Mr. Wendt suffers from diabetes which has gotten progressively worse during the last year. He is currently enrolled in Original Medicare (Parts A and B) and a Part D prescription drug plan and did not enroll in a Medicare Advantage (MA) plan during the last annual open enrollment period (AEP) which has just closed. Mr. Wendt has heard certain MA plans might provide him with more specialized coverage for his diabetes and wants to know if he must wait until the next annual open enrollment period (AEP) before enrolling in such a plan. What should you tell him?