Current Ph.D. Students

Heather K. Barr

Degrees: B.S. Health Sciences: Community Health Education, California State University, Sacramento, 2017; M.P.H.: Epidemiology, University of Nevada, Reno, 2019

Professional Interests: Mental Health, Animal-Human Interaction, Suicide Prevention

Background/Interests: In grad school, Heather interned with a Medical Examiner on suicide prevention projects and developed a passion for mental health. After completing her degree, she worked for UC Davis Medical Center as an epidemiologist and has taught epidemiology at CSUS since 2020. Coming back to graduate school, she returned to mental health research. Now, her focus is on animal-human interactions and how it can promote well-being and build community as well as the cost-effectiveness of animal-assisted programs. Find her around campus, you might get to pet a dog.

Advisors: Michelle Ko, M.D., Ph.D.

Entry Year: 2021

Bozhidar (Bobby) Chakalov

Degrees: B.A. in Economics from Sonoma State University, 2017; M.A. in Economics from San Francisco State University, 2019

Professional Interests: Policy Evaluation, Health Disparities, Health Inequities, Socioeconomic Determinants of Health, Vulnerable Population Health

Background/Interests: Bozhidar began pursuing his interest in health care research while earning his B.A. at Sonoma State University. While earning his M.A. at San Francisco State, Bozhidar’s research included the long-term health outcomes of the New Deal program and applying text analysis to the #MeToo movement. After graduating, Bozhidar taught Biostatistics in the M.P.H. program at SFSU and continued doing research at the Health Equity Institute. Bozhidar aims to become a university professor and a researcher addressing health disparities though policy and evaluation. When not working, he enjoys hiking, exploring new cuisines, and being with his loved ones.

Advisor: Michelle Ko, M.D., Ph.D.

Entry Year: 2020

Maria Cruz 

Degrees: B.S., Biology Concentration in Physiology, San Francisco State University, 2019; M.P.H., Community Health Education, San Francisco State University, 2021

Professional Interests: Latine Community, Health Equity, Social Determines of Health, Health Disparities, Low Income Communities 

Background/Interests: Maria Cruz became interested in Public Health while completing her BS at San Francisco State. Maria has experience working in health disparities research with the Health Equity Research Lab and the Health Equity Institute at SFSU. As an NIH-SF BUILD-funded student, Maria has gained experience as a researcher with a UCSF Lab in the biomedical field. Maria additionally, enjoys mentoring students so she can help them as her mentors have done for her. 

Advisor: Shani Buggs, Ph.D., M.P.H.

Entry Year: 2021

Sandra Flores

Degree: B.A., Comparative Literature and French, University of California, Berkeley, 2014; M.P.H., University of San Francisco, 2017

Professional Interests: Culturally appropriate interventions, Substance use, Mental Health, Maternal and Child Health, Preventative Care, Health promotion, Community Care

Background/Interests: For the past three years, Sandra has worked in the Department of Psychiatry and Behavioral Sciences at UCSF conducting research in addiction medicine as part of a study implementing patient navigators in emergency room settings. Working with patients that have opiate use disorder has taught Sandra about patient centered care and the complexities of navigating the medical system. While at UC Davis, Sandra aims to use what she has learned to research mental health predictors among children and adolescents. In her free time, she enjoys spending time with her husband, daughter, their two dogs and two cats.

Advisor: Julie Dang, Ph.D.

Entry Year: 2021

Andrea Guggenbickler

Degrees: B.S. in Global Disease Biology, University of California, Davis, 2018; M.P.H., Epidemiology Emphasis, University of California, Davis, 2021

Professional Interests: Comprehensive Sexuality Education Disparities; Sexual Health Equity; Sexual Assault Prevention, Education and Advocacy; Women and LGBTQIA+ Health; Mental Health; Health Disparities

Background/Interests: Andrea is a Super Aggie; obtaining her BS in Global Disease Biology and her Masters of Public Health, and now pursuing her Ph.D. in Public Health Sciences, at the University of California Davis. She has engaged in a breadth of research, from menstrual hygiene product access to understanding sexual health on college campuses and adolescent pregnancy rates and comprehensive sex education disparities. Through her work in her Ph.D., she has demonstrated an interest in both quantitative and qualitative methodologies and plans to integrate both into her future research. Andrea’s goal is to one day work in a research and teaching capacity.

