Leadership Team

The leadership of the Oak Ridge Institute for Science and Education is accountable for ensuring accomplishment of the ORISE mission and vision, as well as providing senior level oversight of ORISE operations and the fulfillment of contractual requirements.

The team is comprised of experts who are leading the advancement of ORISE performance in STEM workforce development, scientific peer review, radiation emergency medicine, environmental assessments, and health surveillance and the protection of human subjects in research.

Jim Vosburg

William J. (Jim) Vosburg

Director, Oak Ridge Institute for Science and Education

William J. (Jim) Vosburg, Ed.D., serves as director of the Oak Ridge Institute for Science and Education (ORISE). He leads a multifunctional mission implementing all elements of the ORISE performance areas, including science, technology, engineering and mathematics (STEM) workforce development, scientific and technical resource integration, human subject health and protection surveillance, independent environmental assessment and verification and operations of the Radiation Emergency Assistance Center/Training Site (REAC/TS). Vosburg also serves as a senior vice president/corporate officer of ORAU, and he is a member of the ORAU Strategic Leadership Team.

Prior to leading ORISE, Vosburg served as a senior manager for the U.S. Department of Energy (DOE), National Nuclear Security Administration’s Office of Secure Transportation. He was responsible for all corporate workforce development and education for multiple operational sites nationwide. He established core international and interagency partnerships with the United Kingdom Royal Marines and with the U.S. Department of Homeland Security Federal Law Enforcement Training Center.

Vosburg holds a bachelor of science degree in workforce education and development from Southern Illinois University and a doctor of education degree in human resource development from Vanderbilt University. He serves as an adjunct assistant professor at Vanderbilt University’s Owen Graduate School of Management and the University of Tennessee’s Haslam College of Business.

Vosburg is a veteran of the U.S. Air Force having served as a security forces officer within the Pacific Air Forces Command and the Air Force Materiel Command.

Marcia Mask

Marcia Mask

Deputy Director, Oak Ridge Institute for Science and Education

Marcia Mask serves as deputy director of the Oak Ridge Institute for Science and Education (ORISE). In this role, she is responsible for the oversight of staff and resources that implement the Contractor Assurance Program (safety, security, quality, risk management) for the ORISE contract. Mask also has management and oversight of direct operational units including the Strategic Partnership Projects Program, Budget Office, General Accounting and Outreach and Engagement. In addition to these responsibilities, Mask serves as an adviser to the ORISE director for advancing the critical scientific, research and health initiatives of the U.S. Department of Energy.

Previously, Mask served as the ORISE program manager and was responsible for supporting oversight and operations of the multifunctional ORISE program. Mask has also served as an education group manager, senior project manager and a business support analyst within ORAU.

Before joining ORAU, Mask spent more than a decade performing urban planning and overseeing programs that promoted affordable housing and community development for local governments in Tennessee and Florida.

Mask received a bachelor of arts degree in political science and a master of public administration degree from the University of Tennessee, Knoxville. She holds numerous professional certifications, including Project Management Professional (PMP), Project Management Institute Risk Management Professional (PMI-RMP), PMI Agile Certified Practitioner (PMI-ACP) and Certified Scrum Product Owner (CSPO).

Carol Iddins

Carol Iddins, M.D.

Director, Radiation Emergency Assistance Center/Training Site

Carol Iddins, M.D., serves as director of the Radiation Emergency Assistance Center/Training Site (REAC/TS). As director, she ensures support to multiple governmental and nongovernmental national readiness agencies, as well as oversees the REAC/TS mission to provide advice to other health care professionals regarding the medical management of ionizing radiation-induced injuries and illnesses. Iddins leads REAC/TS as the United States’ only Collaborating Center for Radiation Emergency Management for the World Health Organization (WHO) and coordinates international response through the International Atomic Energy Agency’s (IAEA) Radiation Assistance Network (RANET) and WHO’s Radiation Emergency Medical Preparedness and Assistance Network (REMPAN).

Iddins has consulted on patients with radiation-related injuries/illnesses and has deployed internationally for RANET to provide subject matter medical expertise. Iddins routinely consults on calls regarding potential and actual radiation exposures, evaluates and participates in radiological/nuclear exercises, and shares her specialized knowledge worldwide at courses and professional meetings. She is a member of the National Council on Radiation Protection and Measurements PAC 3 Nuclear and Radiological Security and Safety Committee.

Iddins earned a doctor of medicine degree at the University of Tennessee Health Science Center and completed her residency training in obstetrics and gynecology at the University of Tennessee. She has practiced obstetrics and gynecology and aerospace/occupational medicine in civilian and military environments.

