Administrative Committees

has extensive experience as a project manager, task leader, and individual contributor covering a broad range of health physics and nuclear engineering topics. He received his BS and MS degrees in Nuclear Engineering from Kansas State University. Mr. Kennedy has been involved in the development of environmental pathway and radiation dosimetry models used to assess potential health and environmental impacts that resulted from releases of radionuclides to the environment.

He specializes in the use of these models in environmental dose reconstruction, radioactive materials transport, radioactive waste disposal, and evaluation of nuclear facility operating practices. Over the past 37 y, Mr. Kennedy has led and contributed to a variety of projects for the U.S. Nuclear Regulatory Commission, the U.S. Department of Energy, the Electric Power Research Institute, and private industry. He has been involved with development of the technical basis for revised standards and regulations, and serves as the chair of ANSI/HPS N13.12, Surface and volume Radioactivity Standards for Clearance. He served as a consultant to the International Atomic Energy Agency (IAEA), Vienna, Austria, and was a member of the IAEA Advisory Groups to evaluate the Derivation of Exempt Quantities for Application to Terrestrial Waste Disposal and Derivation of Exempt Quantities for Recycle of Materials from Nuclear Facilities.

He was an invited lecturer for IAEA training courses on Management of Radioactive Waste from Nuclear Power Plants at Argonne National Laboratory; on Safety Assessment Modeling for Low and Intermediate Radwastes in Rio de Janeiro, Brazil and in Cairo, Egypt; and on Environmental Monitoring in Kiev, Ukraine. In 1990, he received the Health Physics Society's (HPS) prestigious Elda E. Anderson Award. He served as a member of the HPS Board of Directors from 1998 through 2001 and was selected as a fellow of the society in 2002. He was a member of the U.S. delegation to the 10th Congress of the International Radiation Protection Association in Hiroshima, Japan.

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.

Validation of computer models developed to predict the fate and transport of radionuclides in the environment remains a key interest of hers. In 1989 Dr. Grogan returned to the United Kingdom as a senior consultant to Intera Information Technologies before moving to the United States a few years later, where she has worked closely with Risk Assessment Corporation managing the technical aspects of a wide variety of projects that tend to focus on public health risk from environmental exposure to chemicals and radionuclides. Dr. Grogan has served on committees for the National Academy of Sciences, the International Atomic Energy Agency, the U.S. Environment Protection Agency, and NCRP. She co-edited the text book Radiological Risk Assessment and Environmental Analysis published by Oxford University Press in July 2008, and authored the chapter on Model Validation.

has over 42 y of experience in radiation protection at power reactors, which has included over 25 y in program management and oversight. Prior to retirement he was the corporate radiation protection manager of the largest fleet of nuclear power plants in the United States. He is currently Senior Director of Radiation Protection for CN Associates. In this role, he has written several technical reports for the Electric Power Research Institute, provides consulting services for several sites in decommissioning and operational radiation protection programs at nuclear power plants.

He holds a bachelor’s degree in radiation protection. He is a certified health physicist, a registered radiation protection technologist, and held a senior reactor operator certification.

Mr. Harris has served on the Council since 2017 and is a member Program Area Committee 2 and the budget committee. He has been a member of the Health Physics Society since 1990. He is currently the Secretary for the AAHP Executive committee.

has a BS degree from Virginia Polytechnic Institute and State University and a Master’s degree from San Jose State University. She has been comprehensively certified by the American Board of Health Physics since 1989.

Ms. Shingleton has been an NCRP Council member since 2017, having previously assisted in writing reports under Program Area Committees (PACs) 6 and 2. She is currently a member of PAC 2 and has been a member of the Budget and Finance Committee since 2018.

