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Matthew Trombley has a Ph.D. in economics with concentrations in health and applied econometric methods. He has extensive experience designing and conducting evaluations for the Center for Medicare & Medicaid Innovation (CMMI), including analyses of historically underserved populations.

Tamara Daley has 20 years of behavioral health, disability, and social-policy project leadership and evaluation experience. She brings expertise from work with a variety of federal agencies, including Substance Abuse and Mental Health Services Administration (SAMHSA), National Institute of Mental Health, Department of Education, the Department of Health and Human Services’ Assistant Secretary for Planning and Evaluation, Social Security Administration, and Department of state. She also has worked with foundations, city governments, and universities. Daley designs and conducts research in behavioral health, from qualitative and mixed-methods studies and survey design to evaluability assessments.

Dr. Kerry Hofer has almost 20 years of experience conducting rigorous research in early childhood settings. Dr. Hofer has in-depth knowledge of large-scale childcare programs, including public state-run prekindergarten programs and Head Start/Early Head Start, as well as more informal care settings.  She has worked with early educational programs and staff across the country.  Dr. Hofer has been a key member on several large-scale projects funded by organizations such as the U.S. Department of Education and the National Institutes of Health, primarily focusing on analytic techniques with quantitative data. The majority of her research involves rigorous quantitative evaluations of early educational programs and practices targeted at children from impoverished families, focusing on program impact and model delivery.

Rosa Amboage is an environmental economist with 10 years of experience expanding markets for nature-based solutions (NbS) to achieve climate, economic and social progress. Working across academic, private, and public sectors, her expertise includes land use policy, NbS, environmental markets, green finance, and natural resource management.Amboage contributed to the UK’s post-Brexit agri-environmental policies and designed its first national scheme promoting a natural capital approach to economic and climate goals. Before Abt, she was the lead economist of the £640M GBP ($740M USD) Nature for Climate Fund, a national program to help industries and communities realize net-zero ambitions.

For media inquiries, please contact: All_Editorial@abtassoc.com Lindsey Freeze has worked in external affairs for nearly 20 years, leading brand, editorial, and advocacy strategies for global development organizations. She has produced multimedia coverage of health barriers and innovations in more than 30 countries. Her work with photojournalists, filmmakers, and issue experts has won awards and led to coverage in such news outlets as The New York Times, The Guardian, NPR, the BBC, The Telegraph, Devex, and other media worldwide.

Jodi Anthony, ScD, is a social epidemiologist with over two decades of mixed-methods evaluation, strategic consulting, and technical assistance experience focused on improving health for women, children, and families. Dr. Anthony brings expertise from her work with a variety of federal agencies, including Health Resources Services Administration (HRSA), Centers for Medicare & Medicaid Services (CMS), the Department of Health and Human Services’ Assistant Secretary for Planning and Evaluation and Office of Population Affairs. She also has worked with health systems, foundations, city and state governments, universities, and community coalitions.

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.

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.

Katharine Witgert is a health policy researcher with 20 years of public health and health care policy experience. Witgert manages research and analysis of health system innovations, conducting program evaluations for federal clients, including design, implementation, and reporting of findings. She provides technical assistance to state officials, primarily in the areas of Medicaid reforms and building Medicaid agency partnerships with public health, behavioral health, and social services programs.