Kaiser: 1.49M Medicare Advantage members in 11 states, leading 2.
Kaiser Foundation Health Plan, Inc., shown as Kaiser, holds 5.0% of the country’s visible Medicare Advantage members, 5th among 165 carriers. Its largest state is California with 1,080,968 members and 36.5% share. It leads California, Maryland. Over twelve months it grew in 9 states and shrank in 2.
Kaiser in every state it sells in
Largest state first. Rank is among the carriers with visible members in the state; counties led counts counties where the carrier has the most visible members and another carrier is visible. A state with a link has a page on Kaiser’s position there.
| State | Members | Share | Rank | Twelve months | Counties led | Rating |
|---|---|---|---|---|---|---|
| California | 1,080,968 | 36.5% | 1 of 37 | +4.8% | 24 | 4.50 |
| Washington | 92,168 | 13.8% | 3 of 14 | −0.6% | 1 | 4.50 |
| Colorado | 88,214 | 18.9% | 3 of 11 | +2.4% | 1 | 4.00 |
| Oregon | 60,840 | 13.0% | 2 of 15 | +5.6% | 1 | 4.50 |
| Maryland | 59,803 | 28.2% | 1 of 10 | +5.4% | 4 | 4.50 |
| Georgia | 34,382 | 3.8% | 5 of 13 | +5.6% | 0 | 4.50 |
| Virginia | 24,918 | 4.2% | 5 of 10 | +7.0% | 2 | 4.50 |
| Nevada | 21,363 | 7.0% | 6 of 14 | +47373.3% | 1 | 5.00 |
| Hawaii | 21,089 | 15.4% | 3 of 7 | +2.9% | 1 | 4.50 |
| District of Columbia | 4,390 | 15.0% | 2 of 6 | −1.0% | 0 | 4.50 |
| Arizona | 64 | 0.0% | 17 of 18 | +30.6% | 0 | 4.50 |
The read on Kaiser in every state is in Carrier Command.
Each state's position page on Kaiser: risk and rebate against the market, Stars levers, the election-period forecast, exits and the county standing, rebuilt every month.
Other carriers
The largest Medicare Advantage parents nationally, by visible members.
- UnitedHealth7.64M
- Humana6.40M
- Aetna (CVS)2.80M
- Elevance1.50M
- Centene883K
- Health Care Service Corporation779K
- Devoted530K
- SCAN Group460K
- Healthfirst, Inc.374K
- MHH Healthcare, L.P.346K
- Highmark Health318K
- Alignment Healthcare USA, LLC299K
- Lifetime Healthcare, Inc.296K
- Aware Integrated, Inc.288K
- Corewell Health257K
- UPMC Health System220K
- Molina219K
- BlueCross BlueShield of Tennessee216K
- Blue Cross Blue Shield of Michigan Mutual Ins. Co.211K
- Guidewell Mutual Holding Corporation203K
- CuraCor Solutions Corp.182K
- Clover Health Holdings, Inc.157K
- Independence Health Group, Inc.143K
- Point32Health, Inc.139K
How these numbers are made
- Members are visible members: CMS suppresses any plan-county cell of ten or fewer, so small counties undercount. Market share excludes employer group plans.
- Enrollment is Oct 2026. Kaiser is the parent organization Kaiser Foundation Health Plan, Inc.; its plans may sell under other brand names in each state.
- A state's twelve-month change, counties led and rating come from that state's page and carry its vintages.
- Every figure comes from public CMS data as Livmor reads it, and the page is rebuilt when a new month posts. Livmor Carrier Command, public CMS data.