JAMA Health Forum Editor John Ayanian, MD, MPP, and Deputy Editor Melinda Buntin, PhD, speak with Ge Bai, PhD, CPA, author of Pharmacy Benefit Managers: History, Business Practices, Economics, and Policy, about how pharmacy benefit managers (PBMs) have evolved in recent decades to play a central role in the US prescription drug market, including the benefits and policy challenges that PBMs present in this market. Related Content:

• Pharmacy Benefit Managers