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Sarah Prezek is a senior program and project management professional with more than 10 years of experience managing complex federal programs, multidisciplinary teams, and large project portfolios.

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.

Geoff Scahill has over 20 years of experience working in and managing international development programs. He has worked extensively within Papua New Guinea (PNG) and the Pacific – predominantly in Indonesia, Fiji, Samoa, and the Solomon Islands. He brings a long history as a health sector professional and has held roles as a health management advisor and health systems adviser in Pacific Island Countries. Geoff draws on his background in finance and economics to work with counterparts to increase efficiencies within the programs Abt Global delivers.

Sanjoti Parekh has 20 years of experience serving in leadership, management, and advisory roles in the Australian healthcare industry. Prior to that she worked as a clinician for five years. With expertise in public health, epidemiology, and primary care, she leads policy and program reviews, rapid and systematic literature reviews, health services planning, and development of population health strategies. In addition, Sanjoti oversees outcome and impact evaluations, post-implementation reviews, and quality-improvement, governance, and research programs.

TJ Shumard is a senior business development executive with two decades of experience advancing priorities for the Centers for Medicare & Medicaid Services (CMS) and state Medicaid priorities. He specializes in pipeline development, capture strategy, and digital modernization across Medicare and Medicaid. Shumard brings deep knowledge of federal procurement, CMS data platforms, and program oversight, with a strong record of shaping complex federal opportunities.

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.

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).

Kelly Wagner has over 25 years of experience designing and delivering technical assistance, training, and capacity building. A skilled public health professional trained in epidemiology, she has developed and led more than 10 national TA programs for federal awardees from various agencies including the Substance Abuse and Mental Health Services Administration (SAMHSA), the Health Resources and Services Administration (HRSA), and offices within the Department of Health and Human Services Office of the Assistant Secretary for Health (OASH). Wagner has worked with community-based organizations, health centers, academic institutions, and state/local health agencies, reaching target audiences with unique and diverse public health needs across the lifespan. 

Tenly Snow is a senior digital solutions specialist with 15 years of expertise in digital transformation, supply chain management, and strategic solutioning. Her extensive collaborations span governmental, private sector, and non-profit organizations across the Middle East, Asia, Africa, and Europe. Through her work with USAID, the Bill and Melinda Gates Foundation, and the World Bank, Snow has spearheaded innovations in software development and digital health, significantly enhancing health system resilience and pandemic preparedness on a global scale.