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Ernest Fletcher is an international development professional with 15 years’ experience in the planning, implementation, and management of education and public health programs. He has a special interest in program design, implementation, and monitoring and evaluation and capacity building. He has worked in Ghana and Mozambique and provided remote vector control program implementation support to countries including Senegal, Madagascar, Burkina Faso, and Sierra Leone. He has worked closely with Ministry of Education (Ghana) and Ministry of Health staff in several countries.

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.

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.

Dr. Michael Plotzke is a senior health economist with expertise in the area of Medicare payment policy, the organization of healthcare providers and quality measurement. His work typically involves the analysis of large datasets such as Medicare claims, assessment and enrollment data. Dr. Plotzke serves as principal investigator for multiple projects with the Centers for Medicare & Medicaid Services.  On the “Home Health Prospective Payment System and Hospice: Analysis Support and Monitoring” project, Dr. Plotzke leads a team of researchers in analyzing trends in Medicare hospice and home health usage and constructing large-scale payment reform options for both benefits.  Dr. Plotzke also leads the “Evaluation of the Medicare Care Choices Model” project that evaluates a new payment model for end-of-life care that is being tested with 141 hospice providers.  This project involves analysis of existing administrative data and collection of new data through surveys of caregivers, surveys of hospice providers and in-depth case studies of hospice providers participating in the model.

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.

Alan White is a nationally renowned health economist, highly respected for his rapid response to clients’ complex information and research needs with data-driven, creative solutions. As the senior health economist for the Health Policy Practice, he leads high-profile projects and guides the practice’s health economists.

Lauren Pittenger comes to Abt with more than 20 years of experience working in or as a consultant to federal government agencies. She has strong grounding in research and research-based consulting to government clients. She also has extensive experience leading and growing business, managing technical and scientific projects, and coaching and supporting account teams. She has served as a director at Guidehouse, scientific program manager at Booz Allen Hamilton, and lab manager at the U.S. Department of Agriculture. She has worked with the Centers for Disease Control and Prevention (CDC), Food and Drug Administration (FDA), the Canadian Public Health Laboratory Network, the Gates Foundation and the Association of Public Health Laboratories.

Allison Dymnicki has 19 years of experience in designing, directing, and conducting research, evaluation, and technical assistance projects aimed at promoting youth development, behavioral health, and wellbeing, with a particular focus on school, community, and out-of-school settings. She is deeply committed to promoting positive outcomes for all youth. She has partnered with federal agencies like the National Institute of Justice, Centers for Disease Control and Prevention, Assistant Secretary for Planning and Evaluation, and the Department of Education, as well as foundations, state and local educational agencies, and non-profit organizations. Much of her work focuses on developing researcher practitioner partnerships intended to elevate various perspectives, practitioner viewpoints, and youth voices. 

Mariandrea Chamorro has 20 years of experience managing international development programs. She has provided oversight for the high-quality and compliant execution of large flagship USAID programs while contributing to business development. Chamorro’s areas of expertise include prevention of vector-borne diseases, infectious diseases, maternal and child health, and health systems strengthening. Her clients have included the U.S. Agency for International Development (USAID), the Australian Department of Foreign Affairs and Trade (DFAT), and the UK’s Foreign Commonwealth & Development Office (FCDO). 

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.