October 15th marked the start of the Medicare Open Enrollment period which lasts until December 7th. During this time, people 65 and older can switch to a different prescription drug plan (Part D) or Medicare Advantage program (Part C) or switch from Medicare Advantage to Original Medicare (Parts A/B). Oh joy.
http://www.timegoesby.net/weblog/2016/10/medicare-open-enrollment-for-2017