The Our Voice Team

Abby King

Faculty Director

Dr. King, PhD, is a professor of the Department of Epidemiology & Population Health and of Medicine at the Stanford Prevention Research Center. She leads an interdiscplinary research team aimed at creating cutting-edge behavioral and technological programs promoting the healthy lifestyles necessary for living long and productive lives. Her teams' borderless health promotion solutions seek to create health programs that break down barriers related to education, literacy, language, and computer knowledge and access.

Ann Banchoff

Director of Community Engagement

Ann Banchoff, MSW, MPH, has a background in public health, social work, and international human rights, as well as broad experience in developing and sustaining community-academic partnerships.  She has worked extensively with migrants and other underserved populations in the California Bay Area and in Oaxaca, Mexico, and has also lived and worked in Russia, France, Ethiopia, and Peru.  Ann co-founded the Office of Community Health at the Stanford University School of Medicine in 2005, and served as its Director of Educational Programs until late 2014.  

Ankita Kaulberg

Head of Product, Our Voice Platform

Ankita Kaulberg, BS, MBA, is a social impact-driven product leader focused on education and healthcare technologies. Her prior work has ranged from building research-backed learning platforms used by millions worldwide, to early detection systems tracking the spread of infectious diseases through community health data. Ankita is passionate about inclusive tech development and has traveled to all continents (excluding Antarctica) to connect with diverse communities. She champions building equitable, efficacious, and engaging experiences - which she seeks to also help do at Our Voice at scale.

Zakaria Doueiri

Research Assistant and Implementation Coordinator

Zakaria Doueiri (he/him) is a research assistant and implementation coordinator at the Stanford Prevention Research Center. During his undergraduate career, he studied the intersection of neurobiology and social determinants of health and developed an interest in learning how technology can be leveraged to offer more equitable outcomes for underserved populations. For his senior capstone project, he investigated the integration of virtual reality into the Our Voice method to better visualize and document the perspectives of unpaid care workers in Bogotá, Colombia.

Patricia Rodriguez Espinosa


Dr. Patricia Rodriguez Espinosa, PhD., MPH, is a native of Habana, Cuba, and clinical psychologist by training.  She is an Assistant Professor in the Epidemiology and Population Health Department and also serves as the Associate Director of Research for the Office of Community Engagement at Stanford Medicine. Her research concentrates on health equity issues (particularly among Latinxs and immigrant communities), cardiovascular disease prevention, racial residential segregation, well-being across cultures, and the science of Community-Based Participatory Research, citizen science, and other participatory research approaches.

Maja Pedersen 

Research Consultant

Dr. Pedersen’s research in grounded in community-based and participatory research approaches. Her work is focused on the inter-related themes of (1) improving understanding of individual, social, and environmental determinants of and barriers to physical activity, especially among girls and women; and (2) developing and implementing behavioral interventions for health promotion and disease prevention in complex community settings. In recognition of her work, she has been a Fulbright Scholar to Norway and a U.S. Sports Diplomacy Delegate to Peru. She is currently a National Cancer Institute K00 Fellow, using a CBPR approach to promote physical activity among rural Indigenous communities. 

Praveena Fernes

Research Consultant

Praveena K. Fernes (PhD Candidate) is a Marshall Scholar in the UK, where she studied political ecology at SOAS University of London and now public health and policy at the London School of Hygiene and Tropical Medicine. As a Fulbright Research Scholar, she curated Visible Ghosts, a virtual installation that illuminates villagers’ evolving relationship to the Mun River and wetlands in Thailand over the past quarter century through objects, maps, and Our Voice research. She is currently exploring the place-based experiences of people who are homeless and seek drug and alcohol services in East London.

Ines Campero

HEARTS Clinical Research Operations and Project Implementation Lab Manager

Maria Ines Campero has nearly two decades of experience conducting community-based e-health behavioral clinical trials focusing on ethnic minority groups and populations traditionally underrepresented in research studies. In recent years she has led innovative studies that evaluate the impacts of Our Voice interventions on health and wellbeing. These interventions aim to engage community members in enhancing their local built environments with the purpose of facilitating the adoption of healthy lifestyles that lead to an increase in the wellbeing of the community.

Cesar Gabriel Lopez

Social Science Research Professional

Cesar Lopez is a Social Science Research Professional at the Stanford University School of Medicine’s HEARTS Lab. He holds a Bachelor of Science degree in Public Health from San José State University. Cesar is committed to advancing behavioral medicine research and healthcare initiatives, contributing his expertise to the fields of strategic intervention, community health outreach, and healthcare.

Dulce Maria Garcia

HEARTS Lab Assessment Team Manager

Dulce Maria Garcia holds a Bachelor of Science degree in Kinesiology from San José State University. She has worked on community-based clinical research studies with Dr. Abby King for over 15 years. During this time, she has led study recruitment efforts, physical activity interventions and for the past 10 years she has led the assessment team. Assessments include environmental audits using observational tools (e.g. SOPARC, PARA, and MAPS) as well as physical function testing and data collection via Actigraph accelerometers. Dulce is also part of the Our Voice data management team where she builds and maintains study databases.

Katie Jennifer Wu

PhD Student

Katie is a PhD student in Environment and Resources (E-IPER). Her research focuses on the intersection of urban ecology, well-being, and climate resilience. She uses large-scale data analysis and AI to examine the impact of urban infrastructure development on human and planetary health. Katie holds a Master of Engineering Management from Duke University, an M.S. in Medical Science from the University of Colorado School of Medicine, and a B.S. in Animal Science from Cornell University. She is a Dean's Graduate Scholar, a Stanford Dalai Lama Fellow, and a Graduate Fellow at the Stanford Institute for Human-Centered AI (HAI).

