $100 |
| Aetna Medicare EagleH5521-330 | Aetna Medicare | $85 |
| Devoted Giveback Extras 022 WAH3515-022 | Devoted Health | $75 |
| Humana Essentials Plus GivebackH1036-319 | Humana | $71 |
| Devoted Giveback Extras 020 WAH3515-020 | Devoted Health | $70 |
| Devoted Giveback Extras 021 WAH3515-021 | Devoted Health | $70 |
| Aetna Medicare EagleH3748-019 | Aetna Medicare | $50 |
| MultiCare Health Plan Evergreen EssentialH6194-002 | MultiCare Health Plan Medicare Advantage Evergreen Plans | $50 |
| Humana USAA Honor GivebackH5216-455 | Humana | $43 |
Source: CMS plan benefit package files, 2027 and 2026; CMS Medicare Advantage and Part D landscape files for 2027 (Sept. 22, 2026, revised Sept. 30) and 2026 (Sept. 2, 2026 revision).
789,692 of Washington's 1,590,289 people with Medicare were in a Medicare Advantage plan in September 2026 (50%).
What else should you check?
- Every plan not offered in 2027By company and state
- Part B giveback plansWhere they are sold
- Every statePlan counts for 2027