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

Q4 2023 Invoices Have Been Distributed

The Q4 2023 Medicare Part D CGDP invoices and reports have been distributed to Pharmaceutical Manufacturers and Part D Sponsors. The distribution process was completed on Wednesday, January 31, 2024. Payments are due Sunday, March 10, 2024. Learn More

CGDP Cutoff Dates


Reporting Period: Q4 2023
Invoice Distribution: Wednesday, January 31, 2024
Invoice Payment Deadline: Sunday, March 10, 2024
Disputes Submission Deadline: Monday, April 1, 2024

Learn More >