Iddins is a Diplomate of the American Board of Disaster Medicine and a Fellow of the American Academy of Disaster Medicine, and currently the vice president of the American Academy of Disaster Medicine. Iddins is a decorated U.S. Air Force veteran of Operations Allied Force, Enduring Freedom and Iraqi Freedom.

keri cagle

Keri Cagle

Director, Scientific and Technical Resource Integration

Keri Cagle serves as director of Scientific and Technical Resource Integration. She is responsible for overseeing ORISE peer and merit reviews and related scientific meetings and reports. She and her staff support nine offices within the U.S. Department of Energy (DOE) Office of Science (Advanced Scientific Computing Research, Basic Energy Sciences, Biological and Environmental Research, Fusion Energy Sciences, High Energy Physics, Nuclear Physics, Workforce Development for Scientists and Teachers, Small Business Innovation and Small Business Technology Transfer, and the Office of the Deputy Director for Science Programs), the National Nuclear Security Administration Office of Defense Programs, the Office of Energy Efficiency and Renewable Energy, the Office of Environment, Health, Safety and Security, as well as several DOE National Laboratories, including Oak Ridge National Laboratory, Argonne National Laboratory and Sandia National Laboratories.

Cagle has more than 14 years of ORISE-related experience. Previously, as associate director for Technology Support and Systems Development, she sponsored the redesigns of key systems such as PeerNet™, Zintellect and a customer dashboard. She spent nearly six years managing DOE peer review projects, including more than two years as Scientific Computing Research peer review project manager and more than five years as DOE International Health Studies project manager. Prior to that, she provided financial management and internal audit support to all DOE Office of Science offices.

She earned a master of science degree in organizational leadership from Regis University, and she is pursuing a doctor of education degree in leadership and learning from Vanderbilt University with completion planned for 2021. She is also a Certified Project Management Professional (PMP) and Certified Internal Auditor, and she has a Master’s Certification in Government Contracting.

Ashley Golden

Ashley Golden

Director, Health Studies

Ashley Golden is director of the ORISE Health Studies program where she oversees organizational strategy and implementation, along with the day-to-day operations. She also serves as a subject matter expert for epidemiologic investigations, biostatistical analyses and interdisciplinary projects in the areas of occupational health, radiation exposure and dosimetry, medical surveillance, public health and survey analyses.

For more than six years, Golden has supported the epidemiologic study of the One Million U.S. Radiation Workers and Veterans, a multi-institutional and multi-agency funded study for health effects of radiation exposure in which ORISE is a key collaborator.

Since joining the organization in 2012, Golden has provided analytical expertise and direction to four ORISE worker health data registries. In the ORISE Beryllium Laboratory, she participates in review of test results, new serum validation, proficiency procedures and research efforts. Additionally, Golden leads research studies and analyses for the U.S. Department of Energy Former Worker Program.

Golden holds a Doctorate of Philosophy in comparative and experimental medicine with a major in biostatistics and epidemiology from the University of Tennessee. She is an active scientist within the radiation epidemiology and occupational health scientific communities with numerous publications, invited presentations and service to scientific committees and journals.

Derek hagemeyer

Derek Hagemeyer

Director, Independent Environmental Assessment and Verification

Derek Hagemeyer serves as director of the Independent Environmental Assessment and Verification (IEAV) program at the Oak Ridge Institute for Science and Education (ORISE). In this role, Hagemeyer is responsible for the team that provides independent verification for the U.S. Department of Energy (DOE), U.S. Nuclear Regulatory Commission (NRC) and other federal and state agencies. When DOE or NRC facilities undergo decontamination and decommissioning, Hagemeyer’s team serves as the independent group that verifies and informs these agencies whether the remediated sites meet the release criteria to ensure the safety of people and the environment.

Hagemeyer has more than three decades of experience in occupational radiation exposure, including regulatory requirements, records and information systems, and project management. He serves as the principal investigator for the DOE Radiation Exposure Monitoring System (REMS) and the NRC Radiation Exposure Information and Reporting System (REIRS) projects, which involve the management and analysis of occupational radiation exposure records received at all DOE facilities and NRC licensees. He is the project manager of the NRC’s effluent project, which entails the collection and analysis of radioactive material releases from nuclear power plants. Hagemeyer oversees the Professional Training Programs, which have provided training in the radiological sciences since 1948.

