Overtreatment is a big problem in American health care. The proliferation of unnecessary medical tests and procedures not only harms patients but costs the United States billions of dollars every year. Between 2019 and 2021, Medicare spent as much as $2.4 billion on unnecessary coronary stents alone. At some hospitals, it’s estimated that more than half of all stents are unwarranted.

For this week’s episode of The Dose podcast — the latest in our series on the affordability of health care — host Joel Bervell talks to Vikas Saini, M.D., a cardiologist and the executive director of the Lown Institute, a think tank that examines overspending and overtreatment in the health care system. Dr. Saini unpacks how health care practices are misaligned with patient needs and discusses strategies for “rightsizing” U.S. health care.