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Medicare in Idaho

Roughly 407,000 Idaho residents were enrolled in Medicare in 2025 — about 20% of the state’s population. Around half of them (roughly 46–50%) are in Medicare Advantage plans.

Medicare Open Enrollment runs from October 15 to December 7 each year. The Idaho Department of Insurance encourages people to review coverage, confirm that doctors and prescriptions are still covered, and talk with SHIBA or a local agent rather than assuming last year’s plan is still the best fit.

Idaho also has a Medigap “birthday rule.” Many people can switch to a Medigap policy with comparable or lesser benefits around their birthday without medical underwriting.

Figures based on 2025 CMS data and Idaho Department of Insurance guidance. Confirm current details with Medicare or a licensed agent.