Professor Mossialos’ research focus is comparative health systems and policy, addressing questions related to health reforms, financing health care, pharmaceutical policies, the impact of EU law on health care systems, cancer care and policy and incentives to develop new antibiotics.
He has advised the WHO, European Parliament, European Commission (EC), World Bank, UK Office of Fair Trading, Ministries of Health and Social Affairs in Austria, Belgium, Brazil, China, Cyprus, Finland, Greece, Ireland, Kazakhstan, Kuwait, The Netherlands, Norway, Russia, Slovenia, South Africa, Spain and Sweden, and health insurance funds in Croatia, France, Hungary and South Korea.
In 2010 he was awarded the Andrija Stampar medal by the Association of Schools of Public Health in Europe (ASPHER) and the European Public Health Association (EUPHA), for contributions to European public health. He received the 2002 and 2007 Baxter Awards from the European Health Management Association for the best publication in health policy and management in Europe and a Commended Prize in the 2002 BMA Medical Book Competition. In 2009, under his directorship, LSE Health was honoured with the biennial Queen's Anniversary Prize for Higher and Further Education for outstanding achievement and excellence.