Professor Grennan is an expert in economic analysis and policy specializing in the application of empirical industrial organization models to public policy and competitive strategy issues in health care markets. Additional topics he has researched include the interaction between negotiated prices and competition in business-to-business markets; innovation, regulation, and the adoption of new technologies; the ways in which regulatory and competitive forces shape innovation and market outcomes; and how the information available to market participants affects policy and strategy decisions. His work has been funded by the National Science Foundation and published in journals such as American Economic Review, Health Affairs, the Journal of Political Economy, The RAND Journal of Economics, and Management Science. Prior to joining the Haas School, Professor Grennan was on the faculties of The Wharton School of the University of Pennsylvania and the University of Toronto. He is a member of the Academy of Management, the American Economic Association, and The Econometric Society; a faculty research fellow at the National Bureau of Economic Research; and a senior fellow at the Leonard Davis Institute of Health Economics.