Sofia Analise Portillo


Sofia Analise Portillo (she/her) is a Master’s student in the Community Health and Prevention Research program at Stanford School of Medicine. In undergrad, she studied psychology and comparative studies in race and ethnicity, examining how power structures affect everything from how white families talk about race to how we promote healthy eating. She is interested in place-based initiatives with an emphasis on food as medicine. 

Our Voice Tech Team

Community Engagement Student Interns

Jasmine Nevarez

Class of 2024

Jasmine Nevarez (she/hers) is a senior at Stanford and is majoring in Human Biology with a focus in Biosocial Influences on Human Health. She is from Hercules, California and in her free time she enjoys baking for her family and going for walks by the bay. Jasmine was originally interested in Our Voice because of her curiosity in health equity within diverse communities and the importance of community-driven science. In addition to her work with Our Voice, Jasmine also volunteers with Systole and Human Biology Spotlight.

Shirley Thuy Le

Class of 2026

Shirley Thuy Le (she/hers) is a Vietnamese American sophomore at Stanford University. She is majoring in Human Biology as a pre-medical student with the goal of becoming an emergency medicine physician while working in public health. Born and raised in Oakland, California from a first-generation and low-income background, she has seen first-hand the barriers to equitable and accessible healthcare. Having volunteered with various community organizations in social-justice related service projects has further fueled her passion for community health. Shirley joined Our Voice to help create tangible change in the lives of community members and empower unheard voices through citizen science. 

Alexandra Szawranskyj

Class of 2025

Alexandra Szawranskyj (she/they) is a junior majoring in Human Biology with a concentration in Global Health and a minor in Modern Languages. Originally from Clearwater, Florida, Alexandra joined Our Voice with a passion for uplifting the health, knowledge and prosperity of diverse communities around the world while centering her efforts around community-driven health equity research. In addition to her work with Our Voice, Alexandra also volunteers as a Patient Navigator for Stanford's Cardinal Free Clinics and serves on the leadership board of the Stanford Disability Alliance. In her free time, she enjoys learning new languages, climbing, and baking with friends.

Vignesh Kumar

Class of 2025

Vignesh (Vig) Kumar (he/him) is a third-year Human Biology student at Stanford University, originally from the midwest college town of Columbia, Missouri. His major concentration is “Designing for Ethical, Behavioral, and Social Approaches to Health,” which he believes Our Voice embodies perfectly. Vignesh is passionate about listening, empathizing, and connection as forms of healing–both on an individual and community scale–and hopes to make communities heard through Our Voice. He has also explored this passion through the Center for Biomedical Ethics and Fogg Behavior Design Lab. On campus, Vignesh enjoys engaging in mindful practices and helps run a competitive Indian dance team (Basmati Raas)–which, together, sometimes feel contradictory!

Esther Ceballo Ortiz

Class of 2026

Hello, I am Esther Ceballo Ortiz (she/her), a sophomore pursuing a degree in Human Biology. Originating from the Dominican Republic and presently residing in Fayetteville, GA, my academic focus lies in the intersection of public health and health equity. With a future vision of establishing accessible and equitable healthcare, I am honored to join the esteemed Our Voice team. I am eagerly anticipating the opportunity to connect with each member and contribute to our mission.

Diana Chavez

Class of 2027

Diana Chavez (she/hers) is a Salvadoran American freshman at Stanford University. She is majoring in Human Biology and is hoping to work in public health. She is from Richmond Virginia and in her free time she enjoys reading and embroidering. Her interest in health equity stems from her passion for social justice. Outside of her work with Our Voice, Diana is a volunteer for tutoring programs such as Barrio Assistance. 

Airin B. Valdez-Monroy

Class of 2025

Airin B. Valdez (she/her/Ella) is a junior double majoring in CSRE and Medical Anthropology with a minor in education. She is from Los Angeles, California, and she enjoys photography, hiking, and spending time with her loved ones during her free time. Airin joined Our Voice because of her passion for health equity amongst marginalized communities and ensuring everyone has access to healthcare. Collective change is also important to Airin and Our Voice's approach to community and citizen science allows Airin to continue working towards collective liberation. In addition to her work with Our Voice, Airin also serves as the Intern Program Coordinator for Stanford’s Women’s Community Center.

Tech Platform Re-Architecture Student Interns

Sumedha Kethini

Class of 2027

Sumedha Kethini is a freshman student at Stanford University from Columbus, Ohio. She plans to major in either Computer Science or Management Science & Engineering. Sumedha is passionate about equity and environmental sustainability, but she continuously finds new fields that intrigue her, so she can't wait to explore energy and health this quarter. She's involved in Women in Computer Science and BASES, the entrepreneurship club at Stanford. In her free time, Sumedha likes playing pickleball and going on spontaneous walks.

Karen Vo

Class of 2027

Hello! My name is Karen Vo and I am a freshman studying Computer Science at Stanford University. During my academic journey, a significant area of interest for me has been health equity and the intersection of using technology and strategic leadership to combat these issues. I came across the Stanford Our Voice initiative, which deeply resonates with my passion for promoting health equity through innovative solutions. This initiatives’ commitment to community-driven local action aligns with my values, and I am eager to bring my skills to develop innovative tools to this organization.

Team Photos

Dr. King (left) and Dr. Winter (right)

OV team meeting over Zoom

Dr. King and the OV team test out the Discovery Tool

OV Student Team Meeting 2024

Our Voice Impact

"This experience has changed my life.  I see inadequacies everywhere I go as it relates to pedestrian access and safety.  I even stop [at] construction sites to remind them to be considerate of the handicapped in our community.  Thank you all so much for this awareness and empowerment to require change."

~ Pam Jiner, GirlTrek Advocacy Leader, Denver CO