Dr. John G. Keller is a specialist in general toxicology and carcinogenesis. Consulting services include risk analysis, litigation support, regulatory analysis, and occupational and environmental assessments.

Dr. Keller's 38 year career has included line and program management and laboratory research; however, most of his experience is as a consultant to industry, trade associations and law firms. Dr. Keller's extensive experience in managing and performing on complex projects involves a variety of health hazard evaluations and assessments applied in both regulatory and litigation contexts. This includes technical support to attorneys involved in regulatory actions and in toxic tort and other environmental cases covering a broad range of industrial chemicals, air and water contaminants, food and color additives and pharmaceuticals. Recently, this support has included specialized expertise on the toxicology and related health evaluations of arsenic, dioxin, volatile organic compounds, petroleum chemicals, and hydrogen sulfide. Dr. Keller has also provided support of government activities, including management of