US SB3729

MedPAC must submit two reports to Congress examining agreements between pharmacy benefit managers (PBMs) and Medicare Part D prescription drug plans and MA-PD plans

Initial report due by March 15 of the year that is 2 years after the Secretary makes relevant data available to MedPAC

Initial report must include trends and patterns in PBM agreements, analysis of effects on enrollee out-of-pocket spending and pharmacy reimbursement rates, and any recommendations

Final report due 2 years after the initial report, describing changes over time in PBM agreement practices and additional recommendations

Bipartisan bill introduced January 29, 2026 by Senators Warner (D-VA), Tillis (R-NC), Cortez Masto (D-NV), and Marshall (R-KS); referred to Senate Finance Committee