Medicare Advantage plans in Mason, WA, 2027
Mason, Washington has 14 Medicare Advantage plans open to everyone for 2027 (19 in 2026) and 23 special needs plans, according to the CMS landscape files; 6 of the open plans have a $0 premium. 17 plans that served the county in 2026 end or leave it, with 3,261 members living here in September 2026.
What changes in Mason for 2027?
| In the county | 2026 | 2027 | Change |
|---|---|---|---|
| Plans open to everyone | 19 | 14 | ▼down 5 |
| Special needs plans | 25 | 23 | ▼down 2 |
| Plans with a $0 premium | 9 | 6 | ▼down 3 |
| Plans that lower the Part B premium | 5 | 5 | no change |
| Median out-of-pocket limit | $6,500 | $6,775 | ▲up $275 |
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 plans can anyone in Mason join?
| Plan | Premium | Out-of-pocket limit | Part B reduction | 2026 stars |
|---|---|---|---|---|
| Humana USAA Honor GivebackH5216-455 · PPO | $0 | $5,100 | $43 | 3.5 of 5 |
| Devoted Core 006 WAH3515-006 · HMO | $0 | $6,550 | none | not rated |
| Devoted Giveback Extras 020 WAH3515-020 · HMO | $0 | $8,100 | $70 | not rated |
| Humana USAA Honor GivebackH5216-427 · PPO | $0 | $9,150 | $150 | 3.5 of 5 |
| Humana USAA Honor GivebackH7617-021 · PPO | $0 | $9,150 | $100 | 4.5 of 5 |
| Devoted Giveback 007 WAH3515-007 · HMO | $0 | $9,850 | $141 | not rated |
| AARP Medicare Advantage from UHC WA-18H2001-146 · PPO | $10 | $7,150 | none | 4.5 of 5 |
| Kaiser Permanente Medicare Advantage Vital SoundH5050-032 · HMO | $55 | $6,500 | none | 4 of 5 |
| Humana Gold PlusH5619-061 · HMO | $86 | $4,200 | none | 3 of 5 |
| HumanaChoiceH5216-048 · PPO | $97 | $7,000 | none | 3.5 of 5 |
| Kaiser Permanente Medicare Advantage BasicH5050-001 · HMO | $106 | $4,200 | none | 4 of 5 |
| HumanaChoiceH7617-016 · PPO | $110 | $7,000 | none | 4.5 of 5 |
| Kaiser Permanente Medicare Advantage EssentialH5050-009 · HMO | $119 | $3,950 | none | 4 of 5 |
| Kaiser Permanente Medicare Advantage OptimalH5050-004 · HMO | $373 | $3,150 | none | 4 of 5 |
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. Stars are the contract's 2026 rating. confirm on Medicare Plan Finder.
Which plans leave Mason in 2027?
Members of these plans here choose a 2027 plan during open enrollment, October 15 to December 7, 2026; choosing by December 31 means no gap; because their plan is leaving the county, they can still join until the end of February 2027, with coverage from the first of the next month. Each plan's page says what happens to its members.
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); CMS Medicare Advantage and Part D landscape files for 2027 (Sept. 22, 2026, revised Sept. 30) and 2026 (Sept. 2, 2026 revision).
Which special needs plans are sold here?
Open only to people with Medicaid as well as Medicare, with certain chronic conditions, or living in an institution.
| Plan | Who can join | Premium |
|---|---|---|
| UHC Dual Advantage WA-V1H5008-015 | Dual-Eligible | $0 |
| Devoted C-SNP Enhanced 008 WAH3515-008 | Chronic or Disabling Condition | $0 |
| Devoted C-SNP Giveback Extras 009 WAH3515-009 | Chronic or Disabling Condition | $0 |
| Wellcare Coordinated Care Dual Liberty SyncH0029-007 | Dual-Eligible | $0 |
| Wellcare Coordinated Care Dual AccessH0029-008 | Dual-Eligible | $0 |
| UHC Nursing Home Plan WA-F001H0710-031 | Institutional | $0 |
| UHC Dual Complete WA-S5H2001-051 | Dual-Eligible | $0 |
| UHC Dual Complete WA-Q1H2001-079 | Dual-Eligible | $0 |
| Devoted C-SNP Plus 010 WAH3515-010 | Chronic or Disabling Condition | $0 |
| UHC Complete Care Support WA-1AH3805-049 | Chronic or Disabling Condition | $0 |
| UHC Dual Complete WA-S6H5008-002 | Dual-Eligible | $0 |
| UHC Dual Complete WA-Q2H5008-019 | Dual-Eligible | $0 |
| Humana Dual SelectH5619-165 | Dual-Eligible | $0 |
| Humana Dual SelectH5619-166 | Dual-Eligible | $0 |
| Humana Gold Plus SNP-DEH5619-167 | Dual-Eligible | $0 |
| UHC Dual Advantage WA-V2H2001-080 | Dual-Eligible | $6.30 |
| Molina Medicare Complete CareH5823-013 | Dual-Eligible | $6.30 |
| Community Health Plan of WA Dual CompleteH5826-014 | Dual-Eligible | $6.30 |
| Community Health Plan of WA Dual SelectH5826-017 | Dual-Eligible | $6.30 |
| Wellpoint Full Dual AdvantageH8849-015 | Dual-Eligible | $6.30 |
| Wellpoint Dual AdvantageH8849-016 | Dual-Eligible | $6.30 |
| Wellpoint Dual Advantage PlusH8849-017 | Dual-Eligible | $6.30 |
| Molina Medicare ElectH5823-015 | Dual-Eligible | $8.10 |
Source: CMS Medicare Advantage and Part D landscape files for 2027 (Sept. 22, 2026, revised Sept. 30) and 2026 (Sept. 2, 2026 revision).
How many people in Mason use Medicare Advantage?
9,037 of the county's 20,268 people with Medicare were in a Medicare Advantage plan in September 2026, 44.6%; in Washington as a whole the share is 49.7%.
Source: CMS Medicare Advantage state and county penetration, September 2026.
What else should you check?
- Medicare Advantage in WashingtonEvery county of the state
- 8 stand-alone drug plans in WashingtonIf you keep Original Medicare
- Is your plan ending?Every plan not offered in 2027