Douglas Wiebe

Douglas Wiebe, PhD

Professor |
Center for Clinical Epidemiology & Biostatistics | Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania

My interests include environmental risk factors for injury, methodological challenges of activity pattern measurement, the impact of daily routines on health-related behavior, and the influence of geography on health and systems of healthcare. I received my PhD from the School of Social Ecology at the University of California at Irvine and completed postdoctoral studies in injury epidemiology at the School of Public Health at the University of California at Los Angeles. I teach a course on measurement principles (EPID 542) and a course on geography and health (PUBH 517/EPID 518). I received the Teaching Award in the Masters of Science in Clinical Epidemiology Program in 2008/09, and in the Perelman School of Medicine I received the Dean’s Award for Excellence in Basic Science Teaching in 2012.

I have secondary appointments in the Department of Emergency Medicine and in the Division of Traumatology and Surgical Critical Care in the Department of Surgery in the Perelman School of Medicine. From 2009 to 2014 I held an appointment of Visiting Scholar in the Department of Geography at the University of Cambridge, England. My leadership positions include being Director of the CDC-funded Penn Injury Science Center ( and directing a training program funded by the Fogarty International Center at the NIH to build injury epidemiology capacity in Botswana. Also I am a Past President of the Society for Advancement of Violence and Injury Research (SAVIR).


Christopher Morrison

Christopher Morrison, PhD MPH

Post-doctoral fellow |
I came to the Center for Clinical Epidemiology and Biostatistics after four years at the Prevention Research Center in Oakland, California. My primary research interest is geospatial relationships between alcohol markets and harms. Our study of ridesharing and motor vehicle crashes was published in the American Journal of Epidemiology. Our study of assaults on days of campaign rallies during the 2016 US Presidential election was published in Epidemiology. I recently accepted a faculty position in Epidemiology in the School of Public Health at Columbia University.

Alexis Zebrowski

Alexis Zebrowski

Fourth year PhD student |
I am a fourth year doctoral student in Epidemiology. I am developing a new measure for the intensity of trauma care and investigating how intensity of care varies by patient characteristics, across hospitals, and relates to outcomes. I will be presenting this work at the Academy Health annual meeting in Seattle, WA in June 2019. I also coordinate subject recruitment activities for the Space-Time Study of School Safety.

Kalen Flynn

Kalen Flynn

Third year PhD student |
I am a third year doctoral student in the School of Social Policy and Practice. I am analyzing data from the Space-Time Adolescent Risk Study to investigate how adolescents’ perceptions of safety varied as a function of the features of their immediate surroundings during daily activities. I am also developing a mixed-methods protocol that uses ambulatory monitoring of participants to measure reactions to stressors encountered in the social and built environment. I recently accepted a faculty position at the University of Illinois, Chicago.

Darcy Ellis

Darcy Ellis, MPH

Second year PhD student |
I received my MPH in Public Health from Columbia University and I am in the second year of the doctoral program in Epidemiology at U Penn. As part of the graduate student rotation series, I am analyzing data from the Space-Time Adolescent Risk Study to estimate the duration of induction periods for activities and locations as they relate to the likelihood of being assaulted during daily activities.


Bernadette D'Alonzo

Bernadette D’Alonzo, MPH

Research Coordinator |
I completed my MPH at Penn in 2017 and have worked for several years as a research coordinator. I currently manage multiple federally funded studies centered around issues of geography and health. Much of my work involves the collection and integration of data that are derived from multiple sources at different temporal and spatial scales. Also I coordinate research activities and I lead analyses for the epidemiology study of the Ivy League/Big Ten Concussion Consortium. We recently published a description of this study at Injury Prevention.

Former Trainees

Derek Dong

Beidi (Derek) Dong, PhD

Post-doctoral fellow |
Group member 2015-2017.

Eshan Kumar

Eshan Kumar

LDI SUMR Scholar |
Group member summer 2017.

Monika Młodzik

Monika Młodzik

Visiting PhD student from Poznan University of Life Sciences, Poland |
Group member summer 2017.

Atu Agawu

Atu Agawu, MD, MPH

MD/MPH student |
Group member 2011-2016.

Alison Culyba

Alison Cuylba, MD, MPH

PhD student |
Adolescent Medicine Fellow
Group member 2009-2017.

Anne Grossestreuer

Anne Grossestreuer, PhD

PhD student |
Group member 2012-2016.

Whitney Cabey

Whitney Cabey, MD MSHP

Fellow | Robert Wood Johnson Clinical Scholars Program |
Group member 2013-2017.

Laura Johnson Faherty

Laura Johnson Faherty, MD, MPH

Fellow | Robert Wood Johnson Clinical Scholars Program |
Group member 2011-2015.

Monica He

Monica He

PhD student |
Group member 2010-2011.