1998-1999 Intern in Medicine, Mount Sinai Hospital, New York, NY
1999-2002 Resident in Dermatology, Hospital of the University of Pennsylvania
2002-2003 Epidemiology Research Fellow, Hospital of the University of Pennsylvania

Faculty Appointments
2002-2003 Instructor, Department of Dermatology, University of
Pennsylvania
2003-2012 Assistant Professor of Dermatology, University of
Pennsylvania School of Medicine
2010-2012 Assistant Professor of Epidemiology in Biostatistics and
Epidemiology, University of Pennsylvania School of Medicine
(Secondary)
2012-2016 Associate Professor of Dermatology, University of
Pennsylvania School of Medicine
2012-2016 Associate Professor of Epidemiology in Biostatistics and
Epidemiology, University of Pennsylvania School of Medicine
(Secondary)
2016-2021 Professor of Dermatology, University of Pennsylvania School
of Medicine
2016-present Professor of Epidemiology in Biostatistics and Epidemiology,
University of Pennsylvania School of Medicine (Secondary)
2021-present James J. Leyden, M.D. Endowed Professor in Clinical Investigation, University of Pennsylvania School of Medicine

Hospital and/or Administrative Appointments
2002-2006 Director Consultative Dermatology, Presbyterian Medical
Center
2003-present Medical Director, Clinical Studies Unit, Department of
Dermatology, Hospital of the University of Pennsylvania
2003-2004 Director Consultative Dermatology, Pennsylvania Hospital
2021-present Endowed Professorship, James J. Leyden, M.D. Endowed Professorship in Clinical Investigation

Other Appointments
2002-2003 Faculty Fellow, Center for Clinical Epidemiology and
Biostatistics, University of Pennsylvania
2004-2010 Associate Scholar, Center for Clinical Epidemiology and
Biostatistics, University of Pennsylvania
2008-present Associate Fellow, Center for Public Health Initiatives,
University of Pennsylvania
2010-present Senior Scholar, Center for Clinical Epidemiology and
Biostatistics, University of Pennsylvania
2013-present Director, Patient Centered Outcomes Research Track
2015-present Medical Director, Psoriasis and Phototherapy Treatment
Center, Department of Dermatology, University of Pennsylvania