Express Scripts Medicare - Contact Us


Call 1.866.477.5703, 24 hours a day, 7 days a week, except Thanksgiving and Christmas. TTY users, call 1.800.716.3231.


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

Contact Medicare

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.

Express Scripts Medicare (PDP) is a prescription drug plan with a Medicare contract.
Enrollment in Express Scripts Medicare depends on contract renewal.