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Explore Medicare fundamentals

Everything you need to know to choose coverage with confidence.

Page last updated on: 7/13/26

Get a clear, easy-to-understand overview of how Medicare works and what each part covers. Use these pages to learn about Medicare Parts A, B, C and D, Medicare Supplement (Medigap) plans, different coverage options and common healthcare terms so you can better understand your choices and feel more confident when making Medicare decisions.

grandmother, mother and daughters blowing bubbles in living room

Explore the key features of Medicare Parts A, B, C and D, plus Medigap plans, as a starting point for understanding your coverage options.

Grandmother laughing on couch with grandkids

Medicare Part A offers hospital insurance coverage. Learn more about Medicare Part A to enroll on time & start receiving benefits as soon as you're eligible.

smiling grandfather, father and son outside in an apple orchard

Learn what Medicare Part B covers, including doctor visits, preventive services and outpatient care. Understand costs, eligibility and enrollment.​

mature couple walking outdoors holding hands and smiling

Medicare Part C (Medicare Advantage) combines hospital and medical coverage with extra benefits like dental and vision. Learn what it covers and how it works.

a group of friends walking outside in the sunshine.

Medicare Part D helps cover prescription drugs not included in Parts A or B. Learn how it works, what it costs and how to avoid penalties.

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Learn how Medicare Supplement, or Medigap, plans work with Original Medicare to help cover copays, coinsurance and deductibles in Michigan.

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Learn key health coverage terms like deductibles, copays, coinsurance and more to understand your Medicare plan and costs.

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