Dr. William R. Sawyer is a Professional Toxicologist with a doctorate in toxicology from Indiana University School of Medicine. He has over 33 years of extensive experience in Public Health and Forensic Toxicology with specialized expertise in causation analyses (plaintiff and defendant) including Alcohol toxicology, Drugs-of-Abuse, Pharmaceuticals, Herbal Products, Dioxins, Solvents, Heavy Metals, Crude Oil and other Chemicals. Dr. Sawyer has testified in trial or deposition in over 30 states including NY, MA, CT, PA, RI, NH, DE, NJ, WV, VA, NC, SC, GA, FL, AL, MS, LA, AR, MO, KY, IN, IL, WI, MI, OH, MN, MT, WA, CA, TX, OK.
As a skilled scientist and communicator in the area of toxic tort, Dr. Sawyer provides services to governmental agencies, corporations, select plaintiffs or defendants. Dr. Sawyer currently serves as Chief Toxicologist for TCAS, LLC, and served for 23 years as an Assistant Professor (adjunct) with the Department of Medicine, Upstate Medical University, Syracuse, New York. Dr. Sawyer also has approximately 14 years experience as a licensed clinical and environmental laboratory director in several states.
Lisa Myers interviews Dr. Sawyer on NBC Nightly News
TCAS Services and Expertise:
Mass Toxic Tort
Medical Malpractice - Pharmaceuticals
Forensic Source ID
Qualifications & Experience
Academic Affiliations- Medical School Faculty (adjunct)
Government Experience - Public Health Toxicologist
Mohan Nair, MD, trained at the University of California (Irvine) and Harvard and is board certified in:
Brain Injury Medicine
Behavioral Neurology / Neuropsychiatry
Dr. Nair brings his extensive training, clinical experience, and formal board certifications to provide in-depth and nuanced medico-legal analysis of cases for both adults and children involving brain injury, frequently and tragically combined with chronic pain and severe psychological trauma (PTSD). He is committed to comprehensive and accurate forensic examinations, quality neuropsychological assessment, and the use of the most up-to-date technology available in the field.
Dr. Nair has provided extensive trial testimony in defense and plaintiffs' cases. He provides and coordinates medical, psychological, neuropsychological, toxicological, and imaging experts for complex civil litigation. Dr. Nair has been on cases involving:
MEDICAL TOXICOLOGY: Lead Exposure, Carbon Monoxide Poisoning, Mold
STANDARD OF CARE: Psychiatric/Psychological / Psychotherapeutic Malpractice, Wrongful Death from Prescribing Psychiatric Medication
1970-75 Doctor of Medicine, University of Bombay
1981-83 Clinical Fellow in Child Psychiatry, Harvard University; McLean Hospital / Massachusetts General Hospital
1978-81 University of California at Irvine: Residency in Psychiatry
Dr. Nair is board certified by the American Board of Medical Specialties in Brain Injury Medicine, Psychiatry, Child Psychiatry, Forensic Psychiatry, and Addiction Medicine. Additionally, he is board-certified in Pain Medicine, Psychopharmacology, and Behavioral Neurology / Neuropsychiatry. He currently holds medical licenses in California and Hawaii.
Ted W. Simon, PhD, DABT, is an award winning Environmental Toxicologist and Scientist. His expertise is in toxicology, risk assessment, mathematical modeling, statistics, neuroscience, and environmental / ecological health issues.
Dr. Simon has over 10 years of experience as a toxicologist employed by the Environmental Protection Agency (EPA). He served as EPA’s senior toxicologist in the waste management division working on risk and soil cleanup.
Teaching Experience - Since 2001, Dr. Simon has served as an Instructor / Adjunct Professor in the Department of Environmental Health Science, College of Public Health, at the University of Georgia.
Public Speaker - Well published, including the author of a textbook on toxicology and environmental risk assessment, Dr. Simon has extensive national and international public speaking experience. Since 1996, he has been delivering seminars and lectures to universities and national institutes on many subjects within his area of expertise. In 2016, he delivered a lectures on “Bayesian Methods for Application of Uncertainty Factors,” to the Society of Toxicology Annual Meeting, New Orleans, LA, and “Quantitative Prediction of Phenotypic Change from High Throughput Assay Results,” to the EPA's Workshop on In Vitro to In Vivo Extrapolation, Research Triangle Park, NC.
Litigation Support - Dr. Simon has over 15 years of experience offering expert witness services to counsel representing both plaintiff and defendant. He has been retained over 20 times since 2000 for cases involving environmental risk, drug and alcohol cases, DUI, accidental poisoning, and intellectual property. Dr. Simon has particular expertise in dioxin-like chemicals and polychlorinated biphenyls (PCBs). His services include consulting, reports, deposition, and trial testimony when necessary.
