Since he's on an advantage plan and unless he's now T65 the above suggestion won't work.
Rick
Why?
The Med Supp is GI based on the move. It will trigger the MAPD disenrollment.
Do the Med Supp for 7/1. Tell client to get his drugs prior to 7/1. Enroll him with current list for Part D. If new doc changes anything, enroll in a new Part D for 8/1. He's still within the days.
Or just enroll him on whats he on and tell him its only for 6 months.