· Senior Research Scientist, Stanford University2009–2012
· PhD Student, University of Pennsylvania1991–1997
· PhD Student, Fox Chase Cancer Center1990–1997
· PhD Student, Stanford University
· Postdoctorate in Developmental Neurobiology, Stanford University
· Sr Res Scientist-Physical, Rad/Canary Center at Stanford for Cancer Early Detection, Stanford University
· Deputy Director, Canary Center for Early Detection, Stanford University School of Medicine