Our Team
Director of VPRP and CA FVRC
Professor, Emergency Medicine
Inaugural Susan P. Baker-Stephen P. Teret Chair in Violence Prevention
Garen Wintemute’s early work helped create the public health approach to violence prevention. His current research evaluates some of California’s innovative firearm violence prevention policies and assesses the broader social and political effects of firearm violence.
Wintemute is a practicing emergency medicine physician.
PubMed, Google Scholar
Professor, Psychiatry and Emergency Medicine
Associate Director, VPRP and CA FVRC
Director, BulletPoints Project
Amy Barnhorst is an emergency and inpatient psychiatrist whose experience doing violence and suicide risk assessments led to her interest in firearm injury prevention. Drawing on her previous career as an educator, she is active in medical education and works with both state and federal legislators to craft evidence-based firearms and mental health laws.
Barnhorst is a nationally recognized expert on these topics and her work has been featured in the New York Times, Psychology Today, and other media outlets.
Amanda Aubel, M.P.H.Research Data Analyst
Amanda Aubel studies the scope and impacts of exposure to violence and innovative prevention strategies using both quantitative and qualitative methods. She helps design, implement, and analyze an ongoing statewide survey on firearm ownership in California. She also supports the development and evaluation of the BulletPoints Project, which teaches healthcare providers how to reduce the risk of firearm injuries among their patients.
Aubel is trained in public health with an emphasis on the social determinants of health, health equity, and program evaluation.
Angela Bayer, Ph.D.Director of Engagement and Impact
Angela Bayer designs, implements, and evaluates educational materials and projects for firearm injury prevention. She manages the BulletPoints Project, which trains healthcare providers how to reduce the risk of firearm injuries in their patients, and leads a project to engage firearm owners about their firearm injury prevention needs and collaboratively develop prevention strategies.
Bayer has two decades of experience implementing public health research, evaluation, and outreach projects, including extensive collaboration with community members and other stakeholders, and translating project results to impact changes in programs and policies.
Assistant Professor, Emergency Medicine
Shani Buggs is a health and public policy scholar with expertise engaging federal, state, and local officials, agency leaders, and organizations on comprehensive and community-driven violence intervention and prevention efforts. She uses qualitative, quantitative, and mixed-methods approaches to examine state-level firearm policies and local-level violence reduction initiatives.
In her research, Buggs strives to consistently center the experiences of individuals most impacted by violence and interrogate structural determinants of health to advance equity, safety, and well-being. In 2021, she was named the inaugural California Wellness Foundation Fellow in recognition of her commitment to high-quality and community-centered firearm violence research.
Vicka Chaplin, M.A., M.P.H.Director of Education and Communication
Vicka Chaplin bridges research with practice and the public by making research findings accessible, actionable, and meaningful for people interested in preventing violence. She leads VPRP's public education initiative.
Chaplin has over a decade of violence prevention experience and has collaborated with academics and advocates nationwide to apply research in developing and implementing firearm injury prevention policies and other interventions.
Assistant Adjunct Professor, Emergency Medicine
Amanda Charbonneau is a social scientist using a range of quantitative methods to explore questions at the nexus of policy, psychology, and law.
Charbonneau’s research includes work on policies and practitioner decision-making in the criminal-legal and health systems. Charbonneau is also an Associate Policy Researcher at the RAND Corporation.
Andrew Crawford, Ph.D.Research Data Analyst
Andrew Crawford is a social psychologist and currently studies the intersection of firearm violence with political and personal beliefs and is also involved with a project on mass shooters in California.
Crawford has a special interest in using structural equation modeling techniques to understand risk factors associated with substance use and firearm violence in the context of prevention research.
William DeMuri, M.A. Communications Specialist
William DeMuri supports VPRP as a member of the Education and Engagement Team. He is responsible for the development of general communication strategy, as well as the dissemination of materials as they relate to VPRP's core knowledge and research.
DeMuri's background and interests are rooted in communication studies, marketing, research, and writing.
Alexandra Dent, M.P.H. Research Data Analyst
Alexandra Dent investigates the extent and ramifications of firearm violence, employing a blend of quantitative and qualitative methodologies. She is interested in understanding and addressing exposures to gun violence as it pertains to youth and adolescents, as well as tackling the social institutions and structures that sustain health disparities and inequities.
Dent’s research backgrounds focuses on health disparities and inequities, primarily focused on maternal and child health and people of color communities to improve health outcomes, safety, and well-being.
Hilary Gonzales, M.P.H.Research Administration Analyst
Hilary Gonzales provides key research support within a complex and growing portfolio of violence prevention-related research studies including contracts and grants accounting, data acquisition, institutional review board (IRB) administration, and research compliance.
