Department of Emergency Medicine
Division of Epidemiology


Diana Cassady Primary prevention of chronic disease, diet and physical activity, social marketing, reducing disparities in health status, and environmental and policy strategies to promote health.
Professor, DrPH


Rosemary Cress My current research activities include use of cancer registry data to identify disparities in treatment and survival for patients with ovarian cancer, colorectal cancer and lung cancer. I also am actively involved with expanding cancer epidemiology and population sciences at the UC Davis Cancer Center, where I work with academic and clinical researchers to identify areas where California Cancer Registry and SEER data can be used to answer questions about cancer diagnosis, treatment and survival.
Associate Professor, DrPH


Lorena Garcia Health disparities, in particular obesity and diabetes (metabolic and nutritional disorders), intimate partner violence (injuries), immigrant health and acculturation in the Latino community.
Associate Professor, DrPH, MPH


  David Ross Gibson Epidemiology and prevention of HIV/AIDS, community interventions, social epidemiology.
Emeritus Professor, PhD

Ellen B. Gold Reproductive and cancer epidemiology, epidemiology of reproductive function and disorders especially menopause, secondary amenorrhea, anovulation, abnormalities of ovarian function, and spontaneous abortion.
Emeritus Professor, PhD


Irva Hertz-Picciotto Dr. Hertz-Picciotto is an environmental epidemiologist with over 200 scientific publications addressing effects of environmental exposures on pregnancy and child development. She directs the CHARGE Study, the first large, comprehensive population-based investigation of environmental factors in autism, and MARBLES (Markers of Autism Risk in Babies - Learning Early Signs), to search for early biologic markers that will predict autism. She is Director of the Northern California Center for the National Children's Study. Dr. Hertz-Picciotto has served as Advisor to numerous federal and state agencies, including the U.S. Environmental Protection Agency, National Toxicology Program, and the California Air Resources Board. She chaired several National Academy of Sciences expert panels, most recently the Institute of Medicine Committee on Breast Cancer and the Environment, and honored with the Goldsmith Lifetime Achievement Award from the International Society of Environmental Epidemiology.
Interim Epidemiology Division Chief, Professor, PhD


Jeffrey Hoch Dr. Hoch’s experience is in health services research related to cancer, mental health, and other health issues affecting poor and vulnerable populations. He is an award winning teacher who has taught Health Economics and Economic Evaluation classes in the United States and internationally. Dr Hoch pursues research making health economics more useful to decision makers.
Professor, PhD


Philip H. Kass Non-experimental inference, epidemiologic methodology and analysis epidemiology of environmental hazards of animals and humans, companion animal epidemiology.
Professor, DVM, MPVM, PhD


Michelle Ko social determinants, disparities in health, access and quality of healthcare, healthcare safety net systems, diversity and health workforce
Assistant Professor, MD, Ph.D.


Patrick Marius Koga Global refugee crisis impacts on host countries’ health systems and populations; posttraumatic stress disorder (PTSD) in war refugees and victims of oppression and violence from the Middle East and Central Asia; subthreshhold PTSD as an occupational risk in law enforcement officers; refugee telehealth in UNHCR camps to link up “upstream” with downstream” public health communities; sociocultural, religious/spiritual, and brain correlates of moral disengagement in dehumanizing others, war atrocities, and terrorism. ULYSSES PROJECT Led jointly by Dr. Koga, Dr. Carl Stempel, CSU East Bay, and Dr. Joseba Achotegui, Professor of Psychiatry at University of Barcelona, Faculty of Medicine, Secretary of World Psychiatric Association/Transcultural Psychiatry Section, and author of Ulysses Syndrome and Ulysses Scale. Demedicalizing the migration experience, Ulysses Project aims to reduce post-resettlement PTSD and comorbid conditions in refugees while increasing their resilience and social integration.
Assistant Professor, MD, MPH, FRSPH

916- 254-9959

J. Paul Leigh Econometrics, Health and Labor Economics.
Professor, PhD

916-734-8542 CHSR/PC

Stephen A. McCurdy Epidemiology, occupational hazards for farm workers, occupational hazards for semiconductor workers, general occupational and environmental medicine, toxicology, pesticides, heavy metals.
Professor, MD, MPH


Brad Pollock
Department Chair, Professor, PhD, MPH

530-752-7250 MS1C
916-734-4548 Ticon II

Marc B. Schenker Environmental and occupational risk factors for respiratory disease and lung cancer, occupational and other health issues of migrant populations, health hazards of agricultural exposures especially respiratory and pesticide risks, occupational reproductive hazards, health hazards in the semiconductor industry, international issues in occupational and environmental health.
Distinguished Professor, MD, MPH

530-752-5676 MS1c
530-754-8942 Mrak

Rebecca J. Schmidt Molecular epidemiology, gene by environment interaction in the etiology of reproductive and child developmental outcomes, and related mechanisms. Currently examining the role of maternal nutrients, particularly folate and other B-complex vitamins, as they impact child neurodevelopment, potentially though epigenetic DNA methylation pathways.
Assistant Professor, PhD


Byung Kwang (BK) Yoo Health economics, health policy, and health services research. Research areas include patient behavior model to choose prevention, health insurance, health workforce, long-term care and international comparisons of health care systems. CV (PDF)
Associate Professor, MD, PhD




  Stephanie Burns
Assistant Editor (Gold)