Gun Violence Prevention Research Center Personnel
Meet our team and learn more about the individuals who are working to support the Gun Violence Prevention Research Center mission in becoming Oregon’s credible, objective source of data for gun violence and its solutions.
Center Faculty


Kathleen Carlson, MS, PhD
Dr. Carlson (she/her) is the Founding Director of the Center. She is a Professor of Epidemiology at the Oregon Health & Science University-Portland State University School of Public Health, and a Core Investigator with the VA Portland Health Care System’s Health Services Research Center of Innovation called “CIVIC” (Center to Improve Veteran Involvement in Care). Dr. Carlson completed her BS degree at Oregon State University, and her MS and PhD degrees at the University of Minnesota School of Public Health, focused on injury and violence epidemiology. Dr. Carlson’s research examines the spectrum of injury and violence prevention, from the epidemiology of intentional and unintentional injuries to the rehabilitation of military Veterans with combat injuries and comorbid mental health disorders. Her current research grants examine gun violence and other firearm-related injuries, opioid-related injuries, and the short- and long-term functional outcomes of Veterans’ traumatic brain injury. Dr. Carlson teaches and mentors MPH and PhD students in epidemiology and research methodology, and mentors health services research postdoctoral fellows and career development awardees at the Portland VA. She is also a certified faculty member with the OHSU Mentorship Academy. Her leadership roles with national injury prevention organizations include serving on the Board of Directors and as Treasurer for the Society for Advancement of Violence and Injury Research and as Chair-Elect for the Injury Control and Emergency Health Services section of the American Public Health Association.
Joel R. Burnett, MD, FACP
Dr. Burnett, MD, FACP (he/him) is an Assistant Professor of Medicine at Oregon Health & Science University (OHSU) School of Medicine in Portland. He completed medical school at the University of Kansas School of Medicine and completed his internal medicine residency and chief residency at OHSU before joining the OHSU Division of General Internal Medicine as a primary care physician. His clinical and policy interests lie in firearm injury prevention. As faculty at the OHSU Gun Violence Prevention Research Center, he has written testimony supporting evidence-based policies to reduce firearm injury in Oregon, and he has helped to develop and teach curriculum addressing clinical and health policy approaches to firearm injury prevention to OHSU medical students, residents, and faculty.
Khaya Clark, MS, PhD
Dr. Khaya Clark (she/her) is a sociologist with a background in health services research and implementation science. Dr. Clark is currently a Research Investigator at the VA Rehabilitation Research & Development National Center for Rehabilitative Auditory Research (NCRAR) and Affiliate Investigator at the VA Health Systems Research Center to Improve Veteran Involvement in Care (CIVIC), both based out of the VA Portland Health Care System. Dr. Clark also holds a faculty appointment as an Assistant Professor in the Department of Medical Informatics and Clinical Epidemiology at Oregon Health & Science University. In her role as a rehabilitation researcher, Dr. Clark uses implementation science, human factors frameworks, quality improvement models, and qualitative, mixed-methods approaches to understand processes that support, or impede, the implementation of evidence-based practices in VA and Department of Defense rehabilitative settings. Dr. Clark’s areas of research include the use of Veterans’ health narratives on health conditions to inform research, system improvement, and clinical services related to the provision of evidence-based practices in VA and non-VA settings. Dr. Clark’s current leadership positions include serving as a member of the Joint VA/DoD Tinnitus Working Group to develop the first, national evidence-based clinical practice guidelines for tinnitus management in VA and Department of Defense Health Systems. Dr. Clark also serves as a member of the Qualitative Research Committee for the Health Experiences Research Network.
Katherine A. Iossi, MD, MPH, FACP
Dr. Iossi (she/her) is an Associate Professor in the Department of Medicine at Oregon Health and Science University and a staff physician at the VA Portland Health Care System. Dr. Iossi earned her Medical Degree from the University of Iowa Carver College of Medicine and her Master of Public Health in Community-Oriented Primary Care at The George Washington University School of Public Health and Health Services. She completed her Internal Medicine residency at OHSU and served as a chief resident in the Department of Medicine before joining the faculty at OHSU and the staff of the Portland VA Medical Center. She is a primary care physician in the Portland VA Resident and Faculty General Medicine Clinic where she cares for Veterans as a member of an interdisciplinary medical home team. She served as the Associate Program Director for Ambulatory Medicine and Primary Care in the OHSU Internal Medicine Residency Program and continues as a Core Faculty member, teaching and mentoring residents and medical students. Her scholarly interests include primary care resident training, health equity, and teaching communication skills. Dr. Iossi serves as a Communications Coach with the OHSU Center for Ethics in Healthcare, as a member of the Governor’s Advisory Council of the Oregon Chapter of the American College of Physicians, and as a member of the Society of General Internal Medicine. She directs the Center’s Speakers’ Bureau.
