Bachelor, Utrecht Conservatory, Netherlands, 1993. Doctor of Medicine, Utrecht University, 1995. Doctor of Philosophy, Erasmus University, Rotterdam, Zuid-Holland, Netherlands, 2009.
Resident Erasmus MC Sophia Children's Hospital, Rotterdam, 1999—2000, development disorders team coordinator, since 1999, psychiatrist, 2000—2001, child psychiatrist, since 2001.
Chairman Dutch St. Gregory Association, Rotterdam, 2001—2008. Member of Boerhaave Committee, NVvP, LAD, The Royal Dutch Medical Association.
Son of Piet A. de Nijs and Cecile M. C. Voet.