Skip Ribbon Commands
Skip to main content
ERHS Affiliate Faculty

​Affiliate faculty are individuals who are employed outside of Colorado State University and have been appointed as affiliate members of the academic faculty in the Department of Environmental and Radiological Health Sciences at CSU because they possess training and experience useful to the Department's teaching and research program. Affiliate faculty serve on MS and PhD Advisory committees of our graduate students and provide advice and resources to our department. Affiliate faculty members are nominated by a regular faculty member who serves as their sponsor.




Busacker, Ashley Anne, Ph.D.
Maternal and child health; Chronic disease; Rural health; Asthma
Dr. Busacker is a Senior Service Fellow for the Maternal and Child Epidemiology Team (MCH), Applied Sciences Branch, Division of Reproductive Health, National Center for Chonic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention; Field Assignee to Wyoming as Senior Epidemiology Advisor to MCH and Diabetes Wyoming Department of Health in Cheyenne, Wyoming.
Mead, Paul, M.D., MPH
Vector-borne Infectious Diseases
Dr. Mead is Chief, Epidemiology and Surveillance Activity Bacterial Diseases Branch, Division of Vector-Borne Infectious Diseases, National Center for Zoonotic, Vector-Borne and Enteric Diseases, Centers for Disease Control and Prevention in Fort Collins, Colorado
Ryan, Timothy P., M.S., Ph.D.
Practical application of epidemiology in public health and in the private sector.
Dr. Ryan serves as an epidemiologist and senior data analyst with HCMS Group in Cheyenne, Wyoming.  His primary focus is on the epidemiology of disease and disease clustering as well as study design. Provides additional focus on understanding the business impacts of company health policy and health plan design through risk segmentation, econometric analysis, and predictive modeling.
Ward, Mary, Ph.D.
Nitrates, Pesticides and Cancer and Environmental Exposure Assessment.
Dr. Ward is a Senior Investigator with the Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics with the National Cancer Institute.





Duff, Martine, Ph.D.
Technical leadership and innovative scientific research and technology applications in the nuclear nonproliferation, traditional/nuclear forensic, environmental chemistry, materials science areas.
Dr. Duff is a Fellow Scientist at the Savannah River National Laboratory (SRNL) in Aiken, South Carolina. 
Eurell, Thomas E., Ph.D., D.V.M.
Coral reef remediation and the role of ultraviolet light in potentiating coral reef diseases.
Dr. Eurell is a Professor of Marine Medicine and Veterinary Toxicology in the School of Veterinary Medicine of St. George's University in Grenada, West Indies.
Kuhne, Wendy Wells, Ph.D.
Radioecology; Assists with ERHS 563 - Environmental Contaminant Modeling I.
Dr. Kuhne is a Senior Scientist at the Savannah River National Laboratory in Aiken, South Carolina
LaRosa, Jerome J.
Chemistry; Ionizing Radiation; Radioactivity
Dr. LaRosa is a Research Radiochemist with the National Institute of Standards and Technology (NIST) in Gaithersburg, Maryland.
Pinder, John E., III, Ph.D.
Radioecology; Plant Ecology; Remote Sensing; Statistical Analysis.
Dr. Pinder is a retired Associate Research Ecologist from the University of Georgia and former Associate Professor in the Department of Environmental and Radiological Health Sciences at Colorado State University.
Simon, Steven L., Ph.D.
Radiation dosimetry and dose reconstruction methods; Dose estimation for cohorts exposed to environmental, medical, or occupational radiation; Health risks from radiation exposure; Radioactivity in man and the environment and quantitative estimation of transfer coefficients; Uncertainty analysis of radiation exposure models.
Dr. Simon is a Staff Scientist and Head of the Dosimetry Group, Radiation Epidemiology Branch, Division of Cancer Epidemiology and Genetics at the National Cancer Institute, National Institutes of Health in Rockville, Maryland.
Ullom, Joel N.
Technology development for radiation detection.
Dr. Ullom is the National Institute of Standards and Technology (NIST) Project Leader for superconducting calorimeter development in Boulder, Colorado. This role includes responsibility for six transition-edge sensor-based instruments at collaborating institutions.
Ulsh, Brant, Ph.D., CHP
Retrospective radiation dose assessment both in human and in nonhuman species. Radiation cytogenetics and biodosimetry. Biological effects of low-dose radiation exposure. Human health and ecological risk assessment.
Dr. Ulsh is a Research Health Scientist with the National Institute for Occupational Safety and Health (NIOSH).
Zeitlin, Cary J., Ph.D.
Heavy ion space radiation and dosimetry.
Dr. Zeitlin is a Principal Scientist with the Department of Space Operations at the Southwest Research Institute in Boulder Colorado.