Advisor: Marius Koga, M.D., M.P.H.

Entry Year: 2021

Caroline Abbott Joyce

Degrees: Bachelor of Science, International Health, Georgetown University (2015); Master of Science, Nutrition for Global Health, London School of Hygiene and Tropical Medicine (2016)

Professional Interests: Global nutrition, maternal and child health, dietary assessment, micronutrient deficiencies, climate impacts, climate adaptation

Background/Interests: Caroline has over ten years of experience in international health research. Through her Masters and a Research Assistant position at Kaiser Permanente, Caroline honed her skills in project management, data collection and analysis, manuscript writing, and presentation development. Her academic journey at UC Davis has primarily focused on dietary assessment and micronutrient deficiencies. Caroline’s field experiences in Tanzania and Chile cultivated an deep understanding of the significance of culturally tailored health solutions, enriching her approach to addressing global health issues. Her dedication to health improvement is underscored by a portfolio of published papers and presentations, contributing to the collective knowledge in global health.

Advisor: Christine Stewart, PhD., M.P.H.

Entry Year: 2020

Zoe Baysdorfer Kaplan

Degrees: B.A., Music, Boston University, 2012; M.P.H., Brown University, 2018

Professional Interests: Epidemiology of autism and developmental disabilities, cultural influences on mental illness

Background/Interests: Zoe Kaplan first became interested in studying mental health in a public health context while working in special education. She completed her M.P.H. in 2018 at Brown University, where she conducted her thesis research on technology use among adolescents with autism. Since graduating, Zoe has worked as a research associate at the Prevention Research Center in Berkeley, CA. Her work focuses on the epidemiology of alcohol use disorder and the spatial analysis of DUI arrests. While at UC Davis, Zoe aims to use public health research to improve health outcomes among people with autism and other developmental disabilities.

Advisor: Rebecca Schmidt, Ph.D.

Entry Year: 2020

Charlotte Lorraine Kerber

Degrees: M.S. in Agriculture: Nutrition and Food Science, Cal Poly Pomona, 2014; B.S. in Food and Nutrition: Nutrition Science, Cal Poly Pomona, 2010

Professional Interests: Charlotte's research spans across nutrition, food Insecurity, cancer prevention and care delivery, health policy, health disparities, community engagement, implementation science, program evaluation, and health services research.

Background/Interests: Charlotte has over a decade of experience working to improve health equity and reduce disparities in underserved communities. She previously taught Nutrition at Cal State Northridge and Cal Poly Pomona, and developed and managed National Cancer Institute-supported clinical trials for Children’s Oncology Group. Charlotte serves her UC Davis community as the Primary Leader of the Public Health Sciences Graduate Student Organization, and her California community advocating for better food access as Chair of the Board of Directors for the state-wide nonprofit, Nourish California. Her research uses community-engaged methods to explore social determinants of health, cancer care delivery, behavior change, and program development and implementation. Charlotte hopes to support evidence-based policy and practice transformation to improve nutrition access and cancer prevention outcomes.

Advisor: Laura Fejerman, M.Sc., Ph.D.

Entry Year: 2020

Navneet Kour

Degrees: B.D.S., Bachelor of Dental Surgery, University of Jammu, 2022; M.S. Health Informatics, UC Davis, 2024

Professional Interests: Health informatics, epidemiology, computational sciences

Background/Interests: : Navneet's professional journey has been a dynamic and evolving exploration at the intersection of patient care, technology, and computational sciences. With a foundation in dental surgery, she has transitioned from clinical practice to the innovative field of health informatics, reflecting a deep passion for transforming healthcare through technology. Her academic path, culminating in a Master’s in Health Informatics from UC Davis, has uniquely positioned her to merge clinical expertise with data-driven insights. Navneet’s experience spans anti-tobacco research, public health initiatives, and epidemiological studies, with a particular focus on harnessing data to drive better health outcomes and improve public health outcomes.

Advisor: Nick Anderson, Ph.D.

Entry Year: 2024

Javier A Morla Estrada

Degrees: B.A., Economics and International Relations, Northeastern University, 2006; M.S. Development Management, American University, 2013

Professional Interests: Occupational and Environmental Health, Migrant Health, Program Evaluation, Health Policy, Social Behavior Change Communication, Global Health.

