John E. Niederhuber is an American oncologist who was the 13th director of the National Cancer Institute (NCI),[1] from 2006 until July 2010, succeeding Andrew von Eschenbach, who went on to become a director at biotechnology firm BioTime.[clarification needed] A nationally renowned surgeon and researcher, Dr. Niederhuber has dedicated his four-decade career to the treatment and study of cancer - as a professor, cancer center director,[2] National Cancer Advisory Board chair, external advisor to the NCI, grant reviewer, and laboratory investigator supported by NCI and the National Institutes of Health. He is now[as of?] Executive Vice President/CEO of the Inova Translational Medicine Institute and Inova Health System and co-director, Johns Hopkins Clinical Research Network.[3]