Medicare plans ending or leaving counties in Montana for 2027
CMS files show 13 plans ending and 5 plans leaving some counties in Montana for 2027. Find your 2026 plan below by name or plan ID (the ID is on your member card, for example H1234-001).
13plans ending
5plans leaving counties
40counties affected
2026 plans ending in Montana
These 2026 plans are not offered in 2027, and CMS lists no plan that their members move into.
| 2026 plan | Plan ID | Organization | Plan type | 2026 counties in Montana |
|---|---|---|---|---|
| SilverScript Choice (PDP) | S5601-050 | CVS Health Corporation | PDP | Statewide (all counties) |
| Blue Cross Medicare Advantage Choice Plus (PPO) | H0107-005 | Health Care Service Corporation | PPO | Cascade, Chouteau, Custer, Fergus, Flathead, Glacier, Golden Valley, Hill, Judith Basin, Lake, Liberty, Meagher, Mineral, Musselshell, Pondera, Rosebud, Sanders, Sweet Grass, Toole, Wheatland, Yellowstone |
| Blue Cross Medicare Advantage Classic (PPO) | H0107-003 | Health Care Service Corporation | PPO | Beaverhead, Big Horn, Broadwater, Carbon, Cascade, Chouteau, Custer, Deer Lodge, Fergus, Flathead, Gallatin, Glacier, Golden Valley, Granite, Hill, Jefferson, Judith Basin, Lake, Lewis and Clark, Liberty, Lincoln, Madison, Meagher, Mineral, Missoula, Musselshell, Park, Pondera, Powell, Ravalli, Rosebud, Sanders, Silver Bow, Stillwater, Sweet Grass, Teton, Toole, Wheatland, Yellowstone |
| Blue Cross Medicare Advantage Dental Premier (PPO) | H0107-007 | Health Care Service Corporation | PPO | Cascade, Chouteau, Custer, Fergus, Flathead, Glacier, Golden Valley, Hill, Judith Basin, Lake, Liberty, Meagher, Mineral, Musselshell, Pondera, Rosebud, Sanders, Sweet Grass, Toole, Wheatland, Yellowstone |
| Blue Cross Medicare Advantage Health Choice (PPO) | H0107-010 | Health Care Service Corporation | PPO | Cascade, Chouteau, Custer, Fergus, Flathead, Glacier, Golden Valley, Hill, Judith Basin, Lake, Liberty, Meagher, Mineral, Musselshell, Pondera, Rosebud, Sanders, Sweet Grass, Toole, Wheatland, Yellowstone |
| Blue Cross Medicare Advantage Optimum (PPO) | H0107-004 | Health Care Service Corporation | PPO | Beaverhead, Big Horn, Broadwater, Carbon, Cascade, Chouteau, Custer, Deer Lodge, Fergus, Flathead, Gallatin, Glacier, Golden Valley, Granite, Hill, Jefferson, Judith Basin, Lake, Lewis and Clark, Liberty, Lincoln, Madison, Meagher, Mineral, Missoula, Musselshell, Park, Pondera, Powell, Ravalli, Rosebud, Sanders, Silver Bow, Stillwater, Sweet Grass, Teton, Toole, Wheatland, Yellowstone |
| Blue Cross Medicare Advantage Protect (PPO) | H0107-011 | Health Care Service Corporation | PPO | Cascade, Chouteau, Custer, Fergus, Flathead, Glacier, Golden Valley, Hill, Judith Basin, Lake, Liberty, Meagher, Mineral, Musselshell, Pondera, Rosebud, Sanders, Sweet Grass, Toole, Wheatland, Yellowstone |
| PacificSource Medicare MyCare Choice 30 (HMO-POS) | H3864-030 | PacificSource | HMO-POS | Yellowstone |
| PacificSource Medicare MyCare Choice Rx 29 (HMO-POS) | H3864-029 | PacificSource | HMO-POS | Yellowstone |
| AARP Medicare Advantage Access from UHC MT-3 (PPO) | H8211-012 | UnitedHealth Group, Inc. | PPO | Big Horn, Flathead, Glacier, Golden Valley, McCone, Ravalli, Teton, Yellowstone |
| AARP Medicare Advantage Patriot No Rx MT-MA01 (PPO) | H8211-010 | UnitedHealth Group, Inc. | PPO | Big Horn, Flathead, Glacier, Golden Valley, McCone, Ravalli, Teton, Yellowstone |
| AARP Medicare Advantage from UHC MT-0001 (PPO) | H8211-007 | UnitedHealth Group, Inc. | PPO | Big Horn, Flathead, Glacier, Golden Valley, McCone, Ravalli, Teton, Yellowstone |
| AARP Medicare Advantage from UHC MT-0002 (PPO) | H8211-009 | UnitedHealth Group, Inc. | PPO | Big Horn, Flathead, Glacier, Golden Valley, McCone, Ravalli, Teton, Yellowstone |
2026 plans leaving some counties in Montana
In the counties listed, these plans end for 2027 and no 2027 plan that CMS links to them serves the county. In their other counties, members continue in or move to the 2027 plan shown.
