Slide 1. Trends in Healthcare Costs and the Concentration of Medical Expenditures Slide 1. Trends in Healthcare Costs and the Concentration of Medical Expenditures. Steven Cohen, PhD, and David Meyers, MDNational Advisory CouncilJuly 13, 2012 Contents Next Slide Current as of November 2012 Internet Citation: Slide 1. Trends in Healthcare Costs and the Concentration of Medical Expenditures. November 2012. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/news/events/nac/2012-07-nac/cohenmeyers/cohenmeyerssl1.html