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2. How do I enroll in Medicare Part B?

All citizens who are eligible for Medicare Part A will also be eligible for Part B.

Part B is optional, since it has a monthly fee, and additional charges and/or fines could apply if the member does not enroll within a specified time period. Those who fail to enroll in Medicare Part B when they become eligible for the first time and are not eligible for a Special Enrollment Period could face late enrollment penalties. This could entail an increase in the monthly premium of 10% for each 12-month period during which you were eligible for Part B but did not enroll. You would have to pay this higher premium as long as you have Medicare Part B.

To enroll in Part B:

  • Send an online application to Social Security. If you already started filling out your online application and have a re-entry number, you may log in again to complete your application.
  • Visit your local Social Security Office.
  • Call Social Security at 1-800-772-1213 (TTY: 1-800-325-0778).
  • If you are or were a railroad worker, please contact the Railroad Retirement Board (RRB) at 1-877-772-5772.
  • Complete your Part B enrollment application (CMS-40B). The form and instructions are available in English. And please remember that you must have Part A to be able to apply for Part B.

The amount payable for Part B will be calculated based on the member’s reported income tax.

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