What is the initial step in signing up for Medicare Supplements or Medicare Advantage? Your client must be over age 65 and already be signed up for Medicare Parts A & B. Share This Story, Choose Your Platform! FacebookTwitterLinkedInEmail About the Author: admin Leave A Comment Cancel replyComment Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.