A Medicare enrollment form is the form required to enroll in Medicare, according to the Social Security Administration. The form is available at any Social Security office or online at SSA.gov.
The online application is available to anyone who is at least 64 years and 9 months old, according to the SSA. The applicant should not already have any type of Medicare coverage and should not be applying to receive Social Security benefits at the time or be an active recipient of benefits.
The online enrollment application for Medicare can be started and resumed without losing information entered on the form, and it is submitted electronically, so there's no need to visit a local SSA office. Filing the form online also allows the filer to check the application's status online.