Research Activities
Sam has conducted research in three areas: the measurement of market power and efficiency in hospital and physician markets; the effect of organized labor on health care production; and estimation of the marginal returns to health care spending. Specific research projects include: defining geographic markets and assessing market power for hospitals and physicians; measuring the impact of organized labor in the hospital industry on patient outcomes; measuring the marginal returns to hospital spending and treatment intensity, and the effects of public insurance expansions on educational attainment.
Publications
​
"Hospital Treatment and Patient Outcomes: Evidence from Capacity Constraints." Journal of Public Economics 175, 2019, pp. 94-118.
​
​Book review of “Measuring and Modeling Health Care Costs,” Edited by Ana Aizcorbe, Colin Baker, Ernst R. Berndt, and David M. Cutler. Journal of Economic Literature 57, no. 2, 2019, pp. 436-439.
​
“Antitrust and ACOs: Observations for the Physician Market,” with Daniel Ludwinski and William D. White. Medical Care Research and Review 74, no. 1, 2017, pp. 97-108.
​
“The Effect of Child Health Insurance Access on Schooling: Evidence from Public Insurance Expansions,” with Sarah Cohodes, Michael Lovenheim and Daniel Grossman. Journal of Human Resources 51, no. 3 2016, pp. 727-759.
​
“Analysis of Hospital Production: An Output Index Approach,” with Martin S. Gaynor and William B. Vogt. Journal of Applied Econometrics, 30(3), April/May, 2015, pp. 398-421.
​
“Market Power and Provider Consolidation in Physician Markets,” with William D. White and Sean M. Lyons. International Journal of Health Economics and Management, 15(1), March 2015, pp. 99-126.
​
“Measuring Returns to Hospital Care: Evidence from Ambulance Referral Patterns,” with Joseph Doyle, John Graves and Jonathan Gruber. Journal of Political Economy, 123(1), February 2015, pp. 170-214.
​
"Commentary: Patient Protection and Affordable Care Act and Health Outcomes." In A.J. Reynolds & A.J. Rolnick (Eds.) Health and Education in Early Childhood: Predictors, Interventions, and Policies, Cambridge, UK: Cambridge University Press; 2015, pp. 317-323.
​
“Nurses' Unions," In: Anthony J. Culyer (ed.), Encyclopedia of Health Economics, Vol. 2. San Diego: Elsevier; 2014, pp. 375-382.
​
“A Structural Approach to Market Definition with an Application to the Hospital Industry,” with Martin S. Gaynor and William B. Vogt. Journal of Industrial Economics, 61(2), June 2013, pp. 243-289.
​
“Provider Concentration in Markets for Physician Services for Patients with Traditional Medicare,” with Sean M. Lyons and William D. White. Health Management, Policy and Innovation, 1(1), October 2012, pp. 3-18.
​
“Do Strikes Kill? Evidence from New York State,” with Jonathan Gruber, American Economic Journal: Economic Policy, 4(1), February 2012, pp. 127–57.
​
“Beta-blocker Compliance, Mortality and Re-infarction: Validation of Clinical Trial Association Using Insurer Claims Data,” with William B. Vogt, Patricia Gladowski, Andrea DeVries, Gary Levin, Christopher Antonucci, and John Fong. American Journal of Medical Quality, 24(6), November/December 2009, pp. 512-19.
​