Laurence C. Baker, PhD

Holding other factors constant, the authors find that older providers prescribe significantly more opioids, with the gap between older and younger providers increasing from 2010 to 2015.

Physician practices intending to join Medicare accountable care organizations (ACOs) in 2012 had greater capabilities in health information technology, care management processes, and quality improvement methods than those not intending to join, but they still were far from using all recommended behaviors to manage risk.

Premiums in federally facilitated Affordable Care Act Health Insurance Marketplaces are higher in geographic areas with more concentrated hospitals and physician practices and fewer insurers.

The weak correlation between Medicare and commercial insurance spending is due to negative correlations between each sector's price and the other sector's volume.