Healthcare Economist September 19, 2023
The answer is health plans according to a new paper by Sen, Chang and Hargraves (2023):
Using the Health Care Cost Institute’s data set of claims for one-third of the US population with employer-sponsored insurance, we found that unadjusted prices were higher in self-insured plans for most of the services we studied, with the largest differences found for endoscopies (approximately 8 percent higher in self-insured plans), colonoscopies (approximately 7...