Background/Interests: Javier has eight years of experience evaluating the impact of global health programs and policies related to infectious disease and occupational health. Javier recently worked in Central America where he managed research activities of a national study on the impacts of discriminatory gender norms on gender-based violence in Honduras and a U.S. Department of Labor project aimed at improving occupational health and safety of agricultural migrant workers in the states of Oaxaca and Veracruz. With a Ph.D. in Public Health Sciences, he hopes to become a university professor and researcher focusing on migrant workers’ health through policy and translational research.

Advisor: Irva Hertz-Picciotto, Ph.D.

Entry Year: 2021

Amit Paul

Degrees: B.A., Creative Writing, Sierra Nevada College, 2018; M.P.H., Sociomedical Sciences, Columbia University, 2023

Professional Interests: Global Health, Social Determinants of Health, Chronic Disease, Health Disparity, Mixed-Methods Research, Nutrition, Mental Health

Background/Interests: Amit is a Gates Millennium Scholar. His bachelor's degree was in creative writing. He became interested in public health because of his previous service work for disadvantaged communities, which he developed a passion for. He completed his MPH at Columbia University. While Amit was studying at Columbia, he spent 3 months in the Dominican Republic researching the correlation between female sexual dysfunction and mental health. Then, Amit spent 3 months in Chile researching loneliness in older adults. Amit enjoys writing poetry, exercising, and being in nature.

 Entry Year: 2024

Kristi Henricksen Perry

Degrees: B.S., Electrical Engineering, Worcester Polytechnic Institute, 1994; M.B.A., Entrepreneurship, University of Arizona, 2002; M.P.H., Climate Change and Health Equity, California State University, Sacramento, 2023

Professional Interests: Climate change, Health equity, Social-ecological determinants of health, Environmental health, Environmental justice

Background/Interests: With over a decade of healthcare administration and climate change non-profit leadership experience, Kristi merged her interests in the field of public health. She attained her MPH with research topics spanning climate change and health issues such as respiratory illness, heat-related illness, vector-borne illness, food insecurity, and mental health. In 2022, she studied in Costa Rica, focusing on nature-based and built environment solutions that mitigate and adapt to climate change while improving health. With a Ph.D. in Public Health Sciences, Kristi would like to create and teach climate change and health curriculum as a university professor and researcher.

Advisors: Irva Hertz-Picciotto, Ph.D.

Entry Year: 2023

Melissa Pighin

Degrees: M.P.H. Epidemiology, University of California, Davis (2016); B.A. Environmental Studies, University of Washington (2012)

Professional Interests: Biomedical Informatics, Data Quality, Neuroepidemiology, Cardiovascular Disease and Stroke, Cancer Epidemiology

Background/Interests: Melissa has spent three years working as a quality control (QC) analyst for healthcare systems and research institutes. Her work focuses on the standardization of patient data collection and QC processes in compliance with The Joint Commission and other regulatory agencies. She is passionate about using biomedical informatics to improve data quality and to facilitate the real-time dissemination of quality of care findings to stakeholders for clinical practice improvement. Her background emphasizes neurological disorders and diseases with additional exposure to cardiovascular disease and oncology. She is excited to return to UC Davis and to further improve clinical data quality with a Ph.D.

Advisor: Amparo Villablanca, M.D.

Entry Year: 2020

Lucy Rios

Degrees: B.A., Anthropology, University of California Santa Cruz, 2018; M.P.H., San Francisco State University, 2021

Professional Interests: Latinx Health, Prevention Science, Health Equity, Healthy Aging, Federally Qualified Health Clinics, Hearing Loss, and Technology and Medicine.

Background/Interests: Lucy (she/her) is a Ph.D. student in Public Health Sciences at UC Davis. Her research interests include addressing cancer disparities, health inequities, and Latinx health. Her dissertation focuses on understanding the barriers and facilitators to lung cancer screening. Under the mentorship of Moon Chen Ph.D, M.P.H, Lucy is currently the project manager for the Enhancing Lung Cancer Screening through a human-centered approach (ELFE) study funded by the V-Foundation. Lucy earned a master’s degree in public health from San Francisco State University, and her undergraduate degree in anthropology from the University of California Santa Cruz. As a first-generation scholar who comes from Latin roots and was Oakland raised, Lucy is passionate about supporting, mentoring, and training the next generation of public health scholars. 

Advisor: Moon S. Chen, Jr. Ph.D., M.P.H.

