Medicare plans in Contra Costa County, CA
11 plans are approved for Contra Costa County, and 5 of them have no monthly premium. 10 carry a CMS star rating.
52.2% of the 230,629 people eligible for Medicare in Contra Costa County are already in a Medicare Advantage plan (September 2026).
All plans · Medicare Advantage · Special Needs Plans · Part D drug plans
| Plan | Premium a month | Most you can pay a year | Drug deductible | Stars | Enrolled here |
|---|---|---|---|---|---|
| Kaiser Permanente Dual Complete North P17 (HMO D-SNP) Kaiser Permanente · HMO D-SNP |
$0 | $9,250 | $615 | 4.0/5 | 7,959 |
| Imperial Senior Value (HMO C-SNP) Imperial Health Plan of California, Inc. · HMO C-SNP |
$0 | $296 | $0 | 3.5/5 | 161 |
| Imperial Dynamic Plan (HMO) Imperial Health Plan of California, Inc. · HMO |
$0 | $296 | $0 | 3.5/5 | 2,278 |
| Imperial Courage Plan (HMO) Imperial Health Plan of California, Inc. · HMO |
$0 | $2,999 | Not published | 3.5/5 | 39 |
| Central Health Dual Access Plan (HMO D-SNP) Central Health Medicare Plan · HMO D-SNP |
$0 | $9,250 | $550 | 3.0/5 | 164 |
| UHC Complete Care Support CA-8AP (HMO-POS C-SNP) UnitedHealthcare · HMO-POS C-SNP |
$8.90 | $9,250 | $615 | 4.0/5 | 690 |
| Contra Costa Health Care Plus (HMO D-SNP) Contra Costa Health Care Plus (HMO D-SNP) · HMO D-SNP |
$12.00 | $9,250 | $615 | Too new to be rated | 578 |
| Kaiser Permanente Sr Adv Basic Contra Costa (HMO) Kaiser Permanente · HMO |
$18.00 | $5,000 | $0 | 4.5/5 | 18,480 |
| HumanaChoice H5525-084 (PPO) Humana · PPO |
$70.00 | $6,750 | $615 | 3.5/5 | 8,642 |
| AARP Medicare Advantage from UHC CA-8 (HMO-POS) UnitedHealthcare · HMO-POS |
$74.00 | $5,900 | $440 | 4.0/5 | 3,413 |
| Kaiser Permanente Sr Adv Enhanced Contra Costa (HMO) Kaiser Permanente · HMO |
$89.00 | $3,400 | $0 | 4.5/5 | 35,172 |
Get told when this changes
Plans arriving in or leaving Contra Costa County, and premiums moving, when CMS republishes.
Double opt-in, one click to unsubscribe. We never sell or share the list, and we are not an insurance agent: this is a notification about published data, not a sales call. Privacy.
Nearby and related
All California counties · What changed recently
Premiums, deductibles, maximum out-of-pocket amounts, star ratings and sanctions are reproduced from the Centers for Medicare & Medicaid Services landscape file as published in the September 2026 release. Enrolment counts are from the CMS monthly enrolment file; CMS suppresses any count of ten or fewer, which is why many plans show “fewer than 11” rather than a number. Nothing on this page is calculated by us. This is not a complete list of your options and it is not advice: see Medicare.gov or call 1-800-MEDICARE.