Dr. Higley is the current President of the NCRP and is the Oregon State University (OSU) Distinguished Professor of Nuclear Science and Engineering. She recently served as the Interim Director for the Center for Quantitative Life Sciences at OSU, a genome-enabled and data-driven, high-performance computing research center in the life and environmental sciences. For more than a decade she was Head of the School of Nuclear Science and Engineering. Dr. Higley received her PhD and MS in Radiological Health Sciences from Colorado State University and her BA in Chemistry from Reed College. She has held Reactor Operator and Senior Reactor Operator's licenses and is a former Reactor Supervisor for the Reed College TRIGA reactor. Dr. Higley started her career as a Radioecologist for Portland General Electric. She later worked for the Pacific Northwest National Laboratory as a Senior Research Scientist in environmental health physics. Dr. Higley has been at Oregon State University since 1994, teaching undergraduate and graduate topics on radioecology, dosimetry, radiation protection, radiochemistry, and radiation biology. She previously served as Vice Chair of the International Commission on Radiological Protection's Committee 4 (Application of the Commission's Recommendations). She is a fellow of the Health Physics Society and a Certified Health Physicist.

is an Attending Physicist in the Departments of Medical Physics and Radiology at Memorial Sloan Kettering Cancer Center and serves at their Corporate Radiation Safety Officer. He serves as a member of the Nuclear and Radiation Studies Board of the National Academy of Sciences, Engineering and Medicine. He is a former Board member and current Council member of NCRP and is the Scientific Director of the Million Person Study. He has served as Chair or Co-Chair on several NCRP scientific committees associated with radiation protection of workers, patients, and members of the public. He served 7 y on the International Commission on Radiological Protection Committee 3, Radiation Protection in Medicine.

John D. Boice Jr is past President of the National Council on Radiation Protection and Measurements and Professor of Medicine at Vanderbilt University. He is an international authority on radiation effects and served on the Main Commission of the International Commission on Radiological Protection and on the United Nations Scientific Committee on the Effects of Atomic Radiation. He directs the Million Person Study of Low- Dose Health Effects.

Daniel Andresen is a professor of computer science at Kansas State University and director of the Institute for Computational Research. He received a bachelor’s degrees in computer science and mathematics from Westmont College in 1990, a master’s in computer science from California Polytechnic State University in 1992, and a doctorate in computer science in 1997 from the University of California, Santa Barbara. Upon completing his doctorate, he joined the faculty at K-State as an assistant professor.

He is a member of the Association for Computing Machinery, the IEEE Computer Society, the Electronic Frontier Foundation, the American Society for Engineering Education, and has been an XSEDE Campus Champion since 2011.

Armin Ansari is Director of the Center for Science and Technology at the EPA. Previously, he was the Radiological Assessment Team Lead at the Centers for Disease Control and Prevention (CDC) where he served as a subject matter expert in CDC’s radiation emergency preparedness and response activities. He is a fellow and past president of the Health Physics Society and an adjunct associate professor of nuclear and radiological engineering at Georgia Institute of Technology. He serves on the National Council on Radiation Protection and Measurements (NCRP), provides consultancy to the International Atomic Energy Agency (IAEA) and serves as member of the United States delegation to the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR).

Dr. Avtandilashvili is an Assistant Research Professor in the College of Pharmacy, Washington State University. She earned her Diploma with Honors (equivalent to MS) in Experimental Nuclear Physics from I. Javakhishvili Tbilisi State University (Republic of Georgia) and PhD in Health Physics from Idaho State University (ISU). Prior to her doctoral study, Dr. Avtandilashvili worked in the Physics Department of Tbilisi State University and was actively involved in a number of international research projects, including the International Atomic Energy Agency's (IAEA) Regional Project "Marine Environmental Assessment of the Black Sea Region"; the Advanced Accelerator Applications – Dose Conversion Coefficients project funded by the U.S. Department of Energy; the Tbilisi Radon Assessment Initiative supported by the U.S. Civil Research and Development Foundation; etc. In 1999, she was awarded an IAEA Fellowship in Germany.

