Meet the team
Jeffrey J Marotta, PhD
President, Senior Consultant
Dr. Marotta is an internationally known problem gambling and responsible gaming expert. He serves as President and Senior Consultant with Problem Gambling Solutions, Inc., Chief Scientific Officer with Evive, Treasurer of the Board of Directors for the Oregon Problem Gambling Council, and Provisional Graduate Faculty at Pacific University College of Health Professions. Dr. Marotta has a doctorate in Clinical Psychology from the University of Nevada, Reno and is a Internationally Certified Gambling Counselor - II.
Glenn Yamagata, MPhil
Vice President of Data Science and Economic Analysis, Senior Consultant
Glenn Yamagata has more than 26 years of experience in leveraging data to inform public policy and help companies effectively manage and utilize their data assets. He has spent the last 8 years working on problem gambling issues and has co-authored more than 15 presentations, reports, and papers. He has an MPhil. in Economics and an MA in Statistics from Yale University. He is on the Board of Directors of Voices of Problem Gambling Recovery, Inc.
Paige Vazquez, PhD
Research Scientist
Paige completed a PhD in clinical psychology from Pacific University in Hillsboro, OR in 2023 with an emphasis in Latino/x psychology, and is a clinical psychology resident.
Paige has worked in behavioral and cognitive research since 2018 and is particularly passionate about culturally responsive and community-engaged research methodology. She has worked with Dr. Marrota since 2021, assisting with and leading problem gambling research projects.
Ashley Greaves, PhD
Research Scientist
Ashley is a licensed clinical psychologist in the state of Oregon. She earned her PhD in clinical psychology from Pacific University in Hillsboro, OR in 2023.
Ashley has worked on several mixed-methods research projects, including NIH-funded studies, focused on improving health outcomes among underserved and high-risk populations such as Veterans, first responders, and individuals in primary care. Clinically, she has experience as a behavioral health consultant in integrated care settings. Ashley is committed to interdisciplinary collaboration and advancing culturally responsive, community-engaged research that bridges science and practice. She has worked with Dr. Marrota since 2024, assisting with and leading research projects on problem gambling.
Eric Chestolowski, MS
Research Assistant
Eric is a Research Assistant at PGS, Inc. and assists with a variety of problem gambling-related research projects. He is also currently working on his PhD in clinical psychology at Pacific University. He has several years of research experience across academic, medical, community, and correctional settings. Eric is passionate about using science to advance clinical practice with high-risk populations, and he is particularly interested in working with justice-involved individuals to prevent maladaptive behaviors and reduce the cycle of crime.
Ellie Bauer, MS
Research Assistant
Ellie is a research assistant with PGS, Inc and a doctoral student at Pacific University. Ellie has worked in cognitive and memory research for 5 years. She is particularly interested in investigating learning and memory in older adults. Clinically, Ellie is passionate about the diagnosis and treatment of Alzheimer's disease and related dementias.
Maira Lopez, BA, CADC-R, CGAC-R, QMHA-I
Research Assistant