· Distinguished Professor And Chair, the University of California, Irvine (Current)2024–
· Distinguished Professor, Division Of Cardiology, Department Of Medicine, UCI School Of Medicine, UCI School of Medicine2024–
· Adjunct Professor, Harvard T.H. Chan School of Public Health2016–
· Professor, Brown University2013–2024
· Adjunct Professor (ob Gyn And Medicine), UCLA2013–2016
· Adjunct Professor, Harvard School of Public Health2005–2008
· Professor, UCLA2005–2013
· Assistant, Associate Professor Of Epidemiology, Harvard School of Public Health2001–2005
· Assistant Associate Professor Of Medicine, Harvard Medical School2000–2006
· Epidemiologist, Brigham and Women's Hospital1998–2005
· Instructor In Medicine, Harvard Medical School1998–2000
· Medical Epidemiologist, Centers for Disease Control and Prevention1991–1995