American College of Emergency Physicians disputes the findings published in JAMA Internal Medicine.
The study looked at the Medicare billing records for 12,337 ER physicians practicing in nearly 300 hospitals in 50 states in 2013.
On average, the analysis found that adult patients are charged 340% more than what Medicare pays for a range of services, and that the largest hospitals markups are more likely made to minorities and uninsured patients.
Read more in HealthLeaders Media.
Read key points and the abstract in JAMA Internal Medicine of May 30.