Medicare plans
Medicare plans in Idaho
44 Medicare Advantage plans are offered somewhere in Idaho for 2027 (48 in 2026), 15 at a $0 premium. 44 of 44 counties have at least one, and 8 drug-only plans cover the state.
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Idaho at a glance
| Plans offered in the state | 2026 | 2027 |
|---|---|---|
| Advantage | 48 | 44 |
| Advantage at a $0 premium | 22 | 15 |
| Drug only | 10 | 8 |
Source: CMS Medicare Advantage and Part D landscape files, as of September 30, 2026. Publisher page
Source: CMS CY2026 Medicare Advantage and Part D landscape file, as of September 25, 2025. Publisher page
Counties in Idaho
- Ada County27 Advantage plans, 13 at $0
- Adams County9 Advantage plans, 3 at $0
- Bannock County13 Advantage plans, 4 at $0
- Bear Lake County9 Advantage plans, 3 at $0
- Benewah County5 Advantage plans, 1 at $0
- Bingham County12 Advantage plans, 4 at $0
- Blaine County7 Advantage plans, 1 at $0
- Boise County21 Advantage plans, 11 at $0
- Bonner County14 Advantage plans, 4 at $0
- Bonneville County18 Advantage plans, 7 at $0
- Boundary County9 Advantage plans, 3 at $0
- Butte County4 Advantage plans, 1 at $0
- Camas County12 Advantage plans, 6 at $0
- Canyon County27 Advantage plans, 13 at $0
- Caribou County9 Advantage plans, 3 at $0
- Cassia County9 Advantage plans, 2 at $0
- Clark County13 Advantage plans, 6 at $0
- Clearwater County9 Advantage plans, 3 at $0
- Custer County9 Advantage plans, 4 at $0
- Elmore County16 Advantage plans, 7 at $0
- Franklin County9 Advantage plans, 3 at $0
- Fremont County16 Advantage plans, 7 at $0
- Gem County22 Advantage plans, 11 at $0
- Gooding County14 Advantage plans, 6 at $0
- Idaho County5 Advantage plans, 1 at $0
- Jefferson County17 Advantage plans, 7 at $0
- Jerome County11 Advantage plans, 3 at $0
- Kootenai County15 Advantage plans, 4 at $0
- Latah County7 Advantage plans, 1 at $0
- Lemhi County3 Advantage plans, 1 at $0
- Lewis County5 Advantage plans, 1 at $0
- Lincoln County10 Advantage plans, 4 at $0
- Madison County13 Advantage plans, 5 at $0
- Minidoka County8 Advantage plans, 2 at $0
- Nez Perce County7 Advantage plans, 1 at $0
- Oneida County13 Advantage plans, 6 at $0
- Owyhee County21 Advantage plans, 11 at $0
- Payette County24 Advantage plans, 12 at $0
- Power County16 Advantage plans, 7 at $0
- Shoshone County12 Advantage plans, 4 at $0
- Teton County8 Advantage plans, 3 at $0
- Twin Falls County16 Advantage plans, 6 at $0
- Valley County16 Advantage plans, 7 at $0
- Washington County21 Advantage plans, 11 at $0
Source: CMS Medicare Advantage and Part D landscape files, as of September 30, 2026. Publisher page
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About this data
Plans, premiums, out-of-pocket maximums, and drug deductibles come from the CMS CY2027 Medicare Advantage and Part D landscape file. Change from 2026 compares it with the CY2026 landscape. Stars are the 2027 Star Ratings CMS released October 8, 2026: the overall rating for Advantage plans and the Part D summary rating for drug-only plans, which have no overall rating.
Advantage counts include Special Needs Plans, which are open only to people who qualify. Drug-only plans are listed by CMS for a whole state, so every county page shows them. Employer group plans are not in the file. This page lists plans; it does not say which plan fits anyone, and Rivvi does not sell plans.
Source: CMS Medicare Advantage and Part D landscape files, as of September 30, 2026. Publisher page
Source: CMS CY2026 Medicare Advantage and Part D landscape file, as of September 25, 2025. Publisher page
Source: CMS 2027 Medicare Part C and D Star Ratings, as of October 8, 2026. Publisher page