Europe | Society of Jesus | Royal Society | National Geographic Society | Eastern Europe | American Cancer Society | Central Europe | Council of Europe | Royal Television Society | Organization for Security and Co-operation in Europe | American Physical Society | Western Europe | American Chemical Society | International Society for Krishna Consciousness | American Society of Civil Engineers | Royal Society of Canada | Royal Geographical Society | American Philosophical Society | Theosophical Society | Royal Society of Edinburgh | Society of Antiquaries of London | United Nations Economic Commission for Europe | Society of the Cincinnati | Society for the Prevention of Cruelty to Animals | Justice Society of America | Europe 1 | American Mathematical Society | Royal Aeronautical Society | National Honor Society | Black Label Society |
He is a member of the Governing Council of the College of Medicine and from 2010-2016 is Vice President and President of the Phytochemical Society of Europe.