Mubeen Jafri, MD, FACS, FAAP
Dr. Mubeen Jafri is the Chief of Pediatric Surgery at Oregon Health & Science University, Program Director for the Pediatric Surgery Fellowship and the Pediatric Trauma Medical Director at Randall Children’s Hospital. He joined the OHSU faculty after completing his pediatric surgery fellowship at Cincinnati Children’s Hospital in 2011. Dr. Jafri obtained his medical degree in 2002 from Eastern Virginia Medical School and completed general surgery training at the University of Cincinnati in 2009. He completed a basic science research fellowship focusing on the pathogenesis of biliary atresia at Cincinnati Children’s Medical Center during his general surgery training. His clinical interests include care of injured children, inflammatory bowel disease, minimally invasive surgery, hepatobiliary and colorectal surgery. His research focuses on pediatric traumatic injury-related outcomes, trauma coagulopathy, injury prevention, reduction of ionizing radiation exposure in pediatric imaging and the development of standardized protocols in the management of injured children. He serves as the Site Primary Investigator for the NIH-funded ENRICH-US Grant, ASPR-funded WRAP-EM Disaster Management Consortium and is a subject matter expert for the HRSA-funded Pediatric Pandemic Network.
Center Staff
Nicole Cerra, MA, MPH
Nicole (she/her) is a Senior Research Project Manager at the Center. She is an applied, community-based, public health researcher and qualitative methodologist. Since 2010, she has worked on and managed research projects with diverse populations and on a range of topics including firearm violence prevention, homelessness, peer recovery mentors, public health education campaigns, and safety net programs. Her work products have been used as advocacy documents in the Oregon legislature and to inform program improvements in a variety of settings. Nicole received her MPH from the University of Minnesota School of Public Health and her MA in Global Studies from the University of California, Santa Barbara.
Susan DeFrancesco, JD, MPH
Susan (she/her) is a Senior Research Project Manager at the Center. She has 40 years of experience as a public health researcher, practitioner, and educator with a focus on injury and violence prevention. She has extensive project coordination and implementation experience working on projects in both urban and rural environments with communities at high risk for injury. Susan’s work over the years has also focused on the development and implementation of injury prevention policies and the role of health professionals and community activists in health advocacy. Susan earned her law degree from the University of Maryland School of Law and her Master of Public Health from the Johns Hopkins Bloomberg School of Public Health.
Susan Sotka Kelly, LCSW, CADC I
Susan (she/her) is a Senior Research Assistant at the Center. She is a licensed clinical social worker and certified alcohol and drug counselor currently pursuing a Master of Public Health in Epidemiology at the OHSU-PSU School of Public Health. Her professional background includes 20 years of experience and focus on trauma-informed care in community behavioral health treatment in the Portland area. Susan has turned her focus from clinical work to research in behavioral health, health care delivery systems, and injury epidemiology. She is interested in the effectiveness of public health approaches to reducing risk of firearm injuries and associated trauma.
Rosol Mikail, MPH
Rosol (she/her) is a Senior Research Assistant at the Center. She is an early-career public health professional with a background in research and health. She received her BS in Public Health Studies: Pre-clinical Health Sciences in 2022 and her MPH in Epidemiology in 2024 from the OHSU-PSU School of Public Health. Her research interests include firearm injury prevention and trauma.
Shauna Rakshe, MS, PhD
Dr. Rakshe (she/her) is a biostatistician at the Knight Cancer Institute Biostatistics Shared Resource (BSR). She holds a PhD in chemical engineering from Stanford University. Dr. Rakshe began collaborating with the Center while earning her MS in biostatistics from the OHSU-PSU School of Public Health. Her research with the Center focuses on the use of Extreme Risk Protection Orders in Oregon. More broadly, she works on a wide variety of clinical, translational, and basic science studies.
Gina Stahla, MPH
Gina (she/her) serves as a Research Associate at the Center. She received her MPH in Epidemiology in 2023 from the OHSU-PSU School of Public Health. Before moving to Portland in 2018, she earned a BS in Health Promotion & Education from the University of Utah, and worked throughout Utah in community engagement, health education, and STI/HIV surveillance and prevention. Her current research interests include firearm injury and gun violence prevention in Portland, and across the state of Oregon.
Rebecca Teichman, BA
Rebecca (she/her) is a Senior Research Assistant at the Center. She is an early-career public health professional who received her BA in Psychology from Lewis & Clark College in Portland, OR in 2022. She has a background in practice and research related to health psychology, behavioral health, and suicide prevention. Her current research interests include public health approaches for firearm injury prevention.
