The one-paragraph version
Medicare is earned insurance. You (or your spouse) paid into it through payroll taxes during your working years, and at 65, or after 24 months of Social Security disability benefits, it becomes your primary health coverage. It is run by the federal government, accepted by the vast majority of doctors and hospitals in America, and it works the same in every state. What varies locally is the private layer built on top of it: the Advantage, Supplement and drug plans this site teaches you to compare.
What Original Medicare covers
Original Medicare has two halves, and the split is easiest to remember as building versus people:
- Part A, hospital insurance, covers you as an inpatient: hospital stays, skilled nursing after a qualifying stay, hospice, and some home health care.
- Part B, medical insurance, covers the people and services treating you: doctor visits, outpatient care, labs, imaging, preventive services, ambulances and durable medical equipment.
Both halves come with cost sharing. In 2026 the Part A hospital deductible is $1,736 per benefit period, and after the $283 Part B deductible you generally pay 20 percent of Medicare-approved outpatient costs, with no yearly cap.
What it deliberately leaves out
Original Medicare was designed in 1965 and still shows it. It does not cover most outpatient prescriptions (that is Part D), routine dental cleanings or dentures, eye exams for glasses, hearing aids, or long-term custodial care. The private market fills those gaps through add-on coverage and plan design, which is exactly why the choice you make in Lesson 2 matters.
The two roads every beneficiary chooses between
| Road 1: Original Medicare + extras | Road 2: Medicare Advantage | |
|---|---|---|
| Core coverage | Parts A and B from the government | Parts A and B delivered through a private plan |
| Usually added | Medigap plan + Part D drug plan | Drug coverage and extras built in |
| Feels like | Freedom with a fixed monthly cost | Managed care with a low premium |
| Learn more | Medicare Supplement | Medicare Advantage |
People do not struggle with Medicare because they lack intelligence. They struggle because they are handed four parts, ten plan letters and seven enrollment windows all at once, usually by mail, in fine print. Taken one lesson at a time, none of it is hard.