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University of Colorado Denver


Mountain & Plains ERC Faculty



Lee S. Newman, MD, MA, FCCP, FACOEM


Dr. Newman is the founding Director of the NIOSH-funded Mountain and Plains Education and Research Center (MAP ERC). Dr. Newman is a Professor of Environmental and Occupational Health and a Professor of Epidemiology in the Colorado School of Public Health. He is also Professor of Medicine in the Division of Allergy and Clinical Immunology and the Division of Pulmonary Science and Critical Care Medicine, in the School of Medicine, University of Colorado Denver.

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Steve Reynolds, Ph.D., CIH, FAIHALucia.jpg

Deputy Director

Dr. Reynolds is the Deputy Director and the Industrial Hygiene Program Director of the MAP ERC. Dr. Reynolds is the Professor and Head of the Occupational and Environmental Hygiene Section of the Department of Environmental and Radiological Health Sciences, Colorado State University. He is Director of the CDC/NIOSH funded High Plains Intermountain Center for Agricultural​ Health and Safety, in addition to serving on the MAP ERC board.

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David Gilkey, Ph.D., DC, CPE, CSP

Continuing Education Director

Dr. David Gilkey is an Associate Professor and the Director of Undergraduate Education in the Department of Environmental and Radiological Health Sciences at Colorado State University. He is a teacher and frequent lecturer on many environmental and occupational health and safety topics. Dr. Gilkey is a Certified Professional Ergonomist (CPE). He also provides service as the Assistant Director of Continuing Education at CSU for the NIOSH funded Mountain And Plains Education and Research Center (MAP ERC).

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Natalie.jpgNatalie Schwatka, Ph.D.
Research Associate

Natalie received her Ph.D. in Environmental Health from Colorado State University, and her B.A. in Psychology from University of Portland.  Natalie’s research interests include leadership, safety climate/culture, workplace wellness programs, and the development and evaluation of leading indicators of workplace health and safety.  Natalie is passionate about working with community partners on applied research projects that ultimately result in improved academic and practical knowledge.

tenney.jpgLiliana Tenney Starr, MPH

Deputy Director, Center for Worker Health & Environment

Lili received her Masters of Public Health Degree from the Colorado School of Public Health. Her research interests include workplace wellness programs, community and behavioral health. She co-founded Health Links, a program in the Center for Worker Health and Environment.  Before pursuing her MPH and working at the Mountain and Plains ERC, Lili developed a strong background in marketing, business development and social media with her work in event production, health promotion and wellness.

rzwitter%20pic%202.JPGRoxana Witter, MD, MSPH

Director, OEM Residency Program​ & Associate Professor 

Dr. Witter is an Assistant Research Professor in the Department of Occupational and Environmental Health at the Colorado School of Public Health. She is the Program Director for the Occupational Medicine Residency Program and mentors several occupational medicine residents each year. She is co-Director of the MAP ERC Occupational Health Interdisciplinary Symposium and has previously been Director of the Occupational Toxicology MPH course.


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