The Mendoza lab's team includes full-time staff members and part-time employees who assist with studies.
Learn more about part-time opportunities.
Trina Colburn, PhD
Dr. Trina Colburn is the research manager for Dr. Jason Mendoza's projects. She is a Seattle native and received her PhD in clinical psychology from Seattle Pacific University and her BA in psychology from the University of Washington. She has been actively involved in various projects focused on the treatment and prevention of childhood obesity since 2007. She loves music, movies and spending time outdoors.
Jason Mendoza, MD, MPH
Dr. Jason Mendoza
has devoted his career to studying the promotion of physical activity and healthy eating among low-income and racial/ethnic minority children. He conducts community and school-based research on reducing sedentary activities, such as television viewing, and increasing physical activity, such as through the "walking school bus" and other "safe routes to school" programs. He also leads research on the influence of food insecurity on chronic diseases in children, such as HIV and diabetes.
Doris Uscanga, BA, PMP
Doris K. Uscanga is a Clinical Research Associate II and provides study coordination for multiple projects. Her research areas include children's obesity prevention, nutrition and physical activity, and she has worked on studies that involve "Fit 5 Kids" (a television-reduction study among Hispanic preschoolers), walking school buses and bicycle trains. She received her BA from the University of Houston in 2006 and a PMP certification from the University of Houston School of Continuing Education and Professional Studies. Before joining Seattle Children's Research Institute in July 2013, she coordinated various research projects at the Children's Nutrition Research Center at Baylor College of Medicine.
Alan Waite, BA
Alan Waite is the clinical research associate for the walking school bus study at Seattle Children's Research Institute. Having grown up as a student in Seattle Public Schools, he enjoys the partnership with the district on the study. Alan received his BA in psychology from Whitworth University. Prior to joining Children's, he was the lead coordinator for a study focused on the criminal justice process in King County.
More than a dozen part-time workers supervise kids as they walk and bike to school, for studies examining how those modes of transportation affect a child's weight and physical activity. Visit
Seattle Children's careers page
to learn more about available opportunities in the following areas:
Research Assessment Specialists
Front row, left to right: Lindsay Durkin, Aurora Gangan, Lauren Lynch, Marissa Ogren. Back row, left to right: Travis Beisheim, Mark Abbey-Lambertz, Sean Tyler, Junny Liu.
The research assessment specialists are trained members of the research team and are involved in many parts of the research process. The research assessment specialists are in charge of recruiting students and their parents to be part of the study, collecting data during assessments and managing data to ensure everything is complete and accurate. While research assessment specialists may take on specific roles and responsibilities, they all work together as a team to ensure the study runs smoothly.
Health Promotion Specialists
The health promotion specialists' (HPS) primary responsibility is walking students to and from school. This includes picking up students at designated stops in the neighborhood, teaching the students pedestrian safety and being a good role model - in particular of the safety behaviors that they are teaching the children. The health promotion specialists may also assist with recruitment and assessment alongside the research assessment specialists at the baseline assessments.