“I know nothing.” “What is A and B?” “Why is it all separate?” — real questions from real first calls with me. If Medicare feels like alphabet soup, you are in the majority, not the minority. Let's fix that in about eight minutes of reading.
Medicare is the federal health insurance program for people 65 and older (and some younger people with disabilities). The confusion isn’t your fault: Medicare was built in layers over 60 years, and each layer got its own letter. Here’s the whole alphabet, in plain English, in the order the decisions actually happen.
Part A: the hospital side
Part A covers inpatient hospital stays, skilled nursing after a hospital stay, hospice, and some home health. If you (or your spouse) worked and paid Medicare taxes for about 10 years, you’ve already paid for Part A — there’s no monthly premium. This is the easy one: nearly everyone takes Part A at 65.
Part B: the everything-else side
Part B covers doctor visits, outpatient care, lab work, preventive services, and equipment like walkers or oxygen. It has a monthly premium (the standard 2026 amount is $202.90, and higher earners pay more). Part B is where the real decisions start — because when you take it depends on whether you’re still working with employer coverage, and getting that timing wrong can mean a penalty that lasts the rest of your life. If you’re still working at 65, don’t guess: this is worth a ten-minute conversation before your birthday month.
The fork in the road: two ways to arrange everything else
Once you have A and B, you face the one decision that shapes everything after it. One client described the moment perfectly:
“So where do we start?” — the most common question on my calls, usually asked while staring at a stack of mail. The answer: start with the fork, not the mail.
Path one — Medicare Advantage (Part C): a private plan that bundles A, B, and usually D into one card, often with extras like dental and vision, often with a $0 plan premium. The trade: you use the plan’s network of doctors and hospitals, and you pay as you go — copays and coinsurance up to an annual out-of-pocket maximum.
Path two — Original Medicare plus a Medigap supplement plus a Part D drug plan: more moving pieces and a monthly supplement premium, but almost any doctor who takes Medicare is available to you, and the supplement absorbs most of the costs Medicare doesn’t cover.
Neither path is “right.” Your health, your doctors, your prescriptions, your travel habits, and your budget decide it — which is why generic advice fails and why I wrote a whole article on this one decision.
Part D: don’t skip it, even if you take no medications
Part D covers prescriptions, through a stand-alone plan or built into an Advantage plan. Here’s what surprises people: skipping drug coverage because you’re healthy triggers a penalty that grows every month you wait and never goes away once you enroll later. Even the healthiest 65-year-olds usually want the least expensive drug plan available — as a placeholder against the penalty and the unexpected.
The five-minute version
Take A at 65 (it’s usually free). Decide about B based on whether you’re still working with real employer coverage. Then choose your path: Advantage’s convenience and low premiums with a network, or Original-plus-supplement’s flexibility with a monthly cost. Cover your drugs either way. And do all of it inside your enrollment window — the 7 months around your 65th birthday — because Medicare forgives very little about timing.
Where to go from here
Schedule a free Medicare consultation — a conversation about your doctors, prescriptions, and timeline, not a pitch. Want the full picture first? Get the free digital edition of my book, 64+. Or search the plans available at your zip code yourself.
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Written and reviewed by Michael Smith, licensed insurance broker, founder of Guardian Health & Wealth, an independent Medicare agency serving clients nationwide, and author of 64+: Your Ultimate Guide to Medicare & Retirement Planning.
We do not offer every plan available in your area. Currently we represent organizations which offer products in your area. Please contact Medicare.gov, 1-800-MEDICARE, or your local State Health Insurance Program (SHIP) to get information on all of your options.