Entry Year: 2021

Olamide Sanuth

Degrees: B.S., Natural Sciences and Mathematics, Thomas A. Edison State College, 20212; M.A. International Development, University of Denver, 2020, M.S. Global Health Sciences, University of California San Francisco, 2022

Professional Interests: Maternal and Child Health, Environmental Health, Infectious Disease, Social Determinants of Health, Global Health

Background/Interests: After six years of work in molecular diagnostics detecting pathogens in food and the environment, Lammy pivoted into global health sciences by completing a Master of Arts in international development and Humanitarian Assistance at the University of Denver and, more recently, a Master of Science in Global Health from UCSF. This allowed him to engage in research spanning maternal, child, and reproductive health. His current

research interests include the impact of the environment on maternal health. With a PhD in Public Health, he hopes to teach at the University level and address health disparities in marginalized communities through implementation science approaches. In his free time, he enjoys reading, exercising, and spending time outdoors and with his family and friends.

 Entry Year: 2024

Roslyn Seitz

Degrees: B.A., Biology UCSB 2002; M.P.H., B.S.N., M.S.N., Emory University 2004, 2006, 2007

Professional Interests: Health Equity, Social determinants of Health, Health Disparities, Emergency Medicine, Global Health

Background/Interests: Roslyn has over a decade of experience as an emergency department nurse practitioner and a background working and teaching quality and safety. Roslyn currently works clinically serving the unhoused and teaching at Betty Irene Moore School of Nursing. With a PhD in Public Health Sciences Roslyn aims to promote health equity and teach the next generation of students as a university professor and researcher.

Entry Year: 2024

Jason Singson

Degrees: M.P.H., UC Davis 2020; B.S., Global Disease Biology, UC Davis 2019

Professional Interests: Structural and Political Determinants of Health, Filipino/Filipino American Health, Community Investment and Resilience, Infectious Disease, Health Equity, Disaster Epidemiology, Emergency Preparedness, Legal Epidemiology, Applied Epidemiology, Social Epidemiology, Global Health, Public Health Practice Research, Public Policy and Health Policy

Background/Interests: Jason returns to Davis, bolstered by his experiences as an Applied Epidemiology Fellow (’22) and current work as a Health Equity Research Scientist with the California Department of Public Health. As a COVID-19 response epidemiologist, he constantly dealt with upstream factors, such as policy, socioeconomics, and racism. Post-fellowship, he joined the Office of Health Equity to continue focusing on the upstream factors affecting health. Through policy and epidemiology, he looks to advance health equity and health justice. Away from his computer, you can find Jason bowling, drinking boba, officiating track and field meets, or organizing in Filipino community health work.

 Entry Year: 2024

Tamara Solorzano

Degrees: B.S. Human Biology, UC Santa Cruz, 2013; Masters of Public Health, UC Davis, 2017

Professional Interests: Global Health Disparities, Infectious Disease, Environmental Health, Climate Change, Preventative Care, Mental Health

Background/Interests: Tamara is a returned Peace Corps Volunteer that served in Ghana from 2014-2016 as a Science High School teacher. She then worked in creating an international medical school summer program for a non-profit volunteer organization that displayed the difference between Japanese, Chinese, Taiwanese and American health care systems. Tamara then worked in disaster emergency management at FEMA from 2017-2020 where she worked with State, Tribal and Territory governments on their disaster housing plans in steady state and worked with disaster survivors when deployed. Tamara in her free time likes to play videogames, try out new cooking recipes, and go bowling.

Advisor: Irva Hertz-Picciotto, Ph.D.

Entry Year: 2020

Ya Yang

Degrees: B.A. Public Health and Psychology, UC, Merced, 2019; M.S. Global Health, Georgetown University, 2020

Professional Interests: Health Equity; Tobacco Control; LGBTQIA2+; Immigrants and Refugees Health; Cancer Disparities; Disability

Background/Interests: As a deaf gay refugee, Ya is deeply committed to addressing health disparities within marginalized communities. Since completing his master's degree, he has worked as an infection control epidemiologist, implementing effective public health practices to protect patients, staff, and the community during the pandemic. With a PhD in Public Health, Ya aspires to become a researcher focused on the foundations of health equity. In his free time, he enjoys playing badminton, exploring different ethnic cuisines, and sleeping.

Entry Year: 2024