Turning 65? Here's Your Medicare Timeline

Timeline Overview

Your Initial Enrollment Period (IEP) is a 7-month window centered around your 65th birthday. It starts 3 months before your birthday month and ends 3 months after. Enrolling early in this window ensures your coverage starts on time with no gaps.

1. 1

   Research Your Medicare Options

   Start learning about Original Medicare (Parts A & B), Medicare Supplement (Medigap), Medicare Advantage (Part C), and Part D prescription drug plans.

2. 2

   Review Your Current Coverage

   If you have employer coverage, COBRA, VA benefits, or marketplace insurance, understand how they'll interact with Medicare.

3. 3

   Check Your Social Security Status

   If you're already receiving Social Security benefits, you'll be automatically enrolled in Medicare Parts A and B. If not, you'll need to sign up manually.

4. 4

   Estimate Your Costs

   Review 2026 Medicare premiums, deductibles, and out-of-pocket costs. Consider whether you'll need supplemental coverage.

1. 1

   Your Initial Enrollment Period (IEP) Starts

   Your 7-month IEP begins 3 months before your 65th birthday month. This is the best time to enroll to avoid coverage gaps.

2. 2

   Sign up for Medicare Part a and Part B

   Apply online at ssa.gov, by phone at 1-800-772-1213, or at your local Social Security office. If receiving Social Security, you may be auto-enrolled.

3. 3

   Choose Supplemental Coverage

   Decide between a Medicare Supplement (Medigap) plan or a Medicare Advantage plan. Compare plans available in your area.

4. 4

   Enroll in Part D if Needed

   If you choose Original Medicare + Medigap, you'll need a standalone Part D plan for prescription drug coverage. Medicare Advantage plans often include drug coverage.

1. 1

   Medicare Coverage Can Begin

   If you enrolled during the first 3 months of your IEP, your coverage starts on the 1st of your birthday month (or the 1st of the prior month if your birthday is on the 1st).

2. 2

   Receive Your Medicare Card

   Your red, white, and blue Medicare card should arrive in the mail. Keep it safe — you'll need it for doctor visits and when enrolling in additional plans.

3. 3

   Medigap Open Enrollment Begins

   Your 6-month Medigap Open Enrollment Period starts the month your Part B coverage begins. During this window, insurance companies cannot deny you coverage or charge more due to pre-existing conditions.

1. 1

   IEP Ends — Last Chance to Enroll without Penalty

   Your Initial Enrollment Period closes 3 months after your birthday month. If you haven't enrolled yet, do so immediately to minimize coverage gaps.

2. 2

   Late Enrollment May Delay Coverage

   If you enroll in the last 3 months of your IEP, your coverage won't start until 1-3 months after you sign up.

3. 3

   Review Your Coverage Choices

   Make sure your doctors accept Medicare and that your prescriptions are covered by your Part D or Medicare Advantage plan.

Initial Enrollment Period (IEP) Chart

When you enroll during your Initial Enrollment Period determines when your coverage starts. Enrolling early is always better — here's a month-by-month breakdown:

After You Enroll

Once you've enrolled in Medicare, there are a few important things to take care of in the weeks and months that follow:

• Set up Your MyMedicare.gov Account

  Access your claims, coverage details, and preventive services schedule online.

• Schedule Your Welcome to Medicare Visit

  A free preventive visit within the first 12 months of Part B coverage. Includes health risk assessment and screenings.

• Review Your Prescription Coverage

  Make sure your medications are covered by your Part D or Medicare Advantage plan's formulary.

• Notify Your Current Insurer

  If you're transitioning from employer coverage or marketplace insurance, coordinate the end date with your Medicare start date.

Late Enrollment Penalties

Missing your enrollment window can result in permanent premium increases. These penalties are added to your monthly premiums for as long as you have Medicare.

Part B Late Enrollment Penalty

Permanent

If you don't sign up for Part B when you're first eligible and don't have creditable coverage, you'll pay a 10% premium surcharge for each full 12-month period you could have had Part B but didn't.

Example: If you waited 2 years to enroll, your Part B premium would be 20% higher than the standard premium — for the rest of the time you have Medicare.

Part D Late Enrollment Penalty

Permanent

If you go 63+ consecutive days without creditable prescription drug coverage, you'll pay a penalty when you eventually enroll in Part D.

Example: The penalty is 1% of the national base beneficiary premium ($38.99 in 2026) multiplied by the number of months you went without coverage.

Frequently Asked Questions

What if My Birthday is on the 1st of the Month?

I'm still working at 65. Do I need to enroll?

What if I Have COBRA When I Turn 65?

Can I Change My Mind after Enrolling?

How do I Sign up for Medicare?

Will I Get a Medicare Card in the Mail?