He is a research associate at the Centre for Economic Performance (CEP) and CESifo network research fellow. He has been research fellow at Harvard University and visiting fellow at Boston College (CRR), Oxford University (IA) and the University of Munich (CES). His recent books include Federalism and decentralization in European health and social care (with Scott Greer, Palgrave Macmillan, Basingstoke 2012) and The LSE companion to health policy (with Alistair McGuire, Edward Elgar, Cheltenham 2012).