2026 Medicare Advantage plans in Idaho
Medicare Advantage availability is set county by county, unlike stand-alone Part D. 44 Idaho counties have at least one 2026 plan, 535 county-level offerings in all — from 2 in Butte County to 25 in Ada County. Counties with no plan at all are not listed.
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- Ada25
- Adams12
- Bannock12
- Bear Lake8
- Benewah8
- Bingham12
- Blaine11
- Boise22
- Bonner11
- Bonneville13
- Boundary9
- Butte2
- Camas9
- Canyon25
- Caribou8
- Cassia12
- Clark10
- Clearwater8
- Custer6
- Elmore16
- Franklin8
- Fremont11
- Gem23
- Gooding13
- Idaho9
- Jefferson12
- Jerome12
- Kootenai11
- Latah9
- Lemhi3
- Lewis6
- Lincoln12
- Madison11
- Minidoka11
- Nez Perce9
- Oneida8
- Owyhee23
- Payette23
- Power11
- Shoshone10
- Teton7
- Twin Falls16
- Valley17
- Washington21