For plan questions, you can write to Customer Service at:
Express Scripts Medicare
P.O. Box 66535
St. Louis, MO 63166-6535
Enrollment forms should be mailed to:
Express Scripts Medicare (PDP) Enrollment
P.O. Box 4345
Scranton, PA 18505
Call 1.800.MEDICARE (1.800.633.4227). TTY users, call 1.877.486.2048, 24 hours a day, 7 days a week. You can also visit the official Medicare website at www.medicare.gov.
For general information about Medicare Part D prescription drug coverage, please visit the About Part D section on this website.