MEDICARE 101
Medicare, Explained Simply.
No jargon, no pressure – just clear answers about how Medicare works, what each part covers, when to enroll, and the mistakes that cost people the most.
THE BASICS
What is Medicare?
Medicare is the federal health insurance program for people age 65 and older, and for some younger people with certain disabilities or conditions. It’s run by the federal government, not by any single insurance company — which is exactly why the options can feel confusing.
- Administerd by the Centers for Medicare & Medicaid (CMS)
- Most people become eligible at age 65
- Funded through payroll taxes, premiums, and general revenue
- Made up of four parts – A, B, C, and D – each covering something different
WHY IT FEELS COMPLICATED
Medicare isn't one plan — it's a system of parts and private options you piece together. That's where an independent advisor earns their keep: comparing what's actually available in your area against your doctors, medications, and budget.
Parts A, B, C & D
Each part of Medicare covers a different piece of your care. Here's what each one actually pays for.
Part A
Covers inpatient hospital stays, skilled nursing facility care, hospice, and some home health care. Most people get this premium-free if they've paid Medicare taxes long enough.
Part B
Covers doctor visits, outpatient care, preventive services, and durable medical equipment. Comes with a monthly premium based on your income.
Part C
An all-in-one alternative sold by private insurers, bundling Parts A & B (and usually D) — often with extras like dental, vision, and hearing.
Part D
Covers prescription medications through private, Medicare-approved insurers. Plans vary widely by which drugs they cover and at what cost.
Enrollment Periods
Missing a deadline can mean gaps in coverage or lasting penalties. Here are the windows that matter most.
Initial Enrollment Period (IEP)
Begins 3 months before the month you turn 65, includes your birthday month, and runs 3 months after. This is your first chance to enroll in Parts A and B.
Annual Enrollment Period (AEP)
Every year, you can switch Medicare Advantage plans, change Part D drug plans, or move between Original Medicare and Medicare Advantage. Changes take effect January 1.
Medicare Advantage Open Enrollment
If you're already in a Medicare Advantage plan, you get one chance to switch to a different Advantage plan or move back to Original Medicare.
Special Enrollment Period (SEP)
Triggered by qualifying life events — losing employer coverage, moving, losing Medicaid, and others. The window and rules depend on the event.
Common Mistakes
Most Medicare regrets trace back to one of these. A quick review before you decide can prevent all of them.
Missing your Initial Enrollment Period
Delaying Part B without other creditable coverage can trigger a lifetime late-enrollment penalty added to your premium.
Assuming Medicare covers everything
Original Medicare doesn't cap out-of-pocket costs and doesn't cover most dental, vision, or hearing care — a Supplement or Advantage plan fills those gaps.
Picking a plan on price alone
The lowest premium can mean a narrower doctor network or a drug formulary that doesn't include your medications. Cost and fit matter equally.
Not checking the plan every year
Plan formularies, networks, and costs change annually. A plan that fit last year may not be the best option this AEP.
Going without prescription drug coverage
Skipping Part D — even if you take no medications now — can lead to a permanent late penalty if you enroll later.
Enrolling without unbiased guidance
Carrier reps can only discuss their own plans. An independent advisor compares options across the market for free.