Amir A. Bahadori is Associate Professor and Nuclear Engineering Program Director in the Alan Levin Department of Mechanical and Nuclear Engineering at Kansas State University. Dr. Bahadori has over 10 years of experience in radiation dosimetry and radiation risk models. He leads the Kansas State University effort on developing advanced computational tools to analyze very large datasets in support of the Million Person Study. Dr. Bahadori is certified in the comprehensive practice of health physics by the American Board of Health Physics and serves on the National Council on Radiation Protection and Measurements.

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Paul Blake is a civilian health physicist with the Defense Threat Reduction Agency (DTRA), Fort Belvoir, VA, USA. DTRA safeguards America and its allies from weapons of mass destruction by providing capabilities to reduce, eliminate, and counter the threat, and mitigate its effects. He co-leads the Nuclear Test Personnel Review Program, which confirms participation and reconstructs radiation doses for U.S. atomic veterans.

Steve Blattnig is currently at NASA Langley Research Center and has been working on a wide variety of different aspects of space radiation research for the last 20 years. He is one of the primary developers of the NASA Standard for Models and Simulations, NASA-STD-7009. More recently, his focus has been on the development of probabilistic risk methodology and radiation biology modeling for effects including acute radiation syndrome, cancer, cardiovascular disease, and degenerative central nervous system diseases. He was the project manager for the space radiation transport and measurement project and was the PI of the space radiation risk assessment project.

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Sarah S. Cohen is a Senior Managing Epidemiologist at EpidStrategies, a Division of ToxStrategies, where she directs observational research studies in the areas of pharmacoepidemiology, nutritional epidemiology, and occupational epidemiology as well as leads large data management projects and statistical analyses. She is an Adjunct Assistant Research Professor of Medicine in the Department of Medicine at Vanderbilt University School of Medicine. She has been a collaborator on the Million Person Study of Low-Dose Health Effects for nearly twenty years, providing analytic support as well as co-authoring numerous publications.

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Dr. Linh M. Duong works as an epidemiologist in the Department of Energy (DOE), Environment, Health, Safety and Security, Office of Domestic and International Studies (EHSS-13) where she is the Program Manager for the Million Person Study (MPS) and Comprehensive Epidemiologic Data Resource (CEDR).

Prior to joining the DOE, Dr. Duong, worked as an epidemiologist in the Clinical Epidemiology Research Center at the Department of Veterans Affairs where she designed and conducted independent epidemiological and health services research investigations including projects that focus on Gulf War Illness (GWI). She also held a dual role as an Associate Research Scientist in the Department of Psychiatry at Yale School of Medicine where she worked on GWI research projects to identify genetic variants and environmental exposures associated with the risk of developing GWI. She also has worked as a postdoctoral fellow at Vanderbilt University Medical Center (VUMC) in the Department of Epidemiology as part of the Molecular and Genetic Epidemiology of Cancer (MAGEC) Program where she researched associations between genetic, molecular, social, and behavioral risk factors for cancer risk.
Dr. Duong previously worked as a cancer epidemiologist at the US Centers for Disease Control and Prevention (CDC), as an Emerging Leader Fellow at the CDC and at the National Institutes of Health (NIH), National Cancer Institute (NCI), and as a Clinical Research Intern at Moffitt Cancer Center. She worked at the NIH, NCI Cancer Epidemiology Education in Special Populations (CEESP) as a fellow based in Hanoi, Vietnam, and as a contact tracer / biological administrator during the COVID-19 response for the Broward County Department of Public Health.
Her subject matter expertise includes national disease surveillance and outbreak response, domestic and international experience in epidemiologic research, experience analyzing data related to infectious (e.g., HIV/AIDS, Human Papilloma Virus, Hepatitis C Virus), chronic diseases (e.g., cancer, cardiovascular disease), and occupational health research.