Rebecca Valek, MSPH
Rebecca (she/her) is a Research Project Coordinator at the Center. She is an early-career public health professional with a background in research and policy. She received her BA in Public Health from the University of Illinois – Chicago in 2022 and her Master of Science of Public Health (MSPH) in Health Policy and Management from the Johns Hopkins Bloomberg School of Public Health in 2024. Rebecca’s research interests include the medicalization and criminalization of poverty and firearm violence prevention.
VA Affiliates
Will Baker-Robinson, MS
Will (he/him) is a statistician at the Center to Improve Veteran Involvement in Care (CIVIC) at the VA Portland Health Care System and a Center affiliate. He received his BS in Biology from the University of Portland and MS in Biostatistics from the Oregon Health and Science University – Portland State University School of Public Health. He serves as a statistician with expertise in data synthesis, probabilistic linkage, and predictive and causal modeling. Will has been working on Dr. Carlson’s team on the FASTER/AVERT projects and other research involving firearm-related injuries since 2020. His goal is to use data science and statistical techniques to improve the understanding of the causes and consequences of firearm injury in Oregon.
Daniel Claypool, MPH
Daniel Claypool (he/him) is a health services researcher at the Portland VA Center to Improve Veteran Involvement in Care (CIVIC) and a Center affiliate. He earned his BS in Forensic Science from Virginia Commonwealth University in 2013 and his MPH in Epidemiology from the OHSU-PSU School of Public Health in 2023. Daniel assists with several research projects focused on Veterans’ health including firearm injury, traumatic brain injury, and suicide prevention. Prior to graduate school, Daniel served a total of five years in the U.S. Coast Guard. During his service, he was assigned to a search and rescue unit off the Oregon Coast and to an Aids to Navigation unit in Rhode Island.
Stephanie Edmunds, MS
Stephanie Edmunds (she/her) is a health services researcher at the Portland VA Center to Improve Veteran Involvement in Care (CIVIC) and a Center affiliate. She earned her BS in Biology, specializing in Organismal Physiology/Zoology, and her MS in Biology from Portland State University. Stephanie contributes to multiple research projects related to firearm injury and suicide prevention. Her research also focuses on the health of combat Veterans, particularly concerning traumatic brain injury and blast exposure.
Tess Gilbert, MHS
Tess (she/her) is a Health Services Researcher at the Center to Improve Veteran Involvement in Care (CIVIC) at the VA Portland Health Care System and a Center affiliate. Tess manages several epidemiologic and health services research projects focused on Veterans’ health, including firearm injury, traumatic brain injury, and suicide prevention. She has extensive experience in extracting and analyzing large electronic health record datasets and works on projects related to data dissemination. Tess earned her Master of Health Science in Epidemiology from the Johns Hopkins Bloomberg School of Public Health.
Megan Lafferty, PhD
Dr. Lafferty (she/her) serves as a Qualitative Methodologist at the Portland VA Research Foundation and Center to Improve Veteran Involvement in Care (CIVIC). Trained as an anthropologist at the University of Melbourne, she has conducted mixed-methods health services research since 2017, first for the University of Michigan School of Nursing, and subsequently for various VA-funded studies. She has expertise in qualitative research, from traditional ethnographic methods to the use of video reflexive ethnography with clinicians. Dr. Lafferty supports Dr. Carlson’s VA program of research on firearm injury prevention among Veterans and works with the Center on a DIPEx project documenting Veterans’ firearm injuries.
Lauren Maxim, PhD
Dr. Maxim (she/her) is a researcher at the Center to Improve Veteran Involvement in Care (CIVIC) at the VA Portland Health Care System and a Center affiliate. She manages a multi-faceted project, funded by VA’s Office of Rural Health, to better understand the rates and context of firearm injuries among Veterans; identify and support implementation of culturally informed strategies to prevent firearm-related injuries and deaths among rural Veterans; and evaluate the effectiveness of these strategies in changing attitudes and behaviors to prevent firearm-related injuries and deaths. Prior to joining CIVIC, Dr. Maxim directed applied research and program evaluation studies focused on public health initiatives, behavioral health treatment, and educational programs. She completed her PhD at Emory University in the clinical psychology program.
Students / Fellows
Ayanna Ke'Auli'i Bell, BS
Ayanna (she/her) is a current Clinical Psychology PhD student at OHSU under the mentorship of Dr. Kathleen Carlson, Dr. Jeni Johnstone, and Dr. Chris Stauffer. She was born in Hawai’i and raised in Georgia. She earned her B.S. in Neuroscience with a minor in Artificial Intelligence at Agnes Scott College. There she was an undergraduate research assistant in numerous labs exploring novel methods to treat neurological diseases and psychiatric disorders. Her research interests include providing culturally competent care to those seeking psychiatric treatment, sociobehavioral impacts on human health, innovative initiatives for health, mindfulness and meditation, the utilization of micronutrients to treat symptoms related to psychiatric disorders, and exploring psychedelic-assisted psychotherapy.
