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How & When to Enroll in Medicare

Understanding when to enroll is just as important as what to enroll in. Missing your window can mean permanent penalties.

Medicare Enrollment Timeline

1
3 Months Before Age 65

Initial Enrollment Period (IEP) Begins

Your IEP is a 7-month window. Sign up at ssa.gov, call Social Security (1-800-772-1213), or visit your local SSA office.

2
Your Birthday Month

Coverage Can Begin

Enroll in the first 3 months = coverage starts your birthday month. Later = delayed start.

3
If You Have Employer Coverage

Special Enrollment Period (SEP)

Employer group coverage lets you delay Part B without penalty. When it ends, you get an 8-month SEP. COBRA and Marketplace do NOT count.

4
January 1 – March 31 Each Year

General Enrollment Period (GEP)

Missed your IEP? Sign up during GEP. Coverage starts July 1. Late penalties may apply.

5
After Enrolling in A & B

Choose: Advantage or Supplement

Add Medigap + Part D, or switch to Medicare Advantage. We compare every option free.

Read our full Turning 65 guide for the details that trip people up →

Enroll Online

Ready to Enroll? Start Your Application

If you already know which plan you want, you can begin your enrollment through our secure portal. If you're not sure yet, get free guidance first.

ECOS Medicare Solutions — Enrollment Portal

Access our secure enrollment portal to compare plans and begin your Medicare application online.

Open Enrollment Portal

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Enroll by Phone

Speak directly with Darin for guided enrollment assistance.

(720) 295-2611
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Request a Comparison

Not sure which plan? We'll compare every option in your zip code.

Contact Form

Ready to Find the Right Medicare Plan?

Turning 65, switching plans, or want better coverage — we're here. Free. Unbiased. Expert.

(720) 295-2611