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S. Robin Elgart serves as the Director of the Office of Domestic and International Health Studies at the Department of Energy. She received a bachelor’s degree in microbiology from the University of California at Santa Barbara and both her master’s degree and doctorate in biomedical physics from the University of California at Los Angeles. Dr. Elgart has over 20 years of research experience across multiple life-science disciplines, including environmental sciences, medical physics, and radiation biology. Prior to joining the Department of Energy in 2023, she served as the Element Scientist for the Space Radiation Element for NASA’s Human Research Program.
As the Director of Domestic and International Health Studies at the Department of Energy, Dr. Elgart is committed to improving the understanding of health outcomes associated with DOE operations to ensure appropriate protection for our workforce and the public.

Loren Lipworth, ScD, is a Research Professor of Medicine in the Division of Epidemiology, Department of Medicine at Vanderbilt University Medical Center. She is an epidemiologist investigating risk factors for cancer, cardiovascular disease and other chronic diseases in large, population-based epidemiologic cohort studies, with a focus on racial/ethnic, socioeconomic and other health disparities and on environmental exposures

Dr. Elizabeth (Betsy) Ellis, an Epidemiologist, has over 40 years of experience studying the effects of low-dose radiation on the US Department of Energy nuclear work force. In addition to being the lead on a number of studies, she was involved with building the relational database containing identifying, demographic, work history, vital status and cause of death information that forms the basis for inclusion of the 360,000 DOE workers in this study. Since retiring in 2022, she continues to participate as a technical advisor to the study. She provides epidemiologic subject matter expertise and technical historical context to the Department of Energy portion of the US Million Person Study.  From 2006-2020, Dr. Ellis served on the International Commission on Radiological Protection, Committee 2, Task Group 64 to evaluate cancer risks associated with exposure to alpha emitters. Her other interest is in protection of human subjects in research. She has been a member of Institutional Review Boards (IRB) since 1998. She has served as Chair of the Oak Ridge Site-wide IRB from 2001-2023 and currently serves as Vice Chair of that Board as well as Vice Chair of the DOE Central IRB since its inception in the early 2000s to the present.

Dr. French is a collaborative biostatistician and educator with expertise in analysis methods for longitudinal and survival data, the design and analysis of randomized trials, and the development and evaluation of prognostic models. His collaborative research projects have focused on cardiovascular disease research, cancer epidemiology, and health economics. He has served as an expert in radiation epidemiology and biostatistics on committees for the National Academies of Sciences, Engineering, and Medicine; the US Department of Energy; and the National Council for Radiation Protection and Measurements. He has been the statistical editor for JAMA Pediatrics since 2013.

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David Girardi is a scientific computer programmer at Oak Ridge Associated Universities. He has over 15 years programming experience working with epidemiologists and statisticians and has been working with the Million Person Study for over five years. He is a member of the Project Management Institute and has been a certified Project Management Professional (PMP) for over 5 years.

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Ashley P. Golden is a senior biostatistician and Director of ORISE Health Studies at Oak Ridge Associated Universities where she conducts multidisciplinary projects in occupational epidemiology, radiation exposure and dosimetry, medical surveillance, and environmental assessments. She has been a collaborator on the Million Person Study of Low-Dose Health Effects for eight years.

Dr. Grogran is President of Cascade Scientific, Inc., an environmental consulting firm. Dr. Grogan received her PhD from Imperial College of Science and Technology at the University of London in 1984 and has more than 25 y of experience in radioecology, environmental dose reconstruction, and the assessment of radioactive and nonradioactive hazardous wastes. She first worked at the Paul Scherrer Institute in Switzerland on the performance assessment of radioactive waste disposal for the Swiss National Cooperative for the Disposal of Radioactive Waste (Nagra). Dr. Grogan was actively involved in the early international cooperative efforts to test models designed to quantify the transfer and accumulation of radionuclides and other trace substances in the environment.

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Sara Howard is an epidemiologist at Oak Ridge Associated Universities where she participates in multiple research endeavors pertaining to both radiological and non-radiological exposures in mainly in occupational cohorts. Since joining the Million Person Study in 2019, she has contributed to the data capture and management, statistical analyses, and data visualization. Sara is also a PhD candidate the University of Tennessee in the Comparative and Experimental Medicine Program, which is an interdisciplinary program that promotes collaboration between multiple fields. Her training courses are primarily focused on chronic disease epidemiology, statistics, and machine learning.

