The Wennberg International Collaborative (WIC) was founded in 2010 by Dr. David Goodman of The Dartmouth Institute for Health Policy & Clinical Practice (U.S.) and Professor R. Gwyn Bevan of the London School of Economics and Political Science (U.K.). The inaugural meeting was held at the London School of Economics and Political Science in 2010.

The goal of the Collaborative is to accelerate research into the causes and consequences of unwarranted health care variation across regions and providers. The WIC was organized in response to the complex and often controversial nature of this research that has led to slow progress in many countries. The Collaborative seeks to reduce barriers in the field through sponsoring research and policy meetings, facilitating collaboration amongst members, advocating for health care data availability, and serving as a clearinghouse for research and policy findings. The primary focus of the WIC is variation in health system performance within countries, although some members also examine variation across countries.