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Anika Vartan has more than 20 years of experience designing, implementing, and evaluating public health and international development programs to improve access to—and quality of—health care, and increase community participation in social, economic, and political life. Vartan’s expertise is in mixed-methods and qualitative research, project management, health policy analysis, capacity building, adult education and technical assistance, organizational assessment and development, and community-driven development. She has supported the Administration for Community Living (ACL), Agency for Healthcare Research and Quality (AHRQ), Centers for Disease Control and Prevention (CDC), Centers for Medicare and Medicaid Services (CMS), Federal Drug Administration (FDA), Health Resources and Services Administration (HRSA), United States Agency for International Development (USAID), and Department of State (DOS) clients.

Dr. Reerink has more than 25 years of experience in promoting gender equality and social inclusion in international development, with a strong focus on the Asia-Pacific region.

Lauren Olsho is a senior health economist and evaluator with expertise in random assignment, quasi-experimental evaluation methods, economic modeling methodology, and advanced statistical and econometric analysis.Olsho’s primary research interests are in health, nutrition and health behaviors in vulnerable populations – including the elderly, the poor, program participants, minorities, arrestees and at-risk youth.Olsho recently served as principal investigator on a cluster random assignment evaluation of the Agency for Healthcare Research & Quality On-Time Falls Prevention Initiative, a clinical decision support intervention to reduce falls in long-term care settings.

Julio Pacca is a psychologist and innovative leader with more than 20 years of experience in health care. He focuses on HIV and AIDS; maternal health; adolescent health; and health systems strengthening. Pacca has worked with donors such as the US Agency for International Development (USAID), the Centers for Disease Control and Prevention, the United Nations, the World Bank, bi-lateral Scandinavian donors, and the William and Flora Hewlett, Goldman, and Bill and Melinda Gates foundations.

Robin Koralek is a seasoned evaluator and project director with over 30 years of experience in evaluating federal and state social welfare programs. Her expertise spans areas such as food assistance, employment and training cash assistance, and barriers to employment, including for those recovering from substance use disorders. She has worked with various governmental and non-profit organizations, focusing on program design, implementation, and outcomes.

Leonard M. Hicks, whose 20+ years of experience in business operations and financial management includes leading large-scale growth and transformation for Lockheed Martin and the Mission Essential Group, is Abt Global’s chief financial officer and a member of the executive management team. He is a proven entrepreneur who brings best-in-class leadership and collaborative approaches to problem solving.

Didar Ali Didar is technical advisor for monitoring, evaluation, research, and learning (MERL) in Abt’s International Technical Practice (ITP). He has more than 10 years of experience in MERL, project design, and management in the areas of agriculture, food security, economic inclusion, civil society, governance, health, and education. He also has experience in women’s rights advocacy, including designing and implementing advocacy plans and organizing national and international events.

Andrew Alderdice is an experienced health and human services leader with more than 35 years’ experience across Australia, New Zealand and the Pacific. He is currently Abt Global’s Country Manager for Papua New Guinea (PNG).

Catherine Hersey, a senior associate, is a seasoned health services researcher and project manager with over 15 years of experience in both Medicare and Medicaid. Her research areas include the implementation and evaluation of accountable care organizations and other alternative payment models, maternal health, substance use disorder, meaningful use of electronic health records, and hospital-acquired infections. Hersey also has experience in quality measurement and improvement. In addition, she has experience in both quantitative and qualitative analyses and managing large and complex projects.