Derek W. Jokisch is Professor of Physics and Chair of the Department of Physics and Engineering at Francis Marion University in Florence, South Carolina. He holds a Joint Faculty Appointment at ORNL within the CRPK and is a member of ICRP Committee 2 on Doses from Radiation Exposure and is a member of the U.S. Scientific Review Group for the Department of Energy’s Russian Health Studies program.

Laura M. Keohane is an associate professor in the Department of Health Policy at Vanderbilt University School of Medicine. Her research focuses on policies that promote better health outcomes and provide affordable services for beneficiaries with Medicare and Medicaid, especially those who face health care barriers due to frailty, disability, or limited socioeconomic resources. Dr. Keohane’s research has examined managed care alignment initiatives for dual-eligible beneficiaries, post-acute benefits in Medicare Advantage plans, Medicare spending for dual-eligible beneficiaries, and factors affecting Medicaid participation among Medicare beneficiaries. She currently leads a large federally funded research grant on Medicaid and Medicare policies that can support aging in place for older low-income adults with diabetes and dementia.

Dr. Keohane holds a PhD in health services research from Brown University and a MS in health policy and management from the Harvard School of Public Health.

Dr. Richard W. Leggett is a research scientist in the Environmental Sciences Division at Oak Ridge National Laboratory. His physiological systems models of the human circulation, skeleton, and gastrointestinal transfer and systemic biokinetic models for many elements are used by the International Commission on Radiological Protection as dosimetry and bioassay models.

Dr. Lima holds an MPH from Boston University with concentrations in social and behavior sciences and epidemiology/biostatistics and a PhD in sociology with a concentration in population studies from Brown University. She has been with Brown's Center for Gerontology and Health Care Research since 2002 and is the Center’s expert on data compliance and human subjects research regulatory matters. Dr. Lima leads the Regulatory and IRB team and is an Executive member of both the Ethics and Regulation and Technical Data Cores of the NIH IMPACT Collaboratory (impactcollaboratory.org), where she continues to build expertise in the unique ethical and regulatory issues related to embedded pragmatic clinical trials, particularly those that involve patients living with dementia and their care partners.

Dr. Martinez is an Associate Professor in the Department of Environmental Engineering and Earth Sciences at Clemson University in the United States. She also holds a Joint Faculty Appointment at Oak Ridge National Laboratory within the Center for Radiation Protection Knowledge.

She graduated from Texas A&M University with a BS degree in applied mathematical sciences, and thereafter became an officer in the US Navy where she was a nuclear power instructor and later a radiation health officer. Followed by a brief stint working in industry, Dr. Martinez attended graduate school at Colorado State University, where she received an MS and PhD in radiological health sciences, with emphasis in health physics and radioecology, respectively. While working on her doctorate, she spent about a year and a half as part of a research team at Savannah River National Laboratory.

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Dr. Kathleen Miller is an assistant professor in the Department of Health and Exercise Science. She earned her M.S. and Ph.D. in kinesiology from the University of Wisconsin-Madison, majoring in exercise physiology and minoring in neuroscience. After completing her Ph.D., Dr. Miller worked as a postdoctoral researcher in Hampton, Virginia, doing research funded by the NASA Human Research Program. Dr. Miller’s research interests are on the intersection between the cardiovascular system and the brain with an emphasis on the regulation of the cerebral circulation.

Michael T. Mumma is the Director of Information Technology at the International Epidemiology Field Station for Vanderbilt University Medical Center. He has over 20 years of experience in data analysis and conducting epidemiologic investigations. He has published on methodological topics, including geocoding and comprehensive radiation exposure assessment, and is currently developing methods to determining socioeconomic status based on residential history.

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Brian Quinn is a Medical Health Physicist at Memorial Sloan Kettering Cancer Center in New York. He has over 20 years of radiation protection experience in Medical Health Physics, radiological decommissioning and nuclear power. He has a Master’s degree in Applied Physics from Columbia University in New York, where he studied Medical Physics.

Dr. Caleigh Samuels is the Radiation Dosimetry Lead in the Center for Radiation Protection Knowledge at Oak Ridge National Laboratory. Her research in radiation dosimetry includes element-specific biokinetic model development, Monte Carlo applications in dosimetric and detector response modeling, development of radiological risk assessment tools, and dose reconstruction for internal emitters. Current focuses are on formulating models and methods to estimate organ doses from internal emitters for epidemiological studies of radiation workers, developing radiogenic cancer risk coefficients for public exposures, and simulating public and worker radiation doses associated with transportation of nuclear material and detonation of nuclear explosive devices. Dr. Samuels received her PhD in Nuclear Engineering and MS in Medical Physics from Georgia Institute of Technology, and her BS in Physics from Radford University. She is currently a member of ICRP Task Group 95 on Internal Dose Coefficients, the IAEA NORMEX working group and NCRP SC 6-13 on Methods and Models for Estimating Organ Doses from Intakes of Radium. She has been collaborating on the Million Person Study since 2019.

Kali S. Thomas is the Associate Director of Health Services Research in the Center for Equity in Aging. As a gerontologist, Dr. Thomas' research focuses on identifying ways to improve the quality of life of older adults needing long-term services and supports (LTSS) through applied health services research. With funding from the U.S. Department of Veterans Affairs, the Agency for Healthcare Research and Quality, the National Institute on Aging, the Patient-Centered Outcomes Research Institute, and multiple foundations, she has led research projects examining the organization, delivery, and financing of LTSS to meet older adults' medical and non-medical needs. Her research spans the LTSS continuum, ranging from in-home services to long-term care provided in institutional settings.

John E. Till is the founder and President of Risk Assessment Corporation with more than 40 years of experience in environmental dosimetry. He received the E.O Lawrence award from the Department of Energy in 1995 and delivered the L.S. Taylor lecture for the National Council on Radiation Protection and Measurements in 2013. He also served in the U.S. Navy Nuclear Submarine Program, retiring as a Rear Admiral in the US Naval Reserve in 1999

Sergei Y. Tolmachev is a Research Professor in the College of Pharmacy and Pharmaceutical Sciences, Washington State University, where he directs the United States Transuranium and Uranium Registries and the associated National Human Radiobiology Tissue Repository. He has over 20 years of experience in the development of analytical methods and in actinide analyses of environmental and biological samples. Dr. Tolmachev is currently a Council member of the NCRP and is vice-chair of NCRP Scientific Committee 6-12 ‘Development of Models for Brain Dosimetry for Internally Deposited Radionuclides’.

Linda Walsh is a specialist in radiation epidemiology and hold a higher doctorate (DSc - 2012, based on 50 publications) in radiation epidemiology and a doctorate (PhD - 1985) in physics from the University of Manchester, UK. Some highlights of Dr. Walsh's research include analyses of data on: the Life Span Study cohort of Japanese survivors of the World War II atomic-bomb attacks; thyroid cancer in areas affected by the 1986 Chernobyl accident; and the mortality follow-up of German "Wismut" uranium miners. Dr. Walsh is and has been involved in several EU-projects and national and international committees, including for WHO, UNSCEAR, ICRP, NCRP, SSK and ESA, and currently hold several consultancy contracts.

R. Craig Yoder directed the technical activities and programs at Landauer, Inc. from 1983 through his retirement in 2015. In this capacity he influenced the technologies and measurement protocols used by the Company as it delivered dosimetry services around the world. He currently is using his historical knowledge to advise the MPS epidemiologists regarding the methods to translate personal monitoring information into mean absorbed doses to various organs. He is a Council member of the National Council on Radiation Protection.

Joey Y. Zhou is a senior epidemiologist in the Office of Health and Safety under the Office of Environment, Health, Safety and Security. He is the past DOE program manager for the agency’s participation in the Study of One Million U.S. Radiation Workers and Veterans. He also serves as the program manager for the United States Transuranium and Uranium Registries, the Russian Health Studies Program and the Radiation Emergency Assistance Center/Training Site. He has more than twenty years of scientific research and technical program management experience in the U.S. federal government. Prior to DOE, he worked at the Department of Defense, the Environmental Protection Agency, and the Department of Housing and Urban Development.