David Blaine Ridley

David Blaine Ridley

Professor of the Practice of Economics

External Address: 
100 Fuqua Drive, Durham, NC 27708-0120
Internal Office Address: 
Duke Box 90120, 100 Fuqua Drive, Durham, NC 27708-0120
(919) 660-3784

David Ridley is the Dr. and Mrs. Frank A. Riddick Professor of the Practice of Business Administration. He is also the Faculty Director of Duke's Health Sector Management program. In his research, David examines innovation and pricing, especially in health care. He was the lead author of the paper proposing the priority review voucher program to encourage development of drugs for neglected diseases. The voucher program became law in the U.S. in 2007 and and created more than a billion dollars in value. David has published in economics journals (Journal of Public Economics), medical journals (Journal of the American Medical Association), and scientific journals (Nature Reviews Drug Discovery). David teaches in the daytime MBA and executive MBA programs. He received a PhD in economics from Duke University in 2001.


  • Ph.D., Duke University 2001
  • M.A., Duke University 1995
  • B.A., University of Missouri at Columbia 1993

Ridley, David B., Xiaoshu Bei, and Eli B. Liebman. “No Shot: US Vaccine Prices And Shortages..” Health Affairs (Project Hope) 35, no. 2 (February 2016): 235–41. https://doi.org/10.1377/hlthaff.2015.0420. Full Text

Regnier, Stephane A., and David B. Ridley. “Market watch: Forecasting market share in the US pharmaceutical market..” Nature Reviews. Drug Discovery 14, no. 9 (September 2015): 594–95. https://doi.org/10.1038/nrd4697. Full Text

Regnier, Stephane Alexandre, and David B. Ridley. “Forecasting Market Share in the US Pharmaceutical Market.” Nature Reviews Drug Discovery. 2015. 14, no. 9 (July 31, 2015).

Arcidiacono, P., P. B. Ellickson, P. Landry, and D. B. Ridley. “Pharmaceutical followers.” International Journal of Industrial Organization 31, no. 5 (November 15, 2013): 538–53. https://doi.org/10.1016/j.ijindorg.2013.10.005. Full Text

Arcidiacono, Peter, Paul B. Ellickson, Peter Landry, and David B. Ridley. “Pharmaceutical Followers,” October 2013.

Gans, J. S., and D. B. Ridley. “Innovation incentives under transferable fast-track regulatory review.” Journal of Industrial Economics 61, no. 3 (September 1, 2013): 789–816. https://doi.org/10.1111/joie.12026. Full Text

Ridley, D. B. “Payments, promotion, and the purple pill.” Health Economics (United Kingdom), 2013. https://doi.org/10.1002/hec.3005. Full Text

Ridley, David B., and Alfonso Calles Sánchez. “Introduction of European priority review vouchers to encourage development of new medicines for neglected diseases..” Lancet 376, no. 9744 (September 11, 2010): 922–27. https://doi.org/10.1016/S0140-6736(10)60669-1. Full Text

Picone, G. A., D. B. Ridley, and P. A. Zandbergen. “Distance decreases with differentiation: Strategic agglomeration by retailers.” International Journal of Industrial Organization 27, no. 3 (May 1, 2009): 463–73. https://doi.org/10.1016/j.ijindorg.2008.11.007. Full Text

Moe, Jeffrey, Henry Grabowski, and David Ridley. “FDA review vouchers..” The New England Journal of Medicine 360, no. 8 (February 2009). https://doi.org/10.1056/nejmc086492. Full Text