Emma Carag
Emma Carag (she/her) is a senior at UC Santa Barbara majoring in Economics with a minor in Poverty, Inequality, and Social Justice. As a Research Assistant at the Center and the Portland VA Research Foundation, she has contributed to projects focused on reducing community violence, preventing firearm injury among rural Veterans, and improving care for Veterans with a history of traumatic brain injury. Her research interests also include promoting child and adolescent mental health and using upstream interventions to help prevent homelessness and its associated trauma. After graduation, she plans to continue her public health training as an MPH student.
Gabriella Macera, BS
Gabriella Macera (she/her) is a current fourth year MD/MPH student at OHSU. Originally from Philadelphia, PA, she earned her BS in Biological Sciences with a minor in Global Public Health from Drexel University. Gabriella plans to specialize in Emergency Medicine, which frequently serves as the first touchpoint for firearm injuries in the healthcare system. Her research interests include the emerging role of emergency medicine as primary care, and ways to equip physicians with public health frameworks to better serve their communities.
Meghana Narahari, BA, BS
Meghana Narahari (she/her) is an MD/MPH student at OHSU. Born and raised in Portland, Oregon, she earned a dual BA/BS in Neuroscience and Public Health from Tulane University in New Orleans. During her undergraduate years, she contributed to research investigating the role of the complement system in metabolic dysfunction-associated steatotic liver disease (MASLD). Meghana is considering a residency in Internal Medicine or Obstetrics & Gynecology. Her research interests include health policy evaluation, the health impacts of climate change, cost-effectiveness analyses of maternal health interventions, and gun violence prevention.
AnnaMarie S. O’Neill, Ph.D.
Dr. O’Neill (she/her) is an Associated Health Fellow at the Center to Improve Veteran Involvement in Care (CIVIC) at the Portland VA. She is formally mentored by Drs. Kathleen Carlson and Lauren Denneson and informally mentored by other wonderful researchers. Dr. O’Neill graduated from Portland State University in 2022 with a PhD in Applied Psychology. She is interested in understanding the modifiable risk factors of firearm injury and developing prevention strategies to be delivered from within the VA healthcare system. Her broader program of research has spanned a variety of topics such as examining how romantic partners shape one another’s health, evaluating the impact of supportive supervisor trainings on workers’ and their loved ones’ wellness, and determining what core competencies are needed for professionals working in sexual assault prevention. Her work is thematically unified by her interest in social determinants of health.
Adam Pennavaria, BA
Adam (he/they) is a volunteer Research Assistant with the Gun Violence Prevention Research Center. He is a first year MPH student at the OHSU-PSU School of Public Health, planning to focus on public health policy with respect to the prevention of firearm injury and death. Adam has a background in journalism, and earned his BA in Journalism from the University of Kentucky. He currently works in primary care quality management in Hood River, OR. He is interested in how different policy approaches can be utilized to reduce firearm violence in Oregon and elsewhere in the US.
Jenn Reed, PhD, MPH
Dr. Jenn Reed (she/her) is a postdoctoral scholar at the Center. She earned her doctorate in Health Systems and Policy at the OHSU-PSU School of Public Health. At PSU, she teaches Contemporary Issues in Public Health Ethics; Health and Health Systems; Health Systems Administration; Introduction to Public Health Policy; and Public Health Law, Policy, and Ethics. Dr. Reed spent eight years as a civilian working in local law enforcement, where she became interested in how the mental health of police officers affects their interactions with the communities they serve, particularly the use of force. Her research interests include policy solutions to support police officer mental health and reduce police use of force, as well as firearm safety for people living with dementia.
CeAnn Romanaggi, BS
CeAnn Romanaggi (she/her) is currently a current third year medical student at OHSU. She grew up in Portland, Oregon and earned her BS from the University of Puget Sound. After college, CeAnn worked in OHSU’s Department of Molecular Microbiology and Immunology before starting medical school in 2023. Since 2022, she has been a volunteer at the Donald E. Long Juvenile Detention Center; her interest in gun violence-related research was sparked by seeing how many young adults in detention had been affected by gun violence. She continues to volunteer at both the Donald E. Long Juvenile Detention Center and the MacLaren Youth Correctional Facility.
Julia Silver, MD, MPH, MS
Dr. Julia Silver (she/her) is a current Orthopaedic Surgery resident at OHSU. A native of Oregon, she spent twelve years in New Orleans, where she completed her MPH in Epidemiology and her MD at Tulane University. During that time, she witnessed first-hand the immense burden of firearm violence and the urgent need for collaboration between public health and clinical care.
At OHSU, her work focuses on the orthopaedic burden of firearm injuries and the ways in which surgical practice intersects with social determinants of health. She is dedicated to advancing culturally specific, research-grounded approaches to address inequities and improve healthcare outcomes, bringing a dual perspective as both a surgeon-in-training and public health scholar.
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