Ms. Shingleton retired from Lawrence Livermore National Laboratory in 2017, having served 38 y in a variety of roles in the Radiation Safety Program. During her career, Ms. Shingleton also served as secretary and president of the American Academy of Health Physics, as a member of the American Board of Health Physics Part I and II exam panels, and as treasurer and member-at-large for the Health Physics Society (HPS). In 2008 she named a Fellow of HPS.

directed Landauer's technical activities relating to radiation dosimetry, particularly for applications in radiation protection from 1983 through his retirement in 2015. Additionally, he oversaw subsidiary and partner businesses located in Australia, Brazil, China, France, Mexico, Japan, Sweden and Turkey.

An internationally known expert in radiation monitoring, Dr. Yoder led Landauer's transition from film and thermoluminescent dosimetry technology to optically stimulated luminescence, an assignment that required strategic planning and direction in areas spanning scientific research, product development, manufacturing, laboratory operations and marketing. From 1993 to 2001, he was Vice President of Operations and managed Landauer's manufacturing and analytical laboratory activities in addition to overseeing research and development programs.

Dr. Yoder is a member of NCRP and former President of the Council on Ionizing Radiation Measurements and Standards. He has served on several national and international committees to develop dosimetry standards. He was a member of a National Research Council committee that examined the accuracy of film badge measurements made during atmospheric nuclear weapons testing.

Dr. Yoder earned his MS and PhD degrees in Bionucleonics at Purdue University and received a BS in Pre-Medicine from Davidson College. He also completed the Executive Program at Stanford University. He is Certified in Comprehensive Health Physics by the American Board of Health Physics.

retired from the U.S. Environmental Protection Agency (EPA) in 2022 after 34 y. While at EPA, he managed the development of radiation dose and risk assessment guidance and provided technical support for radiation protection policy issues. Mr. Boyd serves on the NCRP’s PAC 5 and is currently a member of the NCRP Board of Directors. From 2015 until September 2020, he chaired the Organisation for Economic Cooperation and Development/Nuclear Energy Agency’s Committee on Radiological Protection and Public Health. He is a past member of the International Commission on Radiological Protection (ICRP) Committee 4 and chairs ICRP Task Group 98 on Application of the Commission’s Recommendations to Exposures Resulting from Contaminated Sites. In 2020, Mr. Boyd received the U.S. Health Physics Society’s (HPS) Distinguished Public Service Award and was a member of the HPS Board of Directors from 2021 to 2024. He has a BS in Biology and MS in Public Health from the University of North Carolina at Chapel Hill.

is an Attending Epidemiologist at the Memorial Sloan-Kettering Cancer Center (MSKCC) in New York City. Her core research focus is on breast cancer and gliomas and on understanding cancer risk and progression in order to identify those at highest risk because of gene carrier status, environmental exposures, or a combination of both. Dr. Bernstein is the Principle Investigator of the National Cancer Institute (NCI)-funded international 24-center Women's Environmental Cancer Radiation and Epidemiologic (WECARE) Study which was specifically designed to examine the interaction of radiation exposure and genetic predisposition in breast cancer, especially radiation-associated contralateral breast cancer (CBC) among 3,700 women with CBC and unilateral breast cancer. The WECARE Study has served as the source population for studies of candidate genes such as BRCA1, BRCA2, CHEK2, and ATM, candidate gene pathways of DNA damage response involved in radiation-induced double-strand break repair—ATM, CHEK2, P53 binding protein (53BPI), and MDC1, Mre11, Rad50, and Nbs1 (e.g., MRN nuclease complex), a genome-wide association study, and most recently mammographic density. The global hypothesis across these studies is that women who carry certain types of mutations will be more susceptible to breast cancer than noncarriers, and possibly to radiation-associated breast cancer.

