At the EHSC, our staff members are a diverse group of experts who bring a wealth of knowledge, experience, and passion to the table. They work collaboratively, bridging the gap between our scientists, stakeholders, and the community to shine light on some of the most pressing environmental health issues of our time. We invite you to explore our Staff Page to learn more about the individuals who make up our remarkable team.
Our Staff
Mariela Alaniz
Research Data Analyst
Mariela is a UC Davis alumna with a BS in Environmental Toxicology and a minor in Statistics. After graduating, she returned to pursue an MS in Biostatistics at California State University, East Bay where she discovered a passion for data analysis and statistical programming in health care. It's always been Mariela's goal to work in a field where she can give back by helping others, and she is happy to share she has found a job that allows for that! After work, Mariela likes to spend time with family and her beagle, read non-fiction, write poetry and compose.
mkpena@ucdavis.edu | Contact Mariela for COVID-19 and Wildfire Research
Clarisse Céspedes
Communications Specialist III
Clarisse is a Spanish journalist and translator who has worked as a content specialist for 15 years, focusing on the US Hispanic audience and Health information. She has multimedia experience and worked as a writer and a newscast producer for Univision and Telemundo. Clarisse got her journalism degree from the University of Barcelona and started working for UC Davis as a communication specialist for the ÓRALE Covid-19 project in 2021.
ccespedes@ucdavis.edu | Contact Clarisse for Website or Spanish content support.
José López García
Staff Research Associate
José graduated from UC Davis with a BS in Global Disease Biology and a minor in Public Health Sciences. As an undergrad, he interned at the Environmental Health Sciences Center, helping with wildfire research for his practicum. Now on staff, he's also working on the WHAT-NOW-CA and the COVID-19 Survey for Workers studies. As the Spanish Survey Coordinator, he assists with the studies in both English and Spanish.José comes from a family of immigrant farmworkers and is a first-gen, DACAmented Mexican American college graduate. He's been hooked on public health since taking his very first course at UC Davis, especially learning how disease, environment, research and intervention can affect vulnerable and marginalized communities. When he's not at work, José enjoys gardening, reading, exercising, running and anything involving outdoor activities.
jllopezgarcia@ucdavis.edu | Contact For: Wildfire & COVID-19 studies | ¡Hablo español!
Alex Mendelmar, PhD
Program Director
Dr. Mendelmar comes to us from UC Berkeley where as the Director of Experiential Learning at the Fung Institute he ran a large, highly successful program for engineering graduate students. Alex's background is in qualitative research, social sciences and communications. He received his PhD in Anthropology from UC Berkeley, after completing his dissertation on youth activism, political innovation and leadership. He holds an undergraduate degree in Economics from the University of Toronto. Alex's motivation for coming to UC Davis is his desire to make a difference locally. We think he definitely landed in the right spot.
amendelmar@ucdavis.edu | Contact Alex for programs & planning, project partnerships, annual retreat, pilot projects, & seed grants.
Addison U
Student Assistant- Contact Management
Addison is currently an undergraduate Pharmaceutical Chemistry major at UC Davis. With a keen interest in pharmacy and a potential minor in public health, he is actively exploring areas such as scientific research, lab work, and other forms of science and healthcare as future career interests. As a Student Assistant at the UC Davis Environmental Health Science Center, he meticulously tracks grants, publications, presentations, and contact information for funded researchers, ensuring accurate and easy-to-access records for center staff and members. When he is not working or studying, Addison enjoys movie nights with friends, reading novels with a cup of boba, and making delicious food from various cuisines.
Ruth Williams
Project Policy Analyst
As administrative chief, Ruth organizes meetings, projects and seminars for EHSC researchers and keeps all of our operations running smoothly. Ruth began her career at UC Davis in 2012 as an executive assistant in the Department of Public Health Sciences, but her interest in working with researchers began years ago when she helped manage an environmental science lab in the Bay Area. A problem solver at heart, Ruth loves her current job because she gets to facilitate research collaborations as they're developing. Ruth studied business and human resources at the University of Phoenix, where she also earned her Master’s in Business Administration.
ruwilliams@ucdavis.edu | Contact Ruth for AIMS review meetings & CLG meeting