Each TriWest Group consultant brings a range of experience in human services, individual specializations and personal life experiences to the team. Through our work as clinical psychologists, project directors, program managers, treatment coordinators, teachers and consultants, we are directly familiar with the challenges facing today's systems. Our Colorado-based support staff provides a central location for our endeavors and strives to provide personable customer-based service.
Tonya Aultman-Bettridge is a TriWest Senior Consultant with significant experience in research and evaluation in the areas of juvenile justice, youth crime, school violence, and delinquency. Prior to joining TriWest, she served as the Senior Research Analyst for the Colorado Division of Youth Corrections, as Research Project Director at the Center for the Study and Prevention of Violence at the University of Colorado, and as a faculty member at the University of Colorado at Denver School of Public Affairs. Tonya holds a Master of Criminal Justice degree and a doctoral degree in public affairs from the University of Colorado at Denver.
David Bartsch is a TriWest Senior Consultant with extensive experience in service system research and program evaluation. He has directed quantitative studies of mental health, criminal and juvenile justice system programs, and system reform efforts. David’s primary emphases include research methods, large-scale databases, and quantitative analyses. He received his doctoral degree in psychology from the University of Montana, and has served as Director of Decision Support Services for Colorado Mental Health Services, Director of Quality at Jefferson Center for Mental Health, and an evaluator of juvenile and criminal justice programs in the Office of the Arizona Supreme Court.
Deb Evans is TriWest Group's Operations Manager. Before joining TriWest Group, she was a staff associate at the Western Interstate Commission for Higher Education (WICHE) Mental Health Program. In addition to operating an independent bookstore business in Boulder, Colorado for several years, Deb has over 30 years of experience in public- and private-sector business management and program administration in the areas of higher education, human services, and publishing. She received a master's degree in cultural anthropology from the Graduate Faculty of Political and Social Science at the New School for Social Research in New York.
Andrew Keller is a TriWest Group Partner. He has provided consultation and conducted evaluation for numerous human service systems, including mental health (state Medicaid mental health reforms, state psychiatric hospitals), child welfare, and local systems of care. Andy has extensive experience in qualitative methods, especially stakeholder focus groups, is a licensed psychologist in Colorado and Michigan and has clinical service and administrative experience with intensive community-based and other services for children, families, adults, and older adults. He has particular expertise in services for adults with serious mental illness, including assertive community treatment and psychosocial rehabilitation services. He received his doctoral degree in clinical and community psychology from the University of Maryland at College Park and is a former post-doctoral fellow, senior fellow, and faculty member in the Department of Psychiatry at the University of Colorado Health Sciences Center.
Suki Martinez-Parham is a Senior TriWest Project Consultant with broad experience in children's mental health and specialized training in the area of Early Intervention. In addition to her experience in clinical supervision and program development and implementation, Suki has served in direct care roles, is a Licensed Professional Counselor in the State of Texas, and holds a Master of Education degree in guidance and counseling from the University of Texas at El Paso. She is bilingual in English and Spanish.
Margo Miller is a TriWest Consultant with a range of experience in administrative and educational support positions as well as service on the Yakima County Systems of Care Social Marketing Committee. Since September of 2009, Margo has also been facilitating support groups for women with a background of domestic, emotional, physical, or sexual violence to provide support and promote healing. In 2008 she was certified as a presenter for the Adverse Childhood Experiences study to present the study findings as scheduled. She holds a Master of Arts in Organizational Leadership from Gonzaga University.
Stephanie Schum is TriWest Group’s Operations Assistant. Stephanie is a graduate of Metro State College of Denver with several years of experience in bookkeeping, office management and project support roles for non-profit and business organizations. She also has started and managed her own business as an independent bookkeeper. Stephanie is fluent in French and proficient in Spanish.
Peter Selby is a TriWest Group Partner. His experience has been focused on services, service systems and communities of care for children, youth and families. He has addressed human service issues as an administrator, consultant and evaluator across a range of institutional and community-based settings in juvenile justice, mental health and child welfare. Peter has specific expertise in fidelity-based approaches to evaluating and implementing evidence-based interventions (such as Multisystemic Therapy, Dialectical Behavior Therapy, and wraparound approaches). With TriWest Group, he provides consultation around evaluation, program development and training with government and community-based agencies and foundations. His recent work has emphasized community and inter-agency collaboration and coalition building. Dr. Selby is a licensed psychologist in Washington and is a former academic and current clinical faculty member in the Department of Psychiatry at the University of Washington. He received his doctoral degree in clinical and community psychology from the University of Maryland at College Park.
Bill Wilson is a TriWest Consultant who brings over 20 years of experience as a clinician, supervisor, and administrator in child welfare and addiction treatment settings. He has had particular clinical and administrative experience with home-based family preservation programs, including outreach family counseling, Family Group Decision Making, and Families First. In addition, Bill has served in program development and quality improvement roles throughout his career. He is a Licensed Master Social Worker in the State of Michigan, a member of the Academy of Certified Social Workers, and holds a Master of Social Work degree from the University of Michigan.
James Zahniser is a TriWest Principal whose work focuses on project evaluation and community assessment, with particular expertise in services for adults and youth with serious mental illness, consumer-driven services, primary and behavioral health care integration, and evidence-based practices, such as integrated dual disorders treatment, assertive community treatment and psychosocial rehabilitation. Over the past 20 years, he has provided independent human services consulting to a variety of state, county and local organizations. In 2005 he consulted with Paraguay’s President, First Lady and Director of Mental Health on the development of hospital-community linkages and community-based services. Dr. Zahniser currently is involved in a National Training Initiative through Pathways to Promise, in which he is helping evaluate models of public-private, inter-faith partnerships for supporting people with mental illnesses. Between 2001 and 2010, Jim held a faculty position as Associate Professor of Psychology at Greenville College. Dr. Zahniser, a licensed psychologist, received his doctoral degree in clinical and community psychology from the University of Maryland at College Park.