In her work with the BulletPoints Project, Gonzales creates and disseminates public education materials on firearm injury research, with a special emphasis on curricula to train clinicians in firearm injury prevention and outreach efforts with firearm owners.
Stephanie Ha, B.S.Project Policy Analyst
Stephanie Ha creates and disseminates educational resources to make research more accessible, meaningful, and actionable to prevent violence. Her interests focus on understanding and addressing the contextual factors of violence to create safer communities for all.
Ha is currently pursuing a Master of Science in Epidemiology at the University of California, Los Angeles.
Austin Henderson, Ph.D.Research Data Analyst
Austin Henderson is a health economist with experience conducting research on diverse topics including epidemiology, nutrition, and decision-making, particularly in Indigenous communities. At VPRP, he works on identifying the causal relationships between legislation and firearm violence. Henderson is particularly interested in the social determinants of health and how directly changing those determinants can improve health outcomes.
Sumeet Hothi, M.B.A.Financial Analyst
Sumeet Hothi supports VPRP’s research teams’ studies by handling various financial and personnel transactions. Her professional expertise and interests lie in areas of payroll, budget, procurement, and the administration of grants.
Hothi is a current MBA candidate, focusing her studies on healthcare financial management and data analytics.
Asia Ivey, Ph.D.
Pamela A. Keach, M.S.
Alex Kwong, B.A.
Julia Lund, M.P.H.
Chris McCort, M.S.
Paul Reeping, Ph.D.
Sonia Robinson, Ph.D., M.P.H.
Julia Schleimer, M.P.H.
Aaron Shev, Ph.D.
Colette Smirniotis, Ph.D.
Liz Tomsich, Ph.D.
Brad Velasquez, M.S.
Brad Velasquez is a statistician providing statistical support on a variety of research projects. He is particularly interested in the grounding of statistical methodology, machine learning, and natural language processing techniques.
Velasquez studied mathematics, philosophy, and statistics, with an emphasis on statistical modeling, causal inference, and data analysis.
Mona Wright, M.P.H.
Asia Ivey, Ph.D.Research Data Analyst
Asia Ivey is a sociologist with expertise in qualitative and quantitative research methods. Her work is centered on developing and advancing community-driven frameworks that confront and mitigate the structural determinants of violence. Ivey's research spans community violence intervention and prevention, educational equity, and racialized organizational policy, focusing on how these domains intersect and impact public health outcomes. Through her work, she seeks to influence and shape public health policy, advocating for systemic change that addresses the root causes of violence and inequity.
Associate Professor, Emergency Medicine
Rose Kagawa uses epidemiologic and causal inference methods to identify opportunities for violence prevention and to evaluate social and firearm policies. Her research on violence seeks to identify the ways in which the social determinants of health and violence, such as poverty, education, and neighborhood environments, can be modified to reduce risk of violence perpetration and victimization.
Kagawa’s topics of study include universal background check policies, neighborhood-level resource allocation and the community safety environment, poverty reduction programs, homelessness, and the remediation of vacant and abandoned buildings.
Pamela A. Keach, M.S.Academic Program Manager
Pamela Keach has been VPRP’s lead administrator since 2014, managing all aspects of research, including proposal submission, IRB, and the administration of grants. She has been integral to VPRPs growth, drawing on her formidable organizational skills and institutional knowledge to actuate our work.
Keach is a recipient of the 2013 Arthritis Foundation’s Marilyn Magaram Award for Public Health Leadership.
Associate Professor, Emergency Medicine
Nicole Kravitz-Wirtz is a population health sociologist specializing in mixed-methods research on the social determinants of health and health equity. She is particularly interested in understanding and addressing the socioeconomic and policy forces and systems of power and privilege that create and concentrate inequitable community conditions of high risk factors associated with violence/illness and low protective factors associated with safety/well-being.
Kravitz-Wirtz’s core areas of study include: neighborhood-health effects and effect modification over the life course; causes, consequences, and prevention of structural and community violence exposure, especially among youth and young adults; firearm ownership-related motivations, behaviors, and injury prevention policies; and hospital- and community-based violence intervention strategies.
Alex Kwong, B.A.Research Data Analyst
Alex Kwong provides support to various research projects, analyzing both quantitative and qualitative data to evaluate the effectiveness of current firearm policies. He is interested in the intersection of urban planning and public health regarding how the structure of cities affects population health outcomes.
Kwong is currently pursuing a concurrent Master of Public Health in Epidemiology/Biostatistics and Master of City Planning at the University of California, Berkeley.
