How Medicare Works

Step-by-Step: How Medicare Works When You Turn 65

Turning 65 is your first big Medicare milestone. Here’s a simple, easy-to-follow walkthrough so you know exactly what to do and when to do it.

Step 1: Know Your Enrollment Window

You get a 7-month Initial Enrollment Period (IEP):

3 months before your 65th birthday month
Your birthday month
3 months after

Best advice: Enroll early (during the 3 months before your birthday month) so your coverage starts on time.

Step 2: Are You Automatically Enrolled?

You may be automatically enrolled in Part A and Part B if:

You’re already receiving Social Security benefits
You’re receiving Railroad Retirement benefits

If yes → Your Medicare card will arrive in the mail.

If no → You must sign up yourself through Social Security (online, phone, or local office).

Step 3: Understand What You’re Enrolling In

When you sign up at 65, you’re enrolling in:

Part A – Hospital coverage
Part B – Doctor & outpatient coverage

Together, they are called Original Medicare.

Step 4: Decide If You Need Drug Coverage

Original Medicare does NOT include prescriptions.

You’ll need to:

Add a Part D drug plan
OR
Choose a Medicare Advantage (Part C) plan that includes drug coverage.

If you don’t enroll in drug coverage when first eligible (and don’t have other creditable coverage), you may face a late enrollment penalty later.

Step 5: Choose Your Coverage Path

After enrolling in Part A & B, you have two main directions:

Option 1: Stay with Original Medicare

You can add:

A Medicare Supplement (Medigap) plan (helps cover deductibles & coinsurance)
A Part D drug plan

See almost any doctor nationwide who accepts Medicare

More predictable costs (with Medigap)

Option 2: Choose Medicare Advantage (Part C)

Replaces Original Medicare
Often includes prescription drugs
May include dental, vision, hearing benefits
Has an annual out-of-pocket limit
Uses provider networks (HMO/PPO)

Bundled coverage
Often lower upfront premiums
Extra benefits

Step 6: Confirm Your Coverage Start Date

If you enroll:

Before your birthday month → Coverage starts the 1st of your birthday month
If you enroll later → Coverage may start 1–3 months later

Enrolling early prevents delays.

Step 7: Review Costs

At 65, most people pay:

Part A: $0 premium (if eligible)
Part B: Monthly premium

Additional costs depending on whether you choose Medigap, Part D, or Advantage

Is Your Current Plan Still the Best Fit?

We’ll help you compare your current coverage and uncover better options at no cost.