The willingness to view risk as part of daily life has vanished. A risk-averse mindset among environmental regulators engenders confusion between the ethics of intention and the ethics of consequence, leading to the elevation of the precautionary principle with unintended and often unfortunate outcomes. Environmental risk assessment is conservative, but the actual level of conservatism cannot be determined. High-end exposure assumptions and current toxicity criteria from the USEPA, based on linear extrapolation for carcinogens and default uncertainty factors for systemic toxicants, obscure the degree of conservatism in risk assessments. Ideally, one could choose a percentile of the target population to include within environmental standards, but this choice is complicated by the food, pharmaceutical and advertising industries, whose activities, inadvertent or not, often promote maladaptive and unhealthy lifestyle choices.
Ronald E. Gots, MD, PhD, DABT, is Board Certified in Toxicology and a Diplomate of the American Board of Toxicology. He has over 30 years of experience as CEO of a successful, highly-regarded biomedical consulting firm dealing with Toxicology, Pharmacology, and Epidemiology.
Dr. Gots has assisted hundreds of clients in analysis, strategy, and testimony in chemical and mold injury claims, regulatory matters, mass tort claims, environmental and workplace exposure issues, and risk communication.
Dr. Gots has shared his expertise with workers and community groups in dozens of toxic exposure matters across the country. He has been consulted for indoor environmental and air quality assessments for numerous office buildings, schools, and manufacturing facilities. He has lectured at numerous national meetings of claims executives, attorneys, policy makers, and physicians in the fields of medicine and science, toxicology, regulation, and claims resolution. He has testified in congressional subcommittee hearings concerning victim compensation legislation.
Dr. Gots has been honored for outstanding achievement from the AOA Medical Honor Society, Sigma Xi Research Honor Society, and the Society of Toxicology Membership. He is the author of six books, chapters in six books, and more than 70 articles on biochemistry, toxicology, mold and mold toxins in insurance and legal literature.
Litigation Support - Dr. Gots has provided expert witness services nationwide. He provides scientific / medical support in individual tort and mass tort claims, involving a range of biological and chemical agents, as well as pharmaceuticals. With over 100 jury trials, he and his team at the International Center for Toxicology and Medicine offer services including:
Chemical sensitivity (or "multiple chemical sensitivity") describes people with numerous troubling symptoms attributed to environmental factors, from simple housepaint to complex building structures and materials in offices and schools. The authors explore the speculations about environmental exposure in the light of scientific knowledge of human physiology, allergy and immunology, pathology, toxicology, and clinical medicine.
Andrew D. Ewens, PhD, DABT is a Board-Certified Forensic Toxicology Expert. Dr. Ewens has 26 years of Biomedical experience having worked as a toxicologist government contractor for the CDC, EPA, NIH (National Cancer Institute, National Library of Medicine, National Institute of Environmental Health Sciences/National Toxicology Program).
Dr. Ewens has10 years of academic research experience and has been conducting Forensic Toxicology research since 2017. Research projects include false positive test from CBD oil, mouth alcohol, reliability of the Intoximeter EC/IR II evidentiary breathalyzer, developing objective measures of impairment to improve the SFST/DRE evaluations, and development of raman spectroscopy breath alcohol analyzer.
Litigation Support - Dr. Ewens has been an expert witness since 2015, Interpreting Drug Use, Impairment, and Drug-induced Death. He is qualified to testify in North Carolina, Texas, Maryland, and Michigan.
Richard Stripp, PhD, is a nationally recognized expert in Toxicology providing services in all aspects of a Clinical and Forensic Toxicology. He has served as an expert consultant in 100’s of cases in the field of toxicology and pharmacology for attorneys, investigators, and physicians involved in forensic and clinical toxicological evaluations associated with ethanol, drugs of abuse, prescription medications and chemical exposure. Dr. Stripp provides unbiased expert case reviews involving drug effect on human performance, toxicity of iatrogenic/ therapeutic agents, lead and other toxic metals, carbon monoxide and environmental/occupational hazards. These services include, impartial evaluations involving drug impairment, overdose, toxic chemical exposure, medical issues associated with drug therapy, poisoning, and the role of drugs, alcohol, or chemical exposure in civil and criminal litigation. This covers a full breath of forensic medical-legal cases including:
Analytical Toxicology and Laboratory Operations
Review and Interpretation of Toxicology Reports
Assessment of Impairment and the Role of Drugs/Alcohol in fatalities, accidental injury, overdose, MVA / DWI / DUI, criminal and civil litigation
To Serve as an Expert Witness: Experienced in Depositions and Court testimony
Forensic Toxicology Case Reviews
Drug and Alcohol Effects
Environmental/Occupational Chemicals & Toxic Chemical Exposure
Interpretation of Analytical Results and Drug Testing Cases