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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.

Sean McClellan, Ph.D. is a mixed-methods researcher with over a decade of experience in full cycle health services research. He has experience managing research projects, developing analytic designs, cleaning and analyzing administrative data, fielding rigorous surveys, conducting qualitative interviews, and communicating findings in plain language.

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.

Dr. Caroline Logan is a senior associate and health services researcher with over 15 years of experience in policy-focused mixed methods evaluation design, rigorous data collection and analysis, and development of integrated mixed methods reports and deliverables. Her expertise in federal and state health policy includes Medicare and Medicaid financing and delivery systems, care transformation and system integration, maternal health, the health and well-being of children, and the intersection of health and housing.

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). 

Kristie McKinley is a federal IT and business development leader with more than 33 years of experience supporting the U.S. Department of Agriculture (USDA).

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.

T.J. Pepping is an environmental scientist with 13 years of experience working in the intersection of data analysis and communication, helping clients interpret environmental data and share important information with the public. 

Lori Hunter is a Project Management Professional and a Certified Scrum Master with 20 years of experience working in systems analysis, functional requirements analysis, user-centered design and user experience, database administration and design, and web design and development. Her projects and experience represent a range of complexities, including administrative and evaluation data collection and reporting systems analysis and visualization, clearinghouses, websites, technical assistance tracking, evaluation data collection, interactive online tools and libraries, communities of practice, and Section 508 compliance. She has been the lead project manager for several large CMMI-3 IT implementations. Her responsibilities have included directing project team personnel; managing scope, schedule, budget, and risk; ensuring contract compliance; and serving as the interface with the customer and customer stakeholders.