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What you need to know to enroll in a Medicare supplement plan

  1. Get a free, no-obligation quote to compare plans and premiums.
  2. Enroll online yourself! Here's all you will need during your Medicare supplement open enrollment period:
    • Your Original Medicare ID card. Haven't yet enrolled? It's easy! Find out how.
    • Any other insurance information you may have.
    • Your medical history. You will need to provide information regarding your health condition.

When to enroll in Medicare supplement

Initial Enrollment Period

When you’re first eligible for Medicare, you have a seven-month Initial Enrollment Period to sign up for Original Medicare (Part A and Part B) and any additional coverage you may need (such as Medicare supplement and Part D prescription drug coverage, or Medicare Advantage).

The Initial Enrollment Period occurs three months before your 65th birthday, your birthday month and three months after.

If you decide to work past age 65, the timing of your Initial Enrollment Period may be based around your retirement date rather than your 65th birthday. You can learn more by reviewing our Working Past Age 65 information.

Initial Enrollment Period is 3 months prior to your birthday month and 3 months after your birthday month

General Enrollment Period

If you missed your Initial Enrollment Period, your next opportunity to enroll in a Medicare plan is the General Enrollment Period. But remember, because you missed your Initial Enrollment Period, you may be subject to late enrollment penalties.

The General Enrollment Period happens every year from Jan. 1 to March 31. If you sign up during this period, your coverage will be effective on July 1. This means you may have a gap in coverage.

Initial Enrollment Period is 3 months prior to your birthday month and 3 months after your birthday month

Special Enrollment Period

A Special Enrollment Period can happen at any time of the year. Depending on your type of Special Enrollment Period, you may have 60 days before or after the event to review your Medicare options and select new coverage.

If you've experienced a special circumstance, like moving to a different state or the loss of other health insurance coverage, such as through a previous job, you may qualify for a Special Enrollment Period.

There are three ways to sign up for a Medicare supplement plan:

Apply Securely Online opens new window

Applying online is easy. Tailored for you, the prices you see during Medicare supplement online enrollment tells you exactly how much you'll pay each month — no surprises. Enroll today!

Call: 1-800-336-0505 opens new window

Available Monday–Friday, 8 a.m.–5 p.m. CT, Wellmark representatives are ready to answer your questions about enrolling in Medicare supplement and help you discover the best plan option for you.

Find an Agent opens new window

If you want customized, one-on-one assistance choosing the right coverage, find an agent in your area to walk you through your options – at no cost to you.