How do I sign up for Medicare Part B if I already have Part A?

If you already have Medicare Part A and wish to sign up for Medicare Part B, please complete form CMS 40-B, Application for Enrollment in Medicare - Part B (Medical Insurance), and take or mail it to your local Social Security office. You can also call Social Security’s toll-free number 1-800-772-1213 (TTY 1-800-325-0778).  or contact your local Social Security office.

More Information
Medicare Benefits
Center of Medicare & Medicaid Services

Other FAQ You May Find Helpful
Can I sign up for Medicare Part B if I am working and have health insurance through an employer?
 

 

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Topic Information
  • Topic #: 34011-3774
  • Date Created: 03/31/2014
  • Last Modified Since: 01/09/2017
  • Viewed: 197256