McKinsey March 13, 2024 Gabe Isaacson, Dan Jamieson, Sonja Pedersen Green, Emily Pender, Cara Repasky The Medicare Advantage program is undergoing its biggest shifts in more than two decades. Payers can take steps now to mount a strategic, agile response as the changes unfold. This year US health insurers have to navigate strong crosscurrents from demographic shifts, regulatory changes, and member preferences. How they react now can have an impact for years to come.