Adgate, John, L., Ph.D.
Exposures in gas and oil industry drilling/fracking.
Dr. Adgate is a Professor and Chair in the Department of Environmental and Occupational Health at the Colorado School of Public Health (CSPH), UC Denver Campus.
Beaulieu, Harry J., Ph.D., CIH, CSP
Industrial Hygiene; Protecting workers and the environment.
Dr. Beaulieu is the president and owner of his private practice of Industrial Hygiene, Industrial Hygiene Resources (IHR), headquartered in Boise, Idaho.
Douphrate, David I., Ph.D., MPT, MBA
Cause and prevention of work-related musculoskeletal disorders, ergonomics, workplace safety, and occupational health and safety management.
Dr. Douphrate is an Assistant Professor in the Division of Epidemiology, Human Genetics and Environmental Sciences at the University of Texas School of Public Health.
Ellwood, Cynthia, Ph.D., CIH
Industrial Hygiene; Indoor Environment Quality; Control methods and field practice.
Dr. Ellwood Is the President and Principal Industrial Hygienist for Associates in Occupational and Environmental Health, LLC located in Black Hawk, Colorado.
Noller, Ben L., P.G., CCC
Mr. Noller is a Professional Geologist and Certified Environmental Scientist. He has been the Project Manager on various projects for several organizations including the City and County of Denver, the U.S. Department of Energy, Eagle County, and Hewlett-Packard.
Mr. Noller currently serves on the ERHS Undergraduate Education Advisory Committee and guest lectures in ERHS 220 - Environmental Health and ERHS 320 - Environmental Health Water Quality.
Nonnenman, Matthew, M.S., Ph.D., CIH
Industrial Hygiene; Physical, chemical and biological exposures among workers and families in agriculture, forestry, and fishing industries. HICAHS collaborator.
Dr. Nonnenman is an Assistant Professor in the Department of Occupational and Environmental Health at the University of Iowa, College of Public Health
Roy, Chad J., Ph.D.
Infectious disease aerobiology, bioaerosols, primate models of disease, aerosol science.
Dr. Roy is an Associate Professor of Microbiology and Immunology and Core Director of the Infectious Disease Aerobiology program within the Division of Microbiology at the Tulane National Primate Research Center.




Chuang, Eric Y., Sc.D.
Biochip Technologies, Bioinformatics and Cancer. Charged particle (proton and carbon ion) radiation therapy.
Dr. Chuang is a Professor in the Graduate Institute of Biomedical Electronics and Bioinformatics/Department of Engineering at the National Taiwan University in Taipei, Taiwan.
Harmon, Joseph F., Jr., Ph.D., DABR

Kavanagh, Brian D., M.D., MPH
Prostate Cancer, Lung Cancer, Brain Tumors, Radiosurgery, Stereotactic Body Radiation Therapy.
Dr. Kavanagh is a Professor, Vice-Chair, and Clinical Practice Director in the Department of Radiation Oncology at the University of Colorado Health Sciences Center.
Okayasu, Ryuichi, Ph.D.
Cancer Biology/Radiation Biology: DNA damage and repair using mammalian systems. DNA double strand break repair proteins. Cellular and molecular carcinogenesis. Radiation molecular cytogenetics. Metal toxicology. Cellular and molecular toxicology. Space radiation biology.
Dr. Okayasu is the Scientific Secretary of the International Open Laboratory (IOL) at the National Institute of Radiological Sciences (NIRS) in Chiba, Japan
Waldren, Charles A., Ph.D., Professor Emeritus
Radiation Biology




Beard, Charles B., M.S., Ph.D.
Dr. Beard serves on the External Advisory Board for the Center for Environmental Medicine (CEM) and for the Rocky Mountain Regional Center of Excellence for Biodefense and Emerging Infectious Diseases Research (RMRCE). He also guest lectures in ERHS 502 - Fundamentals of Toxicology.
Dr. Beard is Chief of the Bacterial Zoonoses Branch, Division of Vector-Borne Infectious Diseases, National Center for Infectious Diseases with the Centers for Disease Control and Prevention, Fort Collins, Colorado branch.
Pillard, David A., Ph.D.
Environmental Toxicology
Dr. Pillard is the Program Manager and Technical Director of the AECOM Environmental Toxicology Laboratory located in Fort Collins, Colorado.
Yang, Raymond S. H., Ph.D., Professor Emeritus
Since 2007, Dr. Yang has been engaging in international consulting work in Toxicology and Physiologically Based Pharmacokintic (PBPK) modeling. Clients include USEPA, CDC/ATSDR, British American Tobacco, and Abbotts Laboratories. Training scientists all over the world on PBPK Modeling and application of PBPK Modeling to risk assessment and safety evaluation.
Dr. Yang is the principal scientist and owner of Ray Yang Consulting, LLC.


make a gift
Contact Us:
​1681 Campus Delivery
Fort Collins, Colorado 80523-1681

(970) 491-7038

​(970) 491-2940