Pieter Doevendans became a cardiologist in Maastricht. In 1993-1994 he had the opportunity to work with Ken Chien at UCSD San Diego where the work on stem cells started. The work was completed in Maastricht and provided the basis for a thesis on the promoter of the atrialMLC gene. Upon return in the Netherlands he worked with Christine Mummery and Hans Clevers (Hubrecht Laboratory). In the meantime he remained active as an interventional cardiologist initially in Maastricht, but from 2002 on in Utrecht. Here he was appointed full professor in Cardiology in 2004 and head of the department 2005-2020. The focus is on Cardiac Failure, stem cells and genetics. He was funded by various national and international foundations. Thus far (2021) he published more than 800 peer reviewed papers and 12 books. He is an active member of the European Society of Cardiology. Director of the Netherlands Heart Institute from 2015.