Medicare is federal health insurance primarily for people 65 and older, though some younger people with disabilities or certain conditions also qualify. It is one of the most important — and most confusing — programs in American healthcare.
Understanding Medicare before you need it can save you thousands of dollars and prevent gaps in coverage. This guide breaks down the parts of Medicare in plain language and helps you avoid common, costly mistakes.
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Scout explains: Medicare Basics
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The Parts of Medicare Explained
Medicare is divided into parts that cover different types of care:
• Part A (Hospital Insurance): Covers inpatient hospital stays, skilled nursing facility care, hospice, and some home health care. Most people pay no premium for Part A if they or their spouse paid Medicare taxes for at least 10 years.
• Part B (Medical Insurance): Covers outpatient care, doctor visits, preventive services, and medical equipment. Part B has a monthly premium (about $174.70/month in 2024) and an annual deductible.
• Part C (Medicare Advantage): Private insurance plans that bundle Parts A and B (and usually D) with additional benefits like dental and vision.
• Part D (Prescription Drug Coverage): Adds prescription drug coverage, either as a standalone plan or included in Medicare Advantage.
When to Enroll: The Windows That Matter
Medicare enrollment timing is critical — missing windows can result in lifetime late enrollment penalties.
• Initial Enrollment Period (IEP): A 7-month window around your 65th birthday (3 months before, the month of, and 3 months after).
• Special Enrollment Period (SEP): If you are still working at 65 with employer coverage, you can delay Medicare without penalty. You get an SEP for 8 months after employer coverage ends.
• General Enrollment Period: January 1 – March 31 each year. Coverage begins July 1. Late penalties apply.
• Open Enrollment (Part C and D): October 15 – December 7 each year.
Contact your State Health Insurance Assistance Program (SHIP) for free guidance.
Medigap: Supplemental Insurance
Original Medicare (Parts A and B) covers about 80% of approved medical costs. Medigap (Medicare Supplement Insurance) is private insurance that covers many of the remaining gaps.
The best time to buy Medigap is during your 6-month Medigap Open Enrollment Period that starts when you turn 65 and enroll in Part B. During this window, insurers cannot deny coverage or charge more based on health conditions. After this window, you may be subject to medical underwriting.
Medicare Advantage vs. Original Medicare
Medicare Advantage plans often include dental, vision, and hearing benefits not covered by Original Medicare. They typically have lower premiums but may have smaller provider networks.
Original Medicare + Medigap generally offers more flexibility (any doctor or hospital that accepts Medicare) and more predictable costs, but higher premiums.
Key questions for any Medicare Advantage plan: Are my doctors in-network? Is my preferred hospital covered? What are the copays for services I use regularly? What is the maximum out-of-pocket limit?
Medicare Savings Programs and Extra Help
If you have limited income and resources, you may qualify for programs that reduce Medicare costs significantly:
• Medicare Savings Programs: Help pay Part A and/or B premiums, deductibles, and copays. • Extra Help (Low Income Subsidy): Helps pay Part D prescription drug costs. Can save thousands annually.
Eligibility for these programs is broader than many people expect. Apply at your local Social Security office, state Medicaid office, or Benefits.gov. Many people who qualify do not know these programs exist.
Getting Free Help Navigating Medicare
Every state has a State Health Insurance Assistance Program (SHIP) that offers free, unbiased Medicare counseling. SHIP counselors are trained volunteers who can help you compare plans, understand enrollment rules, and apply for assistance programs.
To find your local SHIP, call 1-800-MEDICARE or visit shiphelp.org. This service is completely free and is not affiliated with any insurance company.
This guide is for educational purposes only and does not constitute medical, legal, or financial advice. Always consult qualified professionals for decisions affecting your health and finances.