Associate Professor, Emergency Medicine
Hannah Laqueur is a quantitative social scientist specializing in data-driven analyses of crime and violence, with a central focus on firearm violence. Her research includes work on substance use and drug policy, crime policy, and decision-making and risk assessment in the criminal justice system.
Laqueur employs a range of econometric, statistical and machine learning techniques for inference and prediction.
Julia Lund, M.P.H.Research Data Analyst
Julia Lund provides qualitative and quantitative support to various interdisciplinary research projects spanning survey development, data analysis, and policy and program evaluation. She is interested in mixed methods and community-driven approaches to understanding and addressing violence, with particular emphasis on turning the lens away from individual behaviors and onto the structures and systems that perpetuate inequities.
Lund studied epidemiology, focusing on social determinants of health and wellbeing.
Chris McCort, M.S.Research Data Analyst
Chris McCort is a statistician focusing on statistical computing and research methods. He supports a variety of research projects with data acquisition, preparation, innovative analysis, and model interpretation.
McCort’s educational focus on statistical theory undergirds a dedication to rigorous methodology and interpretation.
Professor, Emergency Medicine
Behavioral Health Director for the Emergency Department at UC Davis
Aimee Moulin is an emergency medicine physician with a dual appointment in the department of psychiatry. She is an expert on opiate use disorder, mental illness, health policy, and suicide.
Moulin is director and co-principal investigator of CA Bridge, a program transforming addition treatment by providing, technical assistance, and coaching to hospitals, thus helping them take on a critical role in solving the overdose crisis.
Assistant Professor, Emergency Medicine
Veronica Pear is a social epidemiologist studying modifiable upstream causes of firearm violence that can be leveraged to effectuate widespread, enduring reductions in violence-related harms. These include policies, social/structural conditions, and features of the local environment. She applies a range of methods to generate robust, policy-relevant research, from causal inference to mixed methods.
Pear’s work on California’s gun violence restraining order law (known colloquially as a “red flag” law) has influenced the state and national conversation on this policy.
Paul Reeping, Ph.D. Postdoctoral Scholar 2022-2024
Paul Reeping is an injury epidemiologist whose experience as a former high school teacher helps to inform his current research and interests. His work is primarily focused on the causes of mass, active, and school shootings, and the policies or laws that could prevent these tragedies.
Reeping is particularly interested in the utility of study design, and his dissertation was the first ever evaluation of the effectiveness of gun-free zones on firearm related crime and active shootings.
Sonia Robinson, Ph.D., M.P.H.Research Data Analyst
Sonia Robinson is an epidemiologist who currently studies predictors of firearm suicide, crime, and political violence. She is particularly interested in understanding structures and systems which lead to the development of violent behaviors among children and adolescents.
Prior to joining VPRP, Robinson’s research focused on child development and the developmental origins of health and disease.
Julia Schleimer, M.P.H.Research Data Analyst
Julia Schleimer is a social epidemiologist who studies social conditions and policies that affect and can be modified to reduce risk of violence. She has particular interest in understanding risk and resilience across the life course, including among children and adolescents, addressing systems and structures that lead to inequities in violence, and applying research methods for causal inference.
Schleimer’s research has focused on multiple forms of violence, including interpersonal and self-directed harm.
Aaron Shev, Ph.D.Senior Statistician and Research Data Analyst
Aaron Shev is a statistician studying applications of statistical learning and predictive modeling to answer questions related to violence prevention and substance use with interests in firearm violence and opioid use.
Quasi-experimental and causal methods for policy evaluation, such as the Synthetic Control Method, are a current focus for Shev’s research aimed at developing analytic approaches for policy driven research for challenging public health problems.
Colette Smirniotis, Ph.D.Research Data Analyst
Colette Smirniotis is a statistician specializing in spatial modeling and machine learning. Building upon her background in environmental modeling, she developed a niche for herself using statistical methods to explore and illustrate problems and solutions for policy and social change.
Smirniotis’ work at VPRP has included topics such as predicting firearm suicide and modeling the association of housing demolition and crime.
Liz Tomsich, Ph.D.Research Data Analyst
Liz Tomsich conducts research on interpersonal violence, with a special focus on social context and policy. She brings an interdisciplinary approach to her work, as she studied social psychology and public affairs and taught and conducted research in criminology prior to joining VPRP.
Tomsich’s research interests include the social determinants of interpersonal violence, with a particular focus on intimate partner violence and child maltreatment.
Brad Velasquez, M.S.Research Data Analyst
Mona Wright, M.P.H.Research Associate
Mona Wright is an epidemiologist who has worked for over 3 decades in violence prevention with an emphasis on studies involving firearms. Her work has included such topics as gun purchases, suicides, and stray bullet shootings.
Wright has developed an expertise in criminal history data and its interpretation.