Welcome to the Third Party Administrator (TPA)

The TPA website is the gateway to the Coverage Gap Discount Program (CGDP). The TPA is the single organization entity responsible for facilitating the transfer of CGDP funds between Pharmaceutical Drug Manufacturers and Part D Health Plan Sponsors.

Visitors to the website can access information about the CGDP including information regarding invoicing and payment procedures. In addition, users can access valuable links to CMS instructions and other official resources.

Important Update

Preparing for the Q2 2021 CGDP invoicing period

Manufacturers and Part D Sponsors are required to update bank account information via the Medicare Coverage Gap Discount Program Portal. Learn More

CGDP Cutoff Dates


Reporting Period: Q2 2021
Invoice Distribution: 8/31/2021
Invoice Payment Deadline: 10/9/2021
Disputes Submission Deadline: 10/31/2021

Learn More >