The Centers for Medicare and Medicaid Services (CMS) is in the process of distributing newly-designed Medicare cards. As part of the Medicare Access and CHIP Reauthorization Act of 2015, Congress mandated the removal of Social Security numbers from Medicare cards to guard against identity theft. The new cards contain a unique Medicare number for each individual. Cards are being mailed out between April 2018 and April 2019 on a schedule organized by state of residence. Learn more here.