· Spine Neurosurgery Fellowship Director, University of Miami2015–
· Chief of Neurosurgery, University of Miami Hospital2015–
· Professor, Stanford University2012–
· Senior Scientist and Junior Research Group Leader, Johannes Gutenberg University of Mainz2007–2013
· Associate Program Director, Acute Spinal Cord Model System, Rancho Los Amigos Rehabilitation Center2006–2007
· Chief, Spine Surgery Program, Rancho Los Amigos Rehabilitation Center2006–2007
· Postdoctoral Researcher, Stanford University2005–2007
· Spine Program Director, University of Southern California2005–2007
· Assistant Professor, University of Southern California2003–2007
· Resident Supervisor, University of Southern California2002–2003
· Neurosurgery Spine Fellow, University of Miami2001–2002
· Neurosurgery Resident, LA County + University of Southern California1997–2001
· Surgical Internship, LA County + University of Southern California1996–1997
· MD, Stanford University Medical School1991–1996
· Study, UCLA School of Public Health1990–1991
· Bachelor's degree, Stanford University1988–1990
· Clinical Assistant Professor (Affiliated), Stanford University
· Professor, Stanford University
· Professor of Law, Emeritus, Stanford University
· Research, Stanford University