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CMS L-564 Form Frequently Asked Questions

How do I enroll in Medicare Plan B for the first time?

Medicare will enroll you in Part B automatically. Your Medicare card will be mailed to you about 3 months before your 65th birthday. If you're not getting disability benefits and Medicare when you turn 65, you'll need to call or visit your local Social Security office, or call Social Security at 1-800-772-1213.

Are you automatically signed up for Medicare Plan B?

You get Part A automatically. If you want Part B, you need to sign up for it. If you don't sign up for Part B within 3 months of turning 65, you might have to wait to sign up and pay a monthly late enrollment penalty.

What is a CMS L-564 form for?

This form is used for proof of group health care coverage based on current employment. This information is needed to process your Medicare enrollment application. The employer that provides the group health plan coverage completes the information about your health care coverage and dates of employment.

Where do I fax CMS-L564?

You can complete form CMS-40B (Application for Enrollment in Medicare – Part B [Medical Insurance]) and CMS-L564 (Request for Employment Information) online. You can also fax the CMS-40B and CMS-L564 to 1-833-914-2016; or return forms by mail to your local Social Security office.

What forms are needed for Medicare Part B?

Fill out Form CMS-40B (Application for Enrollment in Medicare Part B). Send the completed form to your local Social Security office by fax or mail. Call 1-800-772-1213. TTY users can call 1-800-325-0778.

Can I fill out the CMS‑L564 form online?

Yes. You can complete Form CMS‑L564 online, print it and fax or mail it to Social Security along with Form CMS‑40B.

Who should sign the CMS‑L564 form?

An authorized official from your current employer or your spouse’s employer must complete and sign the form to verify group health plan coverage.

What if I lose my CMS‑L564 form?

You can obtain a new copy from Social Security or your employer; be sure to submit it promptly so your Medicare enrollment isn’t delayed.

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