Can financial incentives, public health messages and other behavioral nudges -approaches deployed by state and local governments, employers, and health systems - increase SARS-CoV-2 vaccination rates among the vaccine hesitant in the US? In mid-2021, we randomly assigned unvaccinated members of...

We investigate the role of physician agency and competition in determining health care supply and patient outcomes. A 2005 change to Medicare fees had a large, negative impact on physician profit margins for providing chemotherapy treatment. In response to these cuts, physicians increased their...