When Can I Enroll In Medicare Part D For 2015? 
Aging into Medicare means three months prior and three months after your 65th birthday . At 65 you have some important decisions to make concerning medicare and medicare supplement plans including Part D. Also , if you have a significant change in your health or medication , and your current plan does not include your medication in it 's formulary , there is period to make a change outside of the open enrollment period . 