Hagemeyer is serving as vice chairman of the international Information System on Occupational Exposure (ISOE) Working Group on Data Analysis to provide support in the collection and analysis of ISOE’s international database of radiation exposure information. ISOE is jointly sponsored by the Organisation for Economic Co-operation and Development and the International Atomic Energy Agency.

He received a bachelor of science degree in nuclear engineering from the University of Virginia. He serves on the University of Tennessee Nuclear Engineering Department Board of Advisors. He is a 2016 Leadership Oak Ridge graduate.

Craig Layman

Craig T. Layman

Director, Workforce Development

Craig T. Layman, Ed.D., serves as director for workforce development. He is responsible for overseeing the Oak Ridge Institute for Science and Education (ORISE) programs that are related to science, technology, engineering and mathematics (STEM) workforce development for the U.S. Department of Energy (DOE). He leads efforts to create and implement the STEM workforce development strategic plan, executes the strategic vision and oversees management and administration of more than 100 postdoctoral fellowships and research internships sponsored by DOE, U.S. Department of Defense, U.S. Department of Agriculture, Food and Drug Administration, and Centers for Disease Control and Prevention and several other federal agencies.

Prior to joining ORISE, Layman served at Tusculum University’s Knoxville campus as director for academic student services and manager of campus operations. He worked to advance educational opportunities for adult students returning to the classroom. During his time at Tusculum University, Layman served as a lecturer in the School of Business and taught research methods and data analysis.

Layman serves on the Board of Trustees at the Children’s Museum of Oak Ridge. He serves on the Anderson County Chamber of Commerce Board of Directors and its Education and Workforce Development Council. He is a 2019 inductee into the University of Tennessee, Knoxville Educators Hall of Honor, and a 2017 Leadership Oak Ridge graduate. He is a member of the American Association for the Advancement of Science, the National Postdoctoral Association and the National Association for Colleges and Employers. He earned a doctor of education degree in educational research and evaluation from the University of Tennessee, Knoxville.


J. Phil Andrews

Director, Business Operations

J. Phil Andrews is the Director of ORISE Business Operations. Andrews oversees all financial, facility, communications and business support services in support of ORISE. He provides executive leadership for the operations of four departments including the development and implementation of policies and procedures in the areas of financial management, procurement, communications, public relations and marketing, and facilities and transportation. Also, he contributes to strategic planning for the corporation and directs the strategic planning initiatives of Business Operations. In addition, Andrews serves as the ORAU Vice President of Business Operations, Chief Financial Officer, staff liaison to the Finance and Audit Committee of the ORAU Board of Directors and Treasurer of the ORAU Foundation.

Prior to joining ORAU, Andrews worked at Boeing in Oak Ridge for 26 years. He served as Boeing’s Commercial Airlines program manager/government and community relations manager in which he was responsible for business development, leading commercial airplane programs and leading government and community relations and activities. Andrews also served as chief executive officer and plant manager of the Boeing Oak Ridge Facility on three occasions.

Andrews serves on the Roane State Community College Foundation Board. He serves on the Board of Collaborative Composite Solutions Corporation (CCSC)/Institute of Advanced Composites Manufacturing Innovation (IACMI) as part of the Audit and Finance Committee. He is member of the Oak Ridge Chamber Board nominating committee.

Andrews received his bachelor’s degree in accounting and his master’s degree in business administration from the University of Tennessee, Knoxville. He is a Certified Public Accountant.

Chester Maze\

Chester Maze

Director, Information Technology Services

Chester Maze serves as director of ORISE Information Technology Services. He is responsible for overseeing the deployment, operations, integration and safeguarding of information technology in support of delivery of all ORISE-related services. He provides technical direction in evaluating and selecting new technologies to further the ORISE mission. Maze is also a vice president and chief information officer for ORAU.

Maze joined ORISE in 2010 after more than two decades of progressive advancement in information technology positions. Maze has served in executive leadership roles within the information technology industry at The Christ Hospital (vice president/CIO), Baptist Health System of East Tennessee (senior vice president/CIO), Pilot Oil Corporation (manager of Application Services) and International Technology (regional manager of Engineering Services). His direct experience includes the disciplines of software application development, infrastructure management, systems and process analysis, project management, strategic planning, budget responsibility and staff development.

Maze serves on the board of the Oak Ridge Methodist Medical Center, and he is a past member of the McKesson Corporation Strategic Advisory Board and the East Tennessee Health Information Network. He earned a master of business administration degree in management and controllership from the University of Tennessee, Knoxville, where he previously served as adjunct faculty. He earned a bachelor of science degree in business administration with an information systems option from Morehead State University.