Contact Us

Our evaluation center is staffed by this team of friendly associates.



Catherine Dizon

Catherine Z. Dizon, MPH, Project Director

(530) 754-8317

Catherine Dizon is the Project Director of TCEC, where she focuses on the use of mobile technology for data collection.  She has presented on this topic for TCEC’s regional trainings as well as national conferences for Youth+Tech+Health, American Evaluation Association, and American Public Health Association.  Catherine represents TCEC on various statewide work groups and provides technical assistance and training. She also spearheads our handheld device lending program where our Prop-99 clients can borrow a small fleet of iPod touch, iPad, and Android tablet devices for offline data collection.  Catherine graduated with a BS in Human Development and Master of Public Health from UC Davis.

Danielle Lippert

Danielle Lippert, MPH, Evaluation Associate

(530) 754-9429

As an evaluation associate, Danielle is responsible for analyzing and evaluating strategies to improve training capacity, driving efforts to better understand client needs and identify strategies for addressing them, and conducting regular needs assessments to identify desired topics and means of delivery particularly in priority populations. Prior to working for TCEC, Danielle worked as a program coordinator serving the American Indian/Alaskan Native population of California, focusing on coalition building, data collection and analysis, and policy change. Danielle has a Bachelor of Science degree in Kinesiology from San Diego State University and a Master of Public Health from the University of California, Davis.

Diana Cassady

Diana Cassady, DrPH, Principal Investigator

(530) 754-5550

As the principal investigator (PI), Diana Cassady has overall responsibility for TCEC’s evaluation technical assistance activities and research agenda. Committed to using technology to improve efficiency and learning, she initiated TCEC’s mobile device program for data collection and co-created an online, interactive training module for data collectors.  Her research on tobacco control policy in California has been published in Preventing Chronic Disease and Tobacco. She also conducts research on food deserts and food advertising, has evaluated programs in nutrition education in schools and community settings, and teaches in the MPH program at UC Davis. Diana is a professor in the Department of Public Health Sciences at UC Davis, with a master’s degree in communication from Stanford University and a doctoral degree in health education from the School of Public Health at UC Berkeley.

Diana Dmitrevsky

Diana Dmitrevsky, Administrative Specialist

(530) 752-9951

Diana Dmitrevsky is an Administrative Assistant at The Tobacco Control Evaluation Center, where she oversees the day-to-day office activities and manages our communications. She is usually your first point of contact when calling TCEC.  She will direct your requests for technical assistance to our evaluation staff and help in any way she can.  She has more than 25 years of experience working for public health and educational organizations.

Jeanette Treiber

Jeanette Treiber, PhD, Program Manager

(530) 752-9966


Jeanette Treiber (PhD) is a Program Manager for the evaluation of disease prevention programs, including tobacco, diabetes, and cancer prevention programs. She has also taken the lead on several research projects such as culturally competent evaluation that helps projects make their work relevant for multiple population groups, and evaluation training methods and measures. She has published on health policy evaluation, culturally competent evaluation, and evaluation training. Other areas of her expertise are data analysis, coalition research, and instrument testing. Previously, Jeanette was the TCEC project director, worked on an evaluation of California's Workforce Investment System, and on impact evaluations of Credit with Education Programs in several African countries. Jeanette's PhD in Comparative Literature, and MS in Community and Regional Development, are from UC Davis.

Jorge Andrews

Jorge Andrews, MPH, Evaluation Associate

(530) 754-8929

Jorge Andrews is an evaluation associate with the Tobacco Control Evaluation Center. Jorge is part of the regional training team, conducting in person trainings as well as webinars. He has worked as part of the Healthy Stores for Healthy Communities support team at TCEC, providing assistance to all Local Lead agencies as they collect data from tobacco retailers throughout the state. He oversees the device lending program at TCEC, as well as the SurveyAnaytics accounts for all prop 99/56 funded projects. Jorge has a BA degree in History and Cultural Anthropology from UC Riverside, as well as Master in Public Health degree from UC Davis.


Robin Kipke, MS, Evaluation Associate

(530) 752-9990

As an evaluation associate, Robin Kipke’s primary mission is to strengthen the evaluation capacity of client organizations by developing “how-to” resources, online tutorials, webinars and face-to-face trainings on evaluation methodology and practice.  Currently she is exploring how to utilize data visualization principles to communicate evaluation findings more effectively.  Robin has also led in-country data collection teams on large scale evaluations of village banking programs in Africa, evaluated a rural community media project for Cooperative Extension, and facilitated strategic planning efforts for local non-profits.  Robin earned an MS degree from UC Davis in International Agricultural Development with a specialization in program management and evaluation.


Sarah Hellesen, Research Assistant

(530) 752-4850

Sarah Hellesen is a Research Assistant at the Tobacco Control Evaluation Center, where she manages the quarterly newsletter and assists with other TCEC projects. She has previously worked as a research assistant on a Tobacco Related Disease Research Program-funded pilot Community Academic Research Award, and as a reporter for the California HealthCare Foundation's Center for Health Reporting, covering issues of healthcare access and quality in California. She graduated with a degree in Sociology from UC Davis.

Jayveeritz Bautista

Jayveeritz Bautista, Graduate Student Researcher

Jayveeritz Bautista is a Graduate Student Researcher at the Tobacco Control Evaluation Center. He assists with TCEC projects, specifically data cleaning, analysis, and reporting. In addition, he is currently working on instrument development and testing. Jayveeritz is currently pursuing a Master of Science in Forensic Science at the University of California, Davis, and has a Bachelor of Science in Forensic Chemistry with a minor in Nutrition Science at the University of California, Davis.

Andersen Yang

Andersen Yang, Student Assistant

As the student assistant at TCEC, Andersen Yang supports the work of TCEC staff. Andersen assists in in organizing databases and assists in the PETS project. He helps with extracting, editing, and sorting files so that they can be accessible for use by staff. Andersen is a 4th year Statistics student who wants to get more involved with public health administration and management in the future.

Cindy Valencia

Cindy Valencia, Graduate Student Researcher

Cindy Valencia is a Graduate Student Researcher at the Tobacco Control Evaluation Center. She assists with TCEC projects, such as the Health Stores for a Healthy Community. Cindy is currently pursuing a PhD in Public Health at the University of California, Davis, and has a Masters Degree in Public Health with an emphasis in Nutrition. She aspires to obtain a Ph.D. and leverage her experience to affect public policy in underserved communities, like the Central Valley.

Wesley Yang

Wesley Yang, Graduate Student Researcher

Wesley Yang is a Graduate Student Researcher at the Tobacco Control Evaluation Center. Wesley assists TCEC through web management and data analysis relating to tobacco control measures. He is currently pursuing a Master of Public Health at the University of California, Davis. He earned a Bachelor of Arts in Youth Ministry and Bachelor of Sciences in Psychology from Oklahoma City University. Wesley is interested in learning more about control and prevention.

Lance Jimenez

Lance Jimenez, Student Assistant

Lance Jimenez is a student assistant at TCEC. He aids the staff by organizing and maintaining files and providing very tedious but very necessary help with Healthy Stores for a Healthy Community data organization. Lance Jimenez is currently a freshman in UC Davis pursuing a Bachelor's of Science in Genetics.