2026 Medicare Advantage Plans in King County, WA
Last update: . Enrollment data updated: June 13, 2026
In King County, WA, there are 37 Medicare Advantage plans available for 2026. Of these, 22 offer a $0 monthly premium, and about 40% are rated 4 stars or higher based on CMS quality ratings.
Medicare Advantage Special Needs Plans (SNPs) are not included in the figures shown above. View Special Needs Plans in King County, WA. Or explore all Medicare Options available in King County, WA.
Medicare Advantage PPO Plans
Preferred Provider Organization (PPO) plans allow members to use both in-network and out-of-network providers. Out-of-network care typically costs more, but PPOs offer greater flexibility in how care is accessed.
What is the total number of PPO plans offered in King?
King County has 20 PPO plans for 2026, with 36,612 enrolled.
How much do PPO plans cost in King?
The typical PPO premium in King is $49.75, and 11 plans have no monthly premium.
Medicare Advantage HMO Plans
HMO plans typically require members to use in-network providers and facilities, except in emergencies. In return, HMOs often offer lower monthly premiums and reduced cost-sharing.
- Total HMO Plans
- 10
- Average Monthly Premium
- $54.40/mo
- Total HMO Enrollment
- 43,567
- $0 Premium HMO Plans
- 6
- Average MOOP
- $5,195
- Top HMO by Enrollment
- Kaiser Permanente Medicare Advantage Essential Kng (HMO) — 13,432 enrollees
- HMO Plans Without Drug Coverage
- 1
| Health Plan Name | CMS Rating* | Premium Per Mo | MOOP | PDP Ded. | CMS Plan ID |
|---|---|---|---|---|---|
| Humana Gold Plus H1036-321 | $0 | $5,900 | $615 | H1036-321-0 | |
| Kaiser Permanente Medicare Advantage Basic | $0 | $4,200 | N/A | H5050-001-0 | |
| Kaiser Permanente Medicare Advantage Essential Kng | $69 | $4,950 | $0 | H5050-024-0 | |
| Kaiser Permanente Medicare Advantage Key King | $0 | $6,750 | $0 | H5050-028-0 | |
| Kaiser Permanente Medicare Advantage Optimal | $358 | $3,150 | $0 | H5050-004-0 | |
| Aetna Medicare Signature | $0 | $6,750 | $615 | H3748-003-0 | |
| Aetna Medicare Signature Advantage | $0 | $6,750 | $615 | H3931-126-0 | |
| Humana Gold Plus H5619-057 | $0 | $5,900 | $615 | H5619-057-0 | |
| Humana Gold Plus H5619-059 | $54 | $3,400 | $100 | H5619-059-0 | |
| Humana Gold Plus H5619-061 | $63 | $4,200 | $615 | H5619-061-0 |
- What is the average monthly premium for HMO plans?
- HMO plans in King cost $54.40 per month on average.
- Which HMO plan is most popular in King?
- The most popular HMO plan in King is Kaiser Permanente Medicare Advantage Essential Kng (HMO), with 13,432 enrollees.
- How many HMO plans in King do not include drug coverage?
- There are 1 HMO plans in King without prescription drug coverage.
Medicare Advantage HMO-POS Plans
HMO Point-of-Service (HMO-POS) plans combine HMO network requirements with limited out-of-network access. Care outside the network typically costs more, but HMO-POS plans provide added flexibility compared with standard HMOs.
- Total HMO-POS Plans 7
- Average Monthly Premium $16.71/mo
- Total HMO-POS Enrollment 43,736
- $0 Premium HMO-POS Plans 5
- Average MOOP $6,493
- Top HMO-POS by Enrollment AARP Medicare Advantage Extras from UHC WA-14 (HMO-POS) — 21,255 enrollees
- HMO-POS Plans Without Drug Coverage 0
| Health Plan Name | CMS Rating* | Premium Per Mo | MOOP | PDP Ded. | CMS Plan ID |
|---|---|---|---|---|---|
| AARP Medicare Advantage Essentials from UHC WA-6 | $0 | $6,300 | $355 | H3805-017-0 | |
| AARP Medicare Advantage Essentials from UHC WA-7 | $0 | $5,900 | $355 | H3805-032-0 | |
| AARP Medicare Advantage Extras from UHC WA-14 | $0 | $6,700 | $440 | H3805-044-0 | |
| AARP Medicare Advantage from UHC WA-0005 | $38 | $5,900 | $355 | H3805-015-0 | |
| AARP Medicare Advantage from UHC WA-0010 | $79 | $4,900 | $355 | H3805-037-0 | |
| Wellcare Giveback | $0 | $9,250 | $615 | H0029-009-0 | |
| Wellcare Simple | $0 | $6,500 | $615 | H0029-011-0 |
What is the total number of HMO-POS plans in King?
There are 7 HMO-POS plans in 2026, covering 43,736 enrollees.
How much do HMO-POS plans cost in King?
The average HMO-POS premium in King is $16.71 per month, with 5 plans offering $0 premiums.
What is the leading HMO-POS plan in King?
AARP Medicare Advantage Extras from UHC WA-14 (HMO-POS) is the top HMO-POS in King, with 21,255 enrollees.
What is the number of HMO-POS plans without Part D coverage in King?
0 HMO-POS plans in King do not include prescription drug coverage.
The table below shows CMS star ratings for Medicare Advantage plans in King County, WA for 2026.
| Rating Category | Number of Plans | Percent of Plans |
|---|---|---|
| 5 Stars | No 5-star plans available. | 0% |
| 4 Stars (includes 5 Stars) | 14 | 40% |
| 3 Stars | 20 | 57% |
| Below 3 Stars | 1 | 3% |
| Not Rated | 2 | 5% |
| Average Rating | 3.71 | |
* Medicare Advantage star ratings are determined by CMS each year using a standardized 5-star rating system.
- CMS.gov, Medicare Advantage Landscape Source Files — Last accessed June 13, 2026
- CMS.gov, Medicare Part C & D Performance Data — Last accessed June 13, 2026
- CMS.gov, Medicare Advantage & Part D Contract and Enrollment Data — Last accessed June 13, 2026
This page presents county-level Medicare Advantage (MA/MAPD) data, including plan counts, enrollment totals, averages, and percentage distributions, derived from CMS datasets using a standardized aggregation approach.
Data sources and methodology documentation .
- Medicare.gov, "Compare types of Medicare Advantage Plans" — Last accessed 25 May, 2025
- Medicare.gov, "Your coverage options" — Last accessed 25 May, 2025
- AARP.org, "The Big Choice: Original Medicare vs. Medicare Advantage" — Last accessed 25 May, 2025
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Data provenance documentation is maintained in alignment with the U.S. Core Data for Interoperability (USCDI) Provenance standard .
Page content independently curated and maintained by David W. Bynon, Editorial Steward, using a standardized, data-driven methodology for accurate, non-commercial Medicare plan interpretation and resolution.