Medicare Advantage · ATRIO · enrollment Oct 2026
ATRIO: 34K Medicare Advantage members in 1 states, leading 0.
ATRIO Health Plans, shown as ATRIO, holds 0.1% of the country’s visible Medicare Advantage members, 68th among 165 carriers. Its largest state is Oregon with 33,530 members and 7.2% share. Over twelve months it grew in 0 states and shrank in 1.
Visible members
34K
Oct 2026
National share
0.1%
68th of 165
States
1
16 plans with members
States led
0
first by visible members
Growing in
0
states, twelve months
Shrinking in
1
states, twelve months
ATRIO 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 ATRIO’s position there.
| State | Members | Share | Rank | Twelve months | Counties led | Rating |
|---|---|---|---|---|---|---|
| Oregon | 33,530 | 7.2% | 7 of 15 | −13.4% | 2 | 2.50 |
Carrier Command · for Medicare Advantage plans
The read on ATRIO in every state is in Carrier Command.
Each state's position page on ATRIO: 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
- Kaiser1.49M
- 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
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. ATRIO is the parent organization ATRIO Health Plans; 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.