Doctor of Medicine, University Amsterdam, 1987.
Member vestibular department Academy Medical Center, Amsterdam. Member research and development department Netherlands Aerospace Medical Center, Soesterberg, 1989—1990. Project scientist European Space Agency, since 1991, project scientist for Anthrorack, 1993, coordinator life science experiments for parabolic flight campaigns, member European Astronaut Corps, European Astronaut Center Cologne, Germany, since 1999.
Researcher microgravity payloads division European Space Technology Center, Noordwijk, Netherlands. Officer Royal Netherlands Airforce Medical Corps, 1987-1988.
Member of Dutch Association for Spaceflight, Dutch Aviation Medicine Society, Aerospace Medical Association.
Children: Robin, Megan.