Medicare Basics: What You Need to Know Before You Enroll

Medicare can feel like alphabet soup. Understanding the four parts — and the two enrollment windows that carry penalties if you miss them — is enough to make a confident first decision. Here is the plain-language version.

The four parts of Medicare

Part A — Hospital insurance

Covers inpatient hospital stays, skilled nursing, and some home health care. Most people pay no premium for Part A because they paid into it through payroll taxes.

Part B — Medical insurance

Covers doctor visits, outpatient care, and preventive services. Part B has a monthly premium set each year.

Part C — Medicare Advantage

A private alternative that bundles Parts A and B, often with drug coverage and extras like dental or vision. Networks and rules vary by plan.

Part D — Prescription drug coverage

Helps pay for medications. Even if you take no drugs today, enrolling on time avoids a lasting late-enrollment penalty.

The enrollment windows that matter

• Initial Enrollment Period: the seven months around your 65th birthday.
• Annual Election Period: October 15 to December 7 each year, when you can change plans.

Missing your Initial Enrollment Period can mean a premium penalty that lasts for life. When in doubt, ask before the window closes.

You do not have to decide alone. A licensed advisor can compare the plans available where you live and help you avoid the common penalties.