Talk to the Veterans Crisis Line now
An official website of the United States government
Salomeh Keyhani, MD, MPH
3DI Director
Professor of Medicine, UCSF
Primary Care Provider and Investigator, SFVA Health Care System
Dr. Keyhani has developed a research program focused on using VA and Medicare data for clinical outcomes and health services research. Her work is currently focused on understanding the health effects of cannabis use, reasons for use, public perceptions towards cannabis use and gaps in care related to assessing high risk cannabis use among Veterans.
Carolyn Gibson, PhD, MPH
3DI Associate Director
Associate Professor, Psychiatry and Behavioral Sciences, UCSF
Psychologist Clinician Investigator, SFVA Health Care System
Dr. Gibson is a clinical psychologist with research focused on women Veterans’ health and health care, mental health in the menopause transition, the impact of interpersonal trauma and military exposures on menopause- and aging-related health, medical use of cannabis among midlife and older women, and complementary and integrative health approaches to improving health for women across the lifespan.
Francesca Nicosia, PhD, MA
3DI Veteran Engagement Core Lead
Associate Professor, Institute for Health and Aging, UCSF
Health Systems Specialist, SFVA Health Care System
National Integrative Health Coordinating Center Champion, Office of Patient Centered Care & Cultural Transformation, VHA, US Department of VA
Dr. Nicosia is a medical anthropologist and certified yoga therapist with a program of research focused on improving pain, function, and quality of life outcomes for older adults, women, and Veterans through nonpharmacologic and complementary and integrative health interventions and care models.
Katherine Hoggatt, PhD, MPH
3DI Quantitative Core Lead
Professor of Medicine, University of California, San Francisco<
Research Health Scientist, Co-lead Research Data Core, SFVA Health Care System
Dr. Hoggatt is an epidemiologist with research focused on substance use and substance use disorders. In her work, she aims to use health data analytics to drive health system improvement, ensure health equity, and improve physical and mental health at the individual and population levels.
Natalie Purcell, PhD, MPA
3DI Qualitative Lead
Associate Professor of Social Behavioral Sciences, UCSF
Whole Health Program Director, SFVA Health Care System
Dr. Purcell is a sociologist focused on understanding the impact of violence and combat trauma in the lives of US military veterans, identifying and evaluating care interventions to address violence-related trauma and pain among veterans, and identifying ways to reduce violence against healthcare workers, and transformation of the institutional culture to promote organizational health and patient centered care.
Amy Byers, PhD, MPH
Co-Lead, 3DI Mentoring and Career Development Core Co-Lead
Research Career Scientist, SFVA Health Care System
Professor of Psychiatry and Behavioral Sciences, and Medicine, Division of Geriatrics, University of California, San Francisco
Dr. Byers is an epidemiologist with research focused on the epidemiology of late-life mental health and employs advanced epidemiological and biostatistical techniques to determine the incidence, prevalence, risk factors, and outcomes of late-life mental health disorders with the objective of reducing the burden of these disorders by informing long-term clinical care.
Beth E. Cohen, MD, MAS
Co-Lead, 3DI Mentoring and Career Development Core Co-Lead
Co-Chair, BE-Well Network
Professor of Medicine, University of California, San Francisco
Primary Care Provider and Clinical Investigator, SFVA Health Care System
Dr. Cohen is an internist and clinical investigator whose research focuses on health outcomes in patients with posttraumatic stress disorder. She is Principal Investigator of the Mind Your Heart Study, a prospective cohort study designed to examine the effects of posttraumatic stress disorder on cardiovascular health.
Alison Rustagi, MD, PhD
Co-Chair, BE-Well
Assistant Professor of Medicine, University of California, San Francisco
Primary Care Provider and Clinical Investigator, SFVA Health Care System
Dr. Rustagi’s current focus is on screening for lung cancer, a disease which disproportionately affects Veterans. Dr. Rustagi seeks to identify those most likely to benefit from lung cancer screening using a variety of health metrics. Dr. Rustagi has become a national thought leader in lung cancer screening, conducting one of the first real-world studies of the effectiveness of lung cancer screening using advanced causal inference methods. Dr. Rustagi also seeks to train future leaders in medicine and population health and has been recognized for her mentorship with a 2025 Long-Term Mentoring Award by the UCSF’s School of Medicine.
Nicholas Holder, PhD
Co-Chair, BE-Well
Assistant Professor of Psychiatry, University of California, San Francisco
Clinical Psychiatrist, SFVA health Care System
Dr. Holder's research is focused on improving the quality and effectiveness of mental health treatment for Veterans with military-related posttraumatic stress disorder (PTSD). Specific areas of interest include: Understanding variability in response to evidence-based psychotherapies for PTSD; Improving access to evidence-based psychotherapy for PTSD; Understanding trends in evidence-based treatment for PTSD; Influence of Social Determinants of Health and Clinical Complexity of PTSD Symptom Presentation and Treatment; Understanding the process of symptom change during evidence-based psychotherapies for PTSD.
Karen Seal, MD
3DI Center Expert and Shareholder Forum Advisor
Professor of Medicine, and Psychiatry and Behavioral Sciences, UCSF
Chief, Integrative Health Service, SFVA Health Care System
Dr. Seal is an internist with research focused on pragmatic trials of complementary and integrative health interventions to improve chronic pain, opioid dependence, and posttraumatic stress disorder in veterans, as well as the implementation and evaluation of novel biopsychosocial clinical models to address complex chronic conditions and needs of rural veterans.
Emily Lum, MPH
3DI Administrative Officer
SFVA Health Care System
