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Natalie Matthews has over 15 years of experience in the field of homelessness, with a focus on direct service, system planning, database administration, and technical assistance and implementation (TA). Since joining Abt in 2009, Matthews has served in a variety of roles on its U.S. Department of Housing and Urban Development (HUD) Community Compass TA cooperative agreements. She’s also worked on several locally and U.S. Department of Veterans Affairs (VA)-funded TA projects, as well as research, monitoring and evaluation projects.  She served as the project director for the VA’s Supportive Services for Veteran Families (SSVF) monitoring project, served on the evaluation team for HUD’s first evaluation of rapid re-housing programs for families (2012), and led the evaluation of Hartford Connecticut’s homelessness prevention and rapid re-housing program (2014).

Dr. Heinrich Hock is an economist with 19 years of experience conducting research on labor, education, disability employment, and social insurance. His work focuses on producing results that help policymakers and program staff understand outcomes for priority populations and research-based options for improving outcomes. He develops rigorous and feasible plans for research designs, data collection and analysis, and dissemination of findings. Hock has led work on over a dozen labor-related projects for the U.S. Department of Labor (DOL) and other funders to assess the outcomes for groups such as dislocated workers, youth and adult jobseekers with disabilities, and veterans, among other groups. Hock also has played a key role in U.S. Department of Education (ED) studies to identify solutions for improving career outcomes among special education and adult education participants. 

Sarah Gibson is a project-management specialist with 23 years of experience in public policy research. She has more than 20 years of experience managing complex projects, implementing random assignment studies and researching and analyzing policy for clients such as the Social Security Administration and the Department of Housing and Urban Development. She is proficient in project management, including resource management, budgeting and quality control.

Debra Kemp Fleischer is a certified Project Management Professional (PMP) with 25 years of experience supporting federal programs. She applies her background in environmental science and policy with communications expertise to inform and engage stakeholders about regulatory and voluntary programs. She has led the development and implementation of multi-media communications strategies for a variety of audiences, including non-profit organizations, industry, environmental groups, and federal staff. She has experience with plain language writing, message development, and risk communication. 

Adam Schaefer has over 16 years’ experience developing and managing environmental epidemiology research and evaluation projects. He is an expert in the health impacts of environmental exposures and has worked on both national and international projects, focusing on infectious disease, toxicology, health surveillance, and One Health. Before coming to Abt, Schaefer was a researcher at Florida Atlantic University. He has published numerous epidemiological studies in peer-reviewed journals.

Bradford Lucas is an expert in international health and social marketing with more than 20 years of experience leading complex global health projects and managing large teams. His program experience includes malaria and child health, reproductive health, and HIV/AIDS, and he has worked in numerous countries in Africa, Asia, and Latin America. Throughout his career, Lucas has been recognized for his thought leadership and initiative in piloting, scaling up, and replicating new products, services, and approaches; improving processes; and disseminating best practices.

Joe Donahue is an environmental policy specialist and portfolio manager with more than 15 years of experience supporting governments in developing and implementing policies and programs focused on climate change, clean energy, ozone layer protection, and solid waste management. His work spans both domestic and international programs and initiatives. Technical areas of expertise include climate change mitigation strategies; international capacity building; greenhouse gas quantification methods; short-lived climate pollutants, especially methane, black carbon, and hydrofluorocarbons; and clean energy policies.

Radha Roy is a mixed-methods researcher and senior evaluation leader with over 16 years of experience designing and directing large-scale federal evaluations of workforce development, income support, and education programs.

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.