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Medicare Supplement Insurance Plans

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Medicare Supplement Insurance Plans, also known as Medigap plans, are secondary insurance plans offered by private insurers.  As the secondary insurer, these plans pay after Original Medicare pays its portion of your medical services, covering some or all of your deductibles and coinsurance. Click here for a comparison of benefits covered by the ten standardized Medigap plans available in Michigan.

How do Part D costs work?

Submitted by igdmaster on

Your costs for a Part D prescription drug plan may include monthly premiums, copays, and a deductible.  The monthly premium can be paid through your Social Security retirement benefit or directly to the carrier.  Depending on your income, you may be subject to an Income Related Monthly Adjust Amount (IRMAA).  As of 2025, for drugs included in the plan's formulary, out of pocket costs including deductibles and copays are capped at $2000.

What is IRMAA?

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Your Part B premium is based on your modified adjusted gross income from two years ago.  If it is above a certain threshold, then an Income Related Monthly Adjustment Amount (IRMAA) may be applied to your Part B and Part D premiums.  Every year this IRMAA will be recalculated based on the MAGI on your tax return reported two years previously. 

What is the Part D Late Enrollment Penalty?

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If you delay enrollment in Part D after you have become eligible for Medicare and do not have creditable prescription drug coverage from another source, you may incur a late enrollment penalty.  Creditable prescription drug coverage is coverage as good as or better than Medicare drug coverage.  Examples would include drug coverage from most group plans, VA and TRICARE.  If you receive state aid for your prescriptions costs through the Extra Help program, you are exempt from the late enrollment penalty.  The penalty is triggered when you enroll in Part D and will be appli

What is the Part B Late Enrollment Penalty?

Submitted by igdmaster on

If you delay enrollment in Part B after you have become eligible for Medicare and are not covered by other insurance such as a group plan, you may incur a late enrollment penalty.  The penalty is triggered when you enroll in Part B and is based on the amount of time that has passed since your Initial Enrollment Period expired at the end of the third month following your 65th birthday month.  The penalty will be applied as long as you have Part B. 

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