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Free tool · plan year 2027

Idaho — plan year 2027

Every county in this state, with the plans that were available for 2026 and do not appear in the federal 2027 landscape file.

Counties, sorted by share of enrollment in plans not in the 2027 file

CountyNot in the 2027 fileAvailable for 2026Share of enrollmentFlag
Teton31092.7%High share of enrollment in plans not in the 2027 file
Blaine71491.3%High share of enrollment in plans not in the 2027 file
Lemhi3490.7%High share of enrollment in plans not in the 2027 file
Valley92482.2%High share of enrollment in plans not in the 2027 file
Adams61681.3%High share of enrollment in plans not in the 2027 file
Jerome91875.6%High share of enrollment in plans not in the 2027 file
Latah41073.2%High share of enrollment in plans not in the 2027 file
Idaho41072.7%High share of enrollment in plans not in the 2027 file
Camas31366.7%High share of enrollment in plans not in the 2027 file
Franklin31166.7%High share of enrollment in plans not in the 2027 file
Caribou31163.6%High share of enrollment in plans not in the 2027 file
Nez Perce41061.3%High share of enrollment in plans not in the 2027 file
Lewis3760.7%High share of enrollment in plans not in the 2027 file
Benewah3958.2%High share of enrollment in plans not in the 2027 file
Elmore92355.9%High share of enrollment in plans not in the 2027 file
Gooding61953.6%High share of enrollment in plans not in the 2027 file
Bear Lake31152.8%High share of enrollment in plans not in the 2027 file
Bonner41650.0%High share of enrollment in plans not in the 2027 file
Minidoka71648.9%High share of enrollment in plans not in the 2027 file
Lincoln61645.3%High share of enrollment in plans not in the 2027 file
Twin Falls92244.2%High share of enrollment in plans not in the 2027 file
Cassia71742.1%High share of enrollment in plans not in the 2027 file
Bingham41741.5%High share of enrollment in plans not in the 2027 file
Bannock41738.6%High share of enrollment in plans not in the 2027 file
Washington52736.0%High share of enrollment in plans not in the 2027 file
Owyhee73035.4%High share of enrollment in plans not in the 2027 file
Boise72934.4%High share of enrollment in plans not in the 2027 file
Kootenai41633.1%High share of enrollment in plans not in the 2027 file
Gem73032.6%High share of enrollment in plans not in the 2027 file
Canyon73229.9%High share of enrollment in plans not in the 2027 file
Payette73029.7%High share of enrollment in plans not in the 2027 file
Ada73224.4%High share of enrollment in plans not in the 2027 file
Boundary11014.6%High share of enrollment in plans not in the 2027 file
Jefferson1177.2%—
Madison1147.1%—
Shoshone1135.2%—
Bonneville1184.8%—
Butte020.0%—
Clark0130.0%—
Clearwater090.0%—
Custer070.0%—
Fremont0160.0%—
Oneida0110.0%—
Power0160.0%—

Source: CMS, CY2027 Medicare Advantage and Part D Landscape Source File (PY2027, retrieved October 3, 2026) and Monthly Enrollment by CPSC, September 2026.

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Where these numbers come from

Plan year
2027
Source file
CMS Medicare Advantage and Part D Landscape Source File, and Monthly Enrollment by CPSC
File vintage
PY2027
Retrieved
October 3, 2026
Enrollment as of
September 2026

Source: CMS, CY2027 Medicare Advantage and Part D Landscape Source File (PY2027, retrieved October 3, 2026) and Monthly Enrollment by CPSC, September 2026.

What this does not tell you

  1. 01

    Why a plan is missing from the 2027 file. A second federal file explains that, and it posts after the landscape file.

  2. 02

    Whether a plan's members will be moved to another plan automatically. That is in the same second file.

  3. 03

    What any plan will cost for 2027, what its network will be, or which plan any individual should choose. This is not plan-shopping advice.

  4. 04

    Exact enrollment. Cells below the federal publication floor of 11 are not published, so every count here is a floor and undercounts small rural counties most.

Beyond one county

Plan availability is one number a payer changes without telling you.

In Network watches payer medical policy, coding rules and contracted rates for hospitals and practices, and tells you the day something moves.

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Before you use this page

In Network is not affiliated with, endorsed by, or acting on behalf of the Centers for Medicare & Medicaid Services, the U.S. Department of Health and Human Services, or any government agency.

This page is a summary of public CMS files. It is not advice about which plan anyone should choose, and it is not a plan comparison.

Plan availability can change. Verify any plan's status at medicare.gov or by calling 1-800-MEDICARE (1-800-633-4227), TTY 1-877-486-2048.

If you are looking at this because of your own coverage, medicare.gov and the number above are the right places to get an answer about it.

Source: Centers for Medicare & Medicaid Services, CY2027 Medicare Advantage and Part D Landscape Source File and Monthly Enrollment by CPSC, retrieved October 3, 2026.

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