Dr. Bernstein currently serves as a member of the Board of Directors of the American College of Epidemiology, the External Advisory group for the NCI-sponsored Breast Cancer Family Registry, the National Council on Radiation Protection and Measurements, and most recently the NCI Board of Scientific Counselors-Clinical Sciences and Epidemiology. For the past two years, she has served on the Organizing Committee of the American Statistical Association Conference on Radiation and Health (2012 and 2014 meetings), and was Co-Chair of the Third North American Congress of Epidemiology, held in June 2011 for which she was honored by the 2012 ACE Award for Leadership and Service in Epidemiology. Dr. Bernstein holds a PhD in Epidemiology from Yale University, an MS in Applied Biometry from the University of Southern California, and an AB from Brown University. Before joining the faculty at MSKCC, she was Deputy Director of the Division of Epidemiology at Mount Sinai School of Medicine.

is Professor of Radiology at the University of California (UC) Davis School of Medicine in Sacramento, California. He received a PhD in Radiological Sciences from UC Irvine in 1982, specializing in quantitative digital fluoroscopic imaging. Directly thereafter, he took a faculty position at UC Davis Medical Center, pursuing digital imaging research, physics education efforts for graduate students and radiology residents, as well as quality control for medical imaging equipment in Diagnostic Radiology. He has continuing academic interests in digital mammography, computed tomography, interventional radiology, imaging informatics, and radiation dose tracking, assessment, and reporting. Former president of the American Association of Physicists in Medicine (AAPM) in 2011 and current Governor of the American Board of Radiology, Dr. Seibert has served and continues to interact with many professional committees in regards to medical imaging issues and presenting technical / educational events for the AAPM, International Atomic Energy Agency, and other professional societies. For NCRP, he is a member of Program Area Committee 4. As a co-author of The Essential Physics of Medical Imaging textbook for diagnostic physics education, Dr. Seibert continues with the development of cutting edge imaging technologies and medical physics education to improve the state of imaging science for the betterment of patient care.

is a biologist at the U.S. Food and Drug Administration’s (FDA) Center for Devices and Radiological Health where she reviews medical devices involved in radiation therapy to ensure their safe and effective use. She is also involved in FDA working groups related to medical countermeasures against radiation exposure. Prior to joining the FDA, Dr. Sullivan was an American Association for the Advancement of Science (AAAS) Science and Technology Policy Fellow and contractor in the U.S. Department of Health and Human Services’ Office of Emergency Management under the Assistant Secretary for Preparedness and Response. There, she helped develop nationwide response plans for radiological and nuclear incidents and focused on the operational needs for the use of biodosimetry. Prior to working for the government, Dr. Sullivan was a post-doctoral associate at Duke University where her research focused on elucidating the role of p53 in the hematopoietic and gastrointestinal Acute Radiation Syndromes. Dr. Sullivan received her BS in Chemistry from the State University of New York Geneseo and her PhD in Biological Chemistry from the University of North Carolina at Chapel Hill.

worked at Los Alamos National Laboratory as a health physicist and scientist for over 30 y. He received an MS in Health Physics and a PhD in Environmental and Radiological Health Science from Colorado State University and is certified by the American Board of Health Physics. Dr. Whicker is an elected Board Member of NCRP, served as a Board Member of the Health Physics Society, consulted for the International Atomic Energy Agency since 2018 on environmental sampling and remediation decisions, and was on the Editorial Board for the journal Radiation Protection Dosimetry for 8 y. He has been the recipient of numerous achievement awards including the U.S. Department of Energy Secretary’s Honor Award (2020). He is an author or co-author of hundreds of scientific publications, invited talks, book chapters, and presentations mostly on indoor and outdoor radiological air quality and measurements that span issues ranging from worker protection, homeland security, radiological dose and risk assessment for the public and the environment, and environmental quality. His research in outdoor air quality focused on aerosol transport through wind-driven suspension of contaminated soil and the effects of ecosystem disturbance on environmental transport rates. This research has broad implications for both public and ecosystem health.

