Medicare in Indiana — plans and how to compare.
What Indiana residents should know about Medicare Advantage, Medicare Supplement, and Part D — and how plan availability differs in Indiana.
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Medicare basics in Indiana
Medicare is a federal program, so the core rules are the same in Indiana as everywhere else — but the specific plans available, premiums, and carrier networks vary by ZIP code and county.
Most Indiana residents become eligible at 65 through Social Security. See eligibility for full rules.
For the 7-month enrollment window timeline, see Turning 65.
What Indiana residents typically compare
- Medicare Advantage — Many Indiana counties have 20-50+ Advantage plans. Plans, premiums, and extras vary by county.
- Medicare Supplement (Medigap) — Plans are federally standardized but premium pricing and underwriting rules vary by state.
- Part D prescription drug plans — Available statewide but formularies and preferred pharmacies differ by plan.
See Advantage vs. Supplement for the side-by-side framework.
Indiana timing rules
The federal Medigap Open Enrollment window is the same everywhere — 6 months starting the month you turn 65 AND have Part B. During that window, no medical underwriting.
Outside that window, most states (including Indiana unless otherwise noted) allow Medigap carriers to use medical underwriting. Check Indiana's State Health Insurance Assistance Program (SHIP) for current state-specific rules.
How to compare plans in Indiana
- Confirm your ZIP — plans differ within Indiana by county
- List your prescriptions and check each on the plan's formulary
- Confirm your doctors are in-network
- Compare premium + deductible + maximum out-of-pocket
- Check star ratings for plans you are weighing
- Ask about prior authorization requirements (common on Advantage)