| 2026 plan | Plan ID | Organization | Plan type | Counties where it ends in Montana | 2027 plan for other counties |
|---|---|---|---|---|---|
| Humana Gold Plus H6622-007 (HMO) | H6622-007 | Humana Inc. | HMO | Lake | Humana Gold Plus H6622-007 (HMO) (H6622-007) |
| Humana Gold Plus SNP-DE H6622-008 (HMO D-SNP) | H6622-008 | Humana Inc. | HMO D-SNP; Dual Special Needs Plan (D-SNP) | Park | Humana Gold Plus SNP-DE H6622-008 (HMO D-SNP) (H6622-008) |
| Humana USAA Honor Giveback (PPO) | H5525-031 | Humana Inc. | PPO | Lake | Humana USAA Honor Giveback (PPO) (H5525-031) |
| HumanaChoice H5216-457 (PPO) | H5216-457 | Humana Inc. | PPO | Chouteau, Stillwater | HumanaChoice H5216-457 (PPO) (H5216-457) |
| HumanaChoice H5525-054 (PPO) | H5525-054 | Humana Inc. | PPO | Lake | HumanaChoice H5525-054 (PPO) (H5525-054) |
If your Medicare Advantage plan is ending or leaving your county
- Your plan must mail you a notice. Check that notice for your plan’s exact status.
- You can choose a new plan during Medicare’s Annual Enrollment Period, October 15 to December 7.
- Because your plan is ending or leaving your county, you also get a Special Enrollment Period, from December 8 through the last day of February.
- If you do not choose a plan, you return to Original Medicare on January 1. If you get Extra Help paying for prescriptions, Medicare places you in a Part D drug plan, and you can still choose a different plan. If you do not get Extra Help, you need to join a Part D drug plan yourself to keep drug coverage.
- You may also have a guaranteed right to buy certain Medicare Supplement (Medigap) policies.
If your Part D drug plan (PDP) is ending
- Your plan must mail you a notice. Check that notice for your plan’s exact status.
- You can choose a new drug plan during Medicare’s Annual Enrollment Period, October 15 to December 7, and you also get a Special Enrollment Period from December 8 through the last day of February.
- Your Original Medicare coverage for doctors and hospitals does not change. Only your drug plan is ending.
- If you get Extra Help paying for prescriptions, Medicare places you in another drug plan. If you do not get Extra Help and do not join another drug plan, your drug coverage ends when the plan ends. Going without drug coverage can lead to a late enrollment penalty later.
For all of your options, contact Medicare.gov or 1-800-MEDICARE.
Sources: CMS CY2027 Part C and D Plan Crosswalk, file dated October 1, 2026 (which plans end or leave counties); CMS CY2026 Landscape Source File, September 2026 release (2026 service areas); CMS CY2027 Landscape Source File, November 2026 release (2027 service areas). Plans can still change. Enrollment rules: CMS CY2027 Medicare Advantage and Part D Enrollment and Disenrollment Guidance, section 30.6.10; CMS Low Income Subsidy reassignment rules. The notice your plan mails you (Annual Notice of Change or non-renewal letter) is the official notice for your plan.
Talk with a licensed agent about the plans in your area: call 1-866-340-3441.