Is My Plan Ending?

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Plans ending in Montana in 2027

In Montana, 202 Medicare Advantage plan listings from 2026 are not offered in 2027, and 0 more are probably being replaced by a plan with a new number. A listing is one plan in one county.

Not offeredin 2027
202
of 596plan listings
Probably beingreplaced
0
same name,new number
People in plansending here
~19,000
rounded,Sept. 2026
People who maybe moved
0
same contract hasother plans here

Ending here: the plan isn't offered in the county in 2027, and the company can't move members into another plan under the same contract there. Members need to pick a new plan unless their letter says they will be moved. If they do nothing, they will have Original Medicare. May be moved: the plan ended everywhere, but the same contract still has other plans in the county. Some companies move members into one of those plans. Many don't. The letter from the plan will say. Everyone in these plans keeps Medicare.

Counties with the most people in plans not offered

  1. Yellowstone County: about 3,900 people (~3,900 in plans ending here, 0 who may be moved)
  2. Flathead County: about 2,600 people (~2,600 in plans ending here, 0 who may be moved)
  3. Gallatin County: about 2,000 people (~2,000 in plans ending here, 0 who may be moved)
  4. Ravalli County: about 1,600 people (~1,600 in plans ending here, 0 who may be moved)
  5. Missoula County: about 1,500 people (~1,500 in plans ending here, 0 who may be moved)

By company

CompanyNot offeredProbably replacedPeople in plans ending herePeople who may be moved
Health Care Service Corporation1620~13,0000
Humana60~1,0000
PacificSource20~1,1000
UnitedHealth Group320~3,7000

By county

CountyPlans in 2026Not offeredProbably replacedPeople in plans ending herePeople who may be moved
Beaverhead County920~1600
Big Horn County1560~1100
Broadwater County1120~400
Carbon County1120~600
Cascade County2160~1,2000
Chouteau County1770~2200
Custer County660~3400
Daniels County20000
Deer Lodge County1220~600
Fallon County20000
Fergus County1560~3100
Flathead County25100~2,6000
Gallatin County1520~2,0000
Garfield County20000
Glacier County19100~1000
Golden Valley County19100~300
Granite County1120~300
Hill County660~2100
Jefferson County1220~600
Judith Basin County1660~400
Lake County1690~1,1000
Lewis and Clark County1620~6700
Liberty County156060 or fewer0
Lincoln County1320~6000
Madison County1120~1400
McCone County440~200
Meagher County156060 or fewer0
Mineral County1560~1100
Missoula County1620~1,5000
Musselshell County1460~400
Park County1130~1500
Petroleum County20000
Phillips County20000
Pondera County1760~400
Powder River County20000
Powell County1220~1000
Prairie County20000
Ravalli County1660~1,6000
Roosevelt County20000
Rosebud County1560~200
Sanders County1660~2100
Silver Bow County1320~1500
Stillwater County1130~4700
Sweet Grass County1360~1000
Teton County1860~1800
Toole County1460~100
Treasure County80000
Valley County20000
Wheatland County1360~300
Yellowstone County26120~3,9000

Drug plans (Part D) in Montana

Stand-alone drug plans are offered across the whole state. 3 are not offered in Montana in 2027.

PlanCompanyWhat's happeningPeople in plan (Sept 2026)
SilverScript Choice (PDP) · S5601-050-0Aetna MedicareNot offered: left this county~17,000
HealthSpring Assurance Rx (PDP) · S5617-123-0HealthSpringNot offered: company ending this contract~1,100
HealthSpring Extra Rx (PDP) · S5617-375-0HealthSpringNot offered: company ending this contract~1,700

These numbers come from CMS's plan files. If you're in one of these plans, confirm with your Annual Notice of Change or the letter from your plan.

Source: CMS CY2027 Landscape, data as of September 22, 2026 (release 202609.1). Enrollment: CMS Monthly Enrollment by Contract/Plan/State/County, September 2026. "Probably being replaced" is our own match by company and plan name; see how we get our numbers.