If you already receive Social Security Benefits such as Retirement, Disability (SSDI) or Supplemental Security Income (SSI) you will automatically be enrolled in Medicare at age 65 or when you qualify with disability benefits. To enroll on your own behalf, visit the Social Security website at: The United States Social Security Administration | SSA, call your local Social Security office for an appointment, or contact your Elder Benefit Specialist. Welcome to Medicare | Medicare this website allows you to explore your Medicare options including comparing prescription drug, supplemental and advantage plans as well as research Medicare coverage.