Michael R. Corbett, Ph.D., LL.M., F-ABFT, FCSFS
Alcohol, Drugs & Impairment Division Chair
Dr. Corbett is a forensic toxicologist with over 30 years of full-time experience. He received a Ph.D. in chemistry from the University of Toronto and an LL.M. from Osgoode Hall Law School at York University. He is a Fellow of the American Academy of Forensic Sciences and the Chartered Society of Forensic Sciences, and a member of numerous other professional organizations, such as the Society of Forensic Toxicologists. He is the immediate past-president of the Medico-Legal Society of Toronto. He initially worked for 13 years as a forensic toxicologist for the Province of Ontario, and thereafter continued a full-time diverse consulting practice in forensic toxicology for more than 20 years. He was an adjunct professor in forensic science at the University of Ontario Institute of Technology for 10 years. He is a consultant inspector for the National Laboratory Certification Program in workplace drug testing. He has presented on research at forensic science conferences and education in legal programs. He has testified more than 950 times as an expert witness on alcohol, drugs and impairment/intoxication in cases involving death, injury and other aspects.
Russell J. Lewis, PhD, F-ABFT
Alcohol, Drugs & Impairment Division Vice Chair
Dr. Lewis is the forensic sciences supervisor at the Federal Aviation Administration’s Forensic Sciences Laboratory at the Civil Aerospace Medical Institute in Oklahoma City, Oklahoma. He oversees the toxicological analyses of civil aircraft accident fatalities and select National Transportation Safety Board surface accidents, acts as the certifying toxicologist, and provides expert testimony for casework and final case reports. Dr. Lewis also serves as an adjunct clinical assistant professor for Oklahoma State University Center for Health Sciences School of Forensic Sciences. Dr. Lewis’ current research activities include investigating postmortem ethanol formation and developing new methods for the analysis of drugs in postmortem specimens. Dr. Lewis has authored/co-authored over 85 scientific journal articles, book chapters and government reports. Dr. Lewis received a bachelor of science in chemistry and mathematics (dual major) from Black Hills State University in South Dakota, and a master’s in chemistry, a specialization in neuroscience and a Ph.D. in analytical chemistry from University of Oklahoma.
Chris Heartsill, B.S., D-ABFT-FT
Alcohol, Drugs & Impairment Division Secretary
Mr. Heartsill is certified by the American Board of Forensic Toxicology as a Diplomate - Forensic Toxicology and received his B.S. degree in Chemistry from East Central University. He has worked in analytical chemistry for over 30 years, with more than 27 years of forensic toxicology experience including the areas of human performance forensic toxicology, postmortem forensic toxicology, and forensic laboratory quality management. Chris is the regional toxicology liaison for NHTSA Region 7 and an active member of the Society of Forensic Toxicologists, serving as the secretary and chairing committees. He is also a member of the Southwestern Association of Toxicologists, Texas Association of Crime Laboratory Directors. With the NSC Alcohol, Drugs & Impairment Division, he serves on the Executive Board and is chair of the Administrative Committee.