Registration is now open to all suppliers interested in participating in Round 1 2017 of the Medicare Durable Medical Equipment, Prosthetics, Orthotics, and Supplies (DMEPOS) Competitive Bidding Program. In order to submit a bid, you are required to register in CMS' Enterprise Identity Management (EIDM) system to obtain a user ID and password to access the online DMEPOS bidding system (DBidS).