How to Apply for Medicare: Step by Step

The short answer: You apply for Medicare through Social Security — online at ssa.gov, by phone, or at a local office — and the online application typically takes under half an hour. If you are already receiving Social Security benefits at 65, Parts A and B start automatically and no application is needed. The application itself is the easy part; the decisions that ride on top of it are where the real work lives.

People brace for Medicare enrollment like it is a tax audit, and then the application turns out to be the simplest step of the whole year. Here is the process start to finish — what to have ready, what happens after you file, and the two decisions the application does not make for you.

First: do you even need to apply?

If you are already receiving Social Security (or Railroad Retirement) benefits when you turn 65, enrollment in Parts A and B happens automatically — your card arrives in the mail in the months before your birthday. Your job is to verify it came, decide whether to keep Part B (almost everyone should, unless qualifying employer coverage says otherwise), and move on to the real decisions below.

Everyone else — which increasingly means everyone, since most people now claim Social Security after 65 — applies on their own.

When to apply

Your seven-month window opens three months before your birthday month. Applying in those first three months is what gets coverage started on the first day of your birthday month, with no gap. Still working with qualifying employer coverage? Different calculus — the working-past-65 guide covers when delaying is safe and when it is a trap. The full calendar, including what happens if you miss the window, lives in the timing guide.

Not sure which months are yours? The enrollment calculator turns your birth date into the exact window and shows when coverage would start for each month you could file.

The three ways to apply

• Online at ssa.gov — the route most people use now. Create or sign into your Social Security account, follow the Medicare application, and expect roughly 15 to 30 minutes. You can apply for Medicare alone without claiming Social Security income benefits — the application makes that distinction clear.
• By phone with Social Security — expect a callback appointment during busy seasons; the representative walks the same application with you.
• In person at a Social Security office — book the appointment ahead. Useful when your situation has wrinkles: a short work history, foreign work credits, disability questions.

Have on hand: your Social Security number, birth certificate or citizenship/immigration documentation if requested, and — if you delayed past 65 with employer coverage — the employer form documenting that coverage, which is what keeps penalties off your record.

What happens after you file

Approval usually arrives within a few weeks, followed by your Medicare card with its Medicare number. Guard that number like a credit card — legitimate callers do not phone asking for it, and enrollment season reliably brings out people pretending otherwise. Once the card arrives, verify the start dates match what you expected, set up your online Medicare account, and take a breath. The application is done. The decisions are not.

The two decisions the application does not make

Enrolling in A and B gives you Original Medicare — which still leaves drug coverage and the gap-coverage question entirely up to you:

• Drug coverage: a standalone Part D plan, or a Medicare Advantage plan that includes it. Skipping it entirely starts a permanent penalty clock after 63 days, even for people on no medications.
• The structural choice: Medigap or Medicare Advantage — the two ways to handle what Medicare leaves uncovered. This is the decision with the long shadow, because your six-month Medigap open enrollment window starts ticking when Part B does, and it is the one period when every supplement door is open without health questions.

Sequencing matters: application first, then drug and gap coverage decisions inside the windows the application starts. Done in order, the whole thing is undramatic.

Common questions about applying for Medicare

How long does the Medicare application take?

The online application itself usually runs 15 to 30 minutes, and approval typically follows within a few weeks. The planning around it — employer coverage checks, drug plan selection, the supplement decision — is where the real time goes, and where the real money is won or lost.

Can I apply for Medicare without taking Social Security?

Yes — the two are separate decisions, and keeping them separate is increasingly the norm. Many people enroll in Medicare at 65 and let their Social Security benefit keep growing toward 67 or 70. The ssa.gov application handles the Medicare-only path directly.

What if I only want Part A for now?

That is a supported choice during the application when you have qualifying employer coverage — though remember the HSA rule (contributions must stop once Part A starts) and the retroactivity quirk when filing late. The working-past-65 guide walks through when Part-A-only makes sense.

Do I apply for Medigap or a drug plan through Social Security too?

No — Social Security handles only Parts A and B. Drug plans and supplements are chosen and applied for separately, through the private market. That is exactly the stage where independent, no-cost help earns its keep: the comparison across companies, done for you, with the windows watched.

The simple version

Already on Social Security: watch the mail. Everyone else: ssa.gov, three months before your birthday month, half an hour, done. Then spend your attention where it pays — drug coverage and the Medigap-or-Advantage decision — inside the windows that open when coverage starts. The Turning-65 Checklist holds the whole sequence.

Want a hand with the decisions after the application? Call or text 770-765-7007 — plain-language answers at no cost, and someone who’s still there after you enroll. We’re based in Cumming, Georgia, working with families across North Georgia — and licensed in states across the country, wherever your enrollment finds you.