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.

is Associate Professor in the Alan Levin Department of Mechanical and Nuclear Engineering at Kansas State University (KSU). He is a Steve Hsu Keystone Research Faculty Scholar, holds the Hal and Mary Siegele Professorship in Engineering, and directs the Radiological Engineering Analysis Laboratory at KSU. Dr. Bahadori earned BS degrees in Mechanical Engineering with Nuclear Engineering Option and Mathematics from KSU in 2008, the MS degree in nuclear engineering sciences (medical physics concentration) from the University of Florida (UF) in 2010, and the PhD degree in biomedical engineering (medical physics concentration) from UF in 2012. From 2010 to 2015, Dr. Bahadori worked at NASA Lyndon B. Johnson Space Center on issues related to astronaut radiation health with emphasis on computational dosimetry, radiation risk assessment, and space radiation detection using Timepix-based semiconductor radiation detectors. In 2015, he began as an assistant professor at KSU, earning tenure and promotion to associate professor in 2021. Dr. Bahadori’s research program is focused on characterization of radiation environments, understanding the response of humans and electronics to radiation exposure using experimental and computational techniques, and radiation imaging. He has been certified in the comprehensive practice of health physics by the American Board of Health Physics since 2015. Dr. Bahadori has served in leadership roles in the American Nuclear Society (ANS) and International Radiation Physics Society. He has been awarded an ANS Presidential Citation, ANS Radiation Protection and Shielding Division Outstanding Service Award, three NASA Group Achievement Awards, and the 2018 Zeldovich Medal for Scientific Commission F.

is employed at the Memorial Sloan Kettering Cancer Center and is an expert at applying high-performance radiation transport and internal kinetics algorithms to analyses that support patient, epidemiologic, and occupational radiation safety research and excellence.

In addition to his ongoing expert dosimetric support of the NCRP Million Person Study on occupational radiation epidemiology, this Georgia Tech graduate has significant radiation protection professional service and affiliations. He serves as a consultant to the International Commission on Radiation Units and Measurements Report Committee 26 (operational radiation protection quantities for external radiation), a corresponding member on the International Commission on Radiological Protection Task Group 90 (age-dependent dose coefficients for external exposures to environmental sources), and a member on the American Nuclear Society Radiation Protection and Shielding Division subcommittees.

Beyond his technical publications in the peer-reviewed literature, Dr. Bellamy has produced numerous federal agency reports [including for the U.S. Environmental Protection Agency (EPA)-Office of Radiation and Indoor Air, U.S. Nuclear Regulatory Commission, Centers for Disease Control and Prevention, EPA-SUPERFUND, and U.S. Department of Energy]. During his time at Oak Ridge National Laboratory (Center for Radiation Protection Knowledge) he worked on cancer risk estimates following inhalation or ingestion of radioactive materials, dose coefficients for external exposure from environmentally distributed radionuclides, dose-rate and dose associated with exposure to patients treated with 131I, neutron dose to the lens of the eye, as well as models and calculations on the relative biological effectiveness of low-energy electrons, photons, and radionuclides, and on other relevant topics of importance for the profession of radiation protection.

is the Deputy Director of the U.S. Environmental Protection Agency's (EPA) Office of Web Communications. Formerly in EPA’s Center for Radiation Information and Outreach, Ms. Shogren has spent the majority of her career collaborating on radiation risk communication and radiation data visualization projects. Ms. Shogren supported EPA's communication efforts during the 2011 Fukushima Daiichi nuclear accident and has facilitated international panels on radiation risk communication in pediatric medical imaging, with a focus on patient advocacy and effective communication methods. Ms. Shogren was a key member of the expert working group led by the World Health Organization that developed the 2016 practical reference document, Communicating Radiation Risk in Paediatric Medical Imaging: Information to Support Healthcare Discussions About Benefit and Risk.

is Professor of Biomedical Engineering and Medical Physics in the J. Crayton Pruitt Family Department of Biomedical Engineering at the University of Florida (UF). He serves as Director of the Advanced Laboratory for Radiation Dosimetry Studies at UF. Dr. Bolch earned his BSE degree in environmental engineering in 1984, his ME and PhD degrees in radiological physics in 1986 and 1998, respectively, from the University of Florida. He has been certified by the American Board of Health Physics since 1994 and licensed in Radiological Health Engineering by the Texas Board of Professional Engineers since 1992. In 2011, Dr. Bolch was elected Fellow of both the Health Physics Society and the American Association of Physicists in Medicine. He has been a member of the Society of Nuclear Medicine’s Medical Internal Radiation Dose (MIRD) Committee since 1993, a member of NCRP since 2005, and a member of Committee 2 of the International Commission on Radiological Protection (ICRP) since 2005. Within the latter, he serves as C2 Secretary and Leader of the ICRP Task Group on Computational Phantoms and Radiation Transport. He has published over 200 peer-reviewed journal articles, co-authored/edited 14 books/book chapters, and served as author on two NCRP reports, two ICRP publications, and two MIRD monographs.

Dr. Bolch has managed a broad research program including (1) National Institutes of Health (NIH) and U.S. Department of Energy funded projects to construct high-resolution models of the skeleton to support dose-response studies in radionuclide therapy and radiation epidemiology; (2) NIH funded projects to develop scalable NURBS-based and voxel-based computational phantoms of adult and pediatric patients and associated software for organ dose assessment in nuclear medicine, computed tomography, interventional fluoroscopy, and radiotherapy; (3) private company funded projects to develop stereotactic kilovoltage x-ray treatments for age-related macular degeneration and glaucoma; and (4) Centers for Disease Control and Prevention funded projects in stochastic modeling of worker inhalation and gamma-ray exposures following radiological accidents and potential terrorist events. He is the recipient of the 2014 Distinguish Scientific Achievement Award by the Health Physics Society acknowledging outstanding contributions to the science and technology of radiation safety.

is the Scientific Director of the Non-clinical Development Program in SRI International's Biosciences Division. Dr. Chang received her BA in mammalian physiology, MA in bioradiology, and PhD in radiation biology/biophysics from the University of California, Berkeley. She is the principal investigator (PI) on a number of National Institute of Health, National Aeronautics and Space Administration, Biomedical Advanced Research and Development Authority (BARDA), and commercially-sponsored projects, using both in vitro and in vivo model systems to understand mechanisms of radiation injury and efficacy of medical countermeasures. As PI for the National Institute of Allergy and Infectious Diseases-supported medical countermeasure product development program, she and her team conducted a battery of studies that contributed to the Food and Drug Administration's approval of Romiplostim for hematopoietic syndrome under the Animal Rule. During her tenure at SRI, Dr. Chang has led multiple nonclinical product development programs for vaccines, biologics, metal decorporation agents, and small molecules that have resulted in over 10 approved investigational new drug applications. In collaboration with a team of SRI investigators, she is working on a BARDA-funded biodosimetry project to develop a hand-held field-deployable device for early detection of radiation exposure and triage. She has served on NCRP Scientific Committees for Report No. 181 on the evaluation of the biological effectiveness of low energy photons and electrons in inducing cancers in humans and Report No. 183 on radiation exposure in space and the potential for central nervous system effects.

is Professor of Radiology at the University of California (UC) Davis School of Medicine in Sacramento, California. He received a PhD in Radiological Sciences from UC Irvine in 1982, specializing in quantitative digital fluoroscopic imaging. Directly thereafter, he took a faculty position at UC Davis Medical Center, pursuing digital imaging research, physics education efforts for graduate students and radiology residents, as well as quality control for medical imaging equipment in Diagnostic Radiology. He has continuing academic interests in digital mammography, computed tomography, interventional radiology, imaging informatics, and radiation dose tracking, assessment, and reporting. Former president of the American Association of Physicists in Medicine (AAPM) in 2011 and current Governor of the American Board of Radiology, Dr. Seibert has served and continues to interact with many professional committees in regards to medical imaging issues and presenting technical / educational events for the AAPM, International Atomic Energy Agency, and other professional societies. For NCRP, he is a member of Program Area Committee 4. As a co-author of The Essential Physics of Medical Imaging textbook for diagnostic physics education, Dr. Seibert continues with the development of cutting edge imaging technologies and medical physics education to improve the state of imaging science for the betterment of patient care.