Medicare Advantage plans changing or leaving Montana counties for 2027
Across 50 Montana counties, 202 Medicare Advantage plans are leaving for 2027 and 150 are changing. Pick your county for its numbers.
Compare Medicare Advantage options near you
Answer 3 quick questions to see Medicare Advantage listings from licensed insurance partners.
What’s your ZIP code?
Plan availability is set by your county, so we start here.
How old are you?
This helps match you with options you’re eligible for.
Do you have Medicare Parts A & B?
This affects which Medicare Advantage options you can choose.
These listings are provided by licensed insurance partners.
Medicare Advantage plans in your area are changing or leaving for 2027.
One call tells you whether your plan is on the list — before enrollment opens.
Available now — current wait: 0 min
A real person answers. No phone menu, ever.
Medicare Advantage plans in your area are changing or leaving for 2027.
Is your plan on the list? One call tells you — before enrollment opens.
Available now — current wait: 0 min
A real person answers. About 5 minutes, no obligation.
Agents available Mon–Fri, 8am–6pm CT
Advertising disclosure: MyMedicarePlans.org may be compensated when you contact a partner or licensed agent. Listings are not ranked or endorsed by us, and we do not recommend specific plans. You can also contact Medicare.gov, 1-800-MEDICARE, or your local SHIP.
Speak to a Licensed Insurance Agent
Click to call 855-729-3240Found a plan you like online?
One free call confirms it's actually right for you — online directories are wrong more often than you'd think.
- Your doctors — confirmed in-network for 2027
- Your prescriptions — checked against the plan's 2027 drug tiers
855-729-3240 · free · about 5 minutes
Montana counties, most changes first
| County | Leaving | Changing | Total |
|---|---|---|---|
| Yellowstone County | 12 | 6 | 18 |
| Flathead County | 10 | 7 | 17 |
| Cascade County | 6 | 7 | 13 |
| Glacier County | 10 | 3 | 13 |
| Golden Valley County | 10 | 3 | 13 |
| Lake County | 9 | 3 | 12 |
| Chouteau County | 7 | 3 | 10 |
| Judith Basin County | 6 | 4 | 10 |
| Pondera County | 6 | 4 | 10 |
| Ravalli County | 6 | 4 | 10 |
| Rosebud County | 6 | 4 | 10 |
| Teton County | 6 | 4 | 10 |
| Big Horn County | 6 | 3 | 9 |
| Fergus County | 6 | 3 | 9 |
| Liberty County | 6 | 3 | 9 |
| Meagher County | 6 | 3 | 9 |
| Mineral County | 6 | 3 | 9 |
| Musselshell County | 6 | 3 | 9 |
| Sanders County | 6 | 3 | 9 |
| Sweet Grass County | 6 | 3 | 9 |
| Toole County | 6 | 3 | 9 |
| Wheatland County | 6 | 3 | 9 |
| Gallatin County | 2 | 6 | 8 |
| Lewis and Clark County | 2 | 6 | 8 |
| Missoula County | 2 | 6 | 8 |
| Carbon County | 2 | 4 | 6 |
| Custer County | 6 | 0 | 6 |
| Hill County | 6 | 0 | 6 |
| Lincoln County | 2 | 4 | 6 |
| Park County | 3 | 3 | 6 |
| Silver Bow County | 2 | 4 | 6 |
| Beaverhead County | 2 | 3 | 5 |
| Broadwater County | 2 | 3 | 5 |
| Deer Lodge County | 2 | 3 | 5 |
| Granite County | 2 | 3 | 5 |
| Jefferson County | 2 | 3 | 5 |
| Madison County | 2 | 3 | 5 |
| Powell County | 2 | 3 | 5 |
| Stillwater County | 3 | 2 | 5 |
| Mccone County | 4 | 0 | 4 |
| Treasure County | 0 | 3 | 3 |
| Daniels County | 0 | 1 | 1 |
| Fallon County | 0 | 1 | 1 |
| Garfield County | 0 | 1 | 1 |
| Petroleum County | 0 | 1 | 1 |
| Phillips County | 0 | 1 | 1 |
| Powder River County | 0 | 1 | 1 |
| Prairie County | 0 | 1 | 1 |
| Roosevelt County | 0 | 1 | 1 |
| Valley County | 0 | 1 | 1 |
What to do before December 7
If you are in a Medicare Advantage plan today, your plan must send you an Annual Notice of Change by September 30 that spells out exactly what is different for 2027. Read it before the Annual Enrollment Period, which runs October 15 through December 7.
If your plan is leaving your county, you will get a separate notice and a Special Enrollment Period to choose new coverage. If you do nothing, you may be returned to Original Medicare without drug coverage, so it is worth acting during the window.
A licensed agent can check your doctors and prescriptions against the plans that will actually operate in your county next year. For unbiased help, contact Medicare.gov, 1-800-MEDICARE, or your State Health Insurance Assistance Program (SHIP).
Good to know
Frequently asked questions
Why do the numbers differ so much from county to county?
What does “changing” mean for 2027?
Do you list which plans are leaving?
- CMS — MA/Part D Landscape & Plan Finder data
For personalized answers, contact Medicare.gov, 1-800-MEDICARE, or your local SHIP.