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How to Sign Up for Medicare in 2026: Step-by-Step Enrollment Guide

## **Important Disclaimer:** *This information is for educational purposes only and does not constitute marketing of any specific Medicare plan. Please contact Medicare.gov, 1-800-MEDICARE, or your local State Health Insurance Assistance Program (SHIP) to get information on all of your options. This material is not affiliated with or endorsed by the federal Medicare program.*

**How to Sign Up for Medicare in 2026: A Step-by-Step Walkthrough**

**Quick Answer:** You sign up for Medicare Part A and Part B through the **Social Security Administration** — not Medicare directly. The fastest way is online at SSA.gov, which takes about 10–30 minutes. If you're already receiving Social Security benefits at least 4 months before turning 65, you're enrolled automatically and your card arrives in the mail — you don't need to do anything. If you're NOT yet collecting Social Security, you must apply yourself. After enrolling in Parts A and B, you separately choose a Part D drug plan, and optionally a Medigap or Medicare Advantage plan, through Medicare.gov. This guide walks through exactly how to do each step.

You know *when* to sign up for Medicare and you understand the parts — but when it actually comes time to enroll, a surprisingly common question stops people in their tracks: *"Wait… where do I even go to do this?"*

This guide answers that. It's the practical, click-by-click walkthrough of actually signing up — the mechanics most overviews skip. (If you still need to understand enrollment *timing* and deadlines, see our post "5 Things to Know Before You Turn 65" first.)

**First, the Most Important Thing: You Sign Up Through Social Security**

This trips up almost everyone, so let's clear it up immediately: **you don't sign up for Medicare through Medicare.** You sign up for Medicare Parts A and B through the **Social Security Administration (SSA)**.

Why? Because Social Security handles the enrollment records and premium withholding for Medicare. When you sign up through Social Security, you can coordinate your retirement and Medicare choices and have any premiums withheld from your benefit payments. Medicare.gov is where you later shop for drug plans and Advantage/Medigap plans — but the initial Part A and Part B enrollment happens at Social Security.

(One exception: if you or your spouse worked for a railroad, you enroll through the Railroad Retirement Board at 1-877-772-5772 instead.)

**Step 1: Figure Out If You Need to Do Anything at All**

Before you do anything, determine which situation you're in — because some people are enrolled automatically and some must act.

**You're Enrolled AUTOMATICALLY if:**

You're already receiving Social Security (or Railroad Retirement Board) benefits at least 4 months before you turn 65. In this case:

• Medicare enrolls you in **both Part A and Part B automatically**
• Your red, white, and blue Medicare card arrives in the mail **about 3 months before** your coverage starts
• **You don't need to do anything** — though you can choose to decline Part B if you have other qualifying coverage (since Part B has a premium)

You're also automatically enrolled if you've received Social Security disability benefits for 24 months (coverage begins the 25th month), or immediately if you have ALS and receive disability benefits.

**You Must Sign Up YOURSELF if:**

You are NOT yet receiving Social Security benefits — because you're still working, or you're delaying your Social Security claim. This is increasingly common as people work longer and wait to claim Social Security for a larger benefit. In this case, **nothing happens automatically** — you must actively apply. This is one of the most common and costly Medicare mistakes: assuming enrollment is automatic when it isn't.

*Note: Residents of Puerto Rico and foreign countries get Part A automatically but must actively elect Part B.*

**Step 2: Gather Your Documents Before You Start**

Having everything ready turns a 30-minute application into a 10-15 minute one. You'll typically need:

• Your **Social Security number**
• Your **birth certificate** or other proof of U.S. citizenship or legal residency
• Your **bank account information** (for premium payments or benefit direct deposit)
• If you have **current health coverage** (especially employer coverage you're keeping), the insurance details — including the plan start date
• If you're enrolling through a **Special Enrollment Period** after employer coverage, your employer may need to complete **Form CMS-L564** (proof of group health coverage)

**Step 3: Choose Your Enrollment Method**

You have three ways to apply for Parts A and B. Here they are, fastest to slowest:

**Method 1: Online at SSA.gov (Fastest — Recommended)**

The online application is the easiest and fastest way to enroll, available 24/7, and takes about 10–30 minutes. Key things to know:

• You'll first need to **create a free "my Social Security" account** at SSA.gov (this uses the Login.gov system). Set this up before you start the application.
• The application is **mobile-friendly** — you can complete it on a phone or tablet
• You can **save your progress** and return later if needed
• You'll choose whether you want **just Medicare** ("Medicare Only") or Medicare *and* Social Security retirement benefits at the same time

**Method 2: By Phone**

Call Social Security at **1-800-772-1213** (TTY 1-800-325-0778), Monday through Friday. A representative will walk you through the application. Simply tell them you want to sign up for Medicare Part A and Part B (or Part A only).

**Method 3: In Person**

Visit your local Social Security office. It's best to **call ahead and schedule an appointment** to avoid long waits. This option is helpful if your situation is complex or you'd prefer face-to-face guidance.

**Step 4: Decide — Part A Only, or Part A AND Part B?**

During the application, you'll make an important choice. Here's the key thing to understand about how the online form handles it:

• **Part A is assumed.** The application doesn't even ask if you want Part A (since it's premium-free for most people) — it's automatically included.
• **Part B is the decision point.** When the application asks whether you want to enroll in Part B, your answer depends on your situation:
  • **Answer YES** if you want both Part A and Part B (the right choice for most people enrolling at 65 without other coverage)
  • **Answer NO** if you only want Part A right now — typically because you have qualifying employer coverage and plan to delay Part B without penalty

**A word of caution:** Only delay Part B if you genuinely have qualifying coverage from a current employer (with 20+ employees). Delaying Part B without qualifying coverage triggers a permanent late enrollment penalty — 10% added to your premium for every 12 months you delay. For more on this decision, see our Retirement Planning post.

**Step 5: Submit and Track Your Application**

Once you submit:

• You can **check your application status anytime** in your my Social Security account
• Look for the **"Benefit Verification Letter"** — once it shows your Part A and/or Part B start date and your Medicare number, your enrollment is confirmed and your card is on its way
• This letter is itself **proof of Medicare coverage** — you can use it to move forward with a Part D, Medigap, or Medicare Advantage plan *before* your physical card even arrives

**Step 6: Watch for Your Medicare Card**

After you sign up, Social Security mails you a **welcome package with your Medicare card**:

• For those who signed up manually, the card generally arrives **within about 2 to 6 weeks** after your application is approved
• For those enrolled automatically, the card arrives **about 3 months before** your coverage start date

Keep your card in a safe place. Your Medicare Number on the card is what providers use to bill Medicare — treat it like a credit card number and protect it.

**Step 7: Add Drug Coverage (Part D) — A Separate Step**

Here's something many people don't realize: **Part D prescription drug coverage is NOT part of the Social Security application.** You enroll in it separately. After you have Parts A and B:

• Go to **Medicare.gov** and use the **Plan Finder** tool, which lets you enter your specific medications and pharmacy to compare plans, OR
• Contact a Part D plan directly to enroll

**Don't skip this step if you take any medications** — or even if you don't. Going 63+ continuous days without creditable drug coverage triggers a permanent Part D late enrollment penalty (1% of the national base beneficiary premium — $38.99 in 2026 — for every month you went without). For the full picture, see our Part D Late Enrollment Penalty post.

**Step 8: Choose Your Coverage Path — Medigap or Medicare Advantage (Optional)**

Finally, decide how you want to round out your coverage. This is also done through Medicare.gov or a licensed agent, not Social Security:

• **Original Medicare + Medigap:** Add a Medigap supplement to help cover deductibles and coinsurance. **Critical timing note:** your one-time, 6-month Medigap Open Enrollment Period starts when your Part B begins — don't miss it, because that's when you have guaranteed acceptance.
• **Medicare Advantage (Part C):** Replace Original Medicare with a bundled private plan, often including drug coverage and extras.

For help deciding, see our post "Medicare Advantage vs. Medigap: Which Is Right for You in 2026?"

**The Whole Process at a Glance**

**Frequently Asked Questions**

**Where do I actually sign up for Medicare?**

You sign up for Medicare Part A and Part B through the Social Security Administration — not through Medicare itself. The fastest way is online at SSA.gov, but you can also call 1-800-772-1213 or visit a local Social Security office. (Part D drug plans and Medigap/Medicare Advantage plans are chosen separately through Medicare.gov.) If you or your spouse worked for a railroad, you enroll through the Railroad Retirement Board instead.

**Do I have to sign up for Medicare, or is it automatic?**

It depends. If you're already receiving Social Security benefits at least 4 months before turning 65, you're enrolled automatically in Parts A and B and your card arrives in the mail — no action needed. If you're NOT yet receiving Social Security (because you're still working or delaying your claim), you must actively sign up yourself. Don't assume it's automatic — that's a common, costly mistake.

**How long does the online Medicare application take?**

About 10 to 30 minutes — and as little as 10–15 minutes if you have your documents ready. You'll first need to create a free "my Social Security" account at SSA.gov. The application is mobile-friendly and lets you save your progress and return later.

**What documents do I need to sign up for Medicare?**

You'll typically need your Social Security number, proof of U.S. citizenship or legal residency (like a birth certificate), bank account information, and details of any current health coverage you have. If you're enrolling through a Special Enrollment Period after employer coverage, your employer may need to complete Form CMS-L564.

**How do I sign up for just Part A and delay Part B?**

On the online application, Part A is automatically included. When the form asks if you want Part B, answer NO to enroll in Part A only. Only do this if you have qualifying coverage from a current employer (20+ employees) — otherwise, delaying Part B triggers a permanent late enrollment penalty. Later, when your employer coverage ends, you'll use form CMS-40B and your Special Enrollment Period to add Part B.

**When will my Medicare card arrive after I sign up?**

If you enrolled manually, your card generally arrives within about 2 to 6 weeks after your application is approved. If you were enrolled automatically, it arrives about 3 months before your coverage begins. You don't necessarily have to wait for the physical card — once your Benefit Verification Letter in your my Social Security account shows your Medicare number and start date, you can use it to sign up for additional coverage.

**Do I sign up for Part D drug coverage at the same time?**

No. Part D is a separate enrollment, not part of the Social Security application. After you have Parts A and B, you enroll in a standalone Part D plan through Medicare.gov's Plan Finder or by contacting a plan directly. Don't delay — going 63+ days without creditable drug coverage triggers a permanent penalty.

**The Bottom Line on Signing Up for Medicare**

The single most important thing to remember: **you enroll in Medicare Parts A and B through Social Security, and the online application at SSA.gov is the fastest, easiest way to do it.** From there, Part D and your choice of Medigap or Medicare Advantage are separate steps handled through Medicare.gov.

The process itself is genuinely straightforward once you know where to go — most people are surprised how quick the online application is. The two things that catch people out are (1) assuming enrollment is automatic when it isn't, and (2) forgetting that drug coverage and supplements are separate steps. Handle those, and you'll be fully covered without gaps or penalties.

If you ever feel stuck, free help is available — and it's genuinely free. Your local SHIP and licensed Medicare agents (paid by carriers, not by you) can walk you through every step.

**Need Additional Help?**

For help signing up for Medicare:

• **Apply online or learn more at SSA.gov** — the fastest way to enroll in Parts A and B
• **Call Social Security at 1-800-772-1213** (TTY 1-800-325-0778) to apply by phone or schedule an appointment
• **Visit Medicare.gov** to compare and enroll in Part D, Medigap, or Medicare Advantage plans
• **Call 1-800-MEDICARE** for general Medicare questions
• **Contact your local State Health Insurance Assistance Program (SHIP)** for free, unbiased, one-on-one enrollment help

**Required Compliance Disclaimers:**

*For agent use only. Not affiliated with the U.S. federal government or federal Medicare program. This information is provided for educational purposes only and does not constitute marketing of any specific Medicare plan.*

*For official Medicare information, please visit Medicare.gov or call 1-800-MEDICARE. You can also contact your local State Health Insurance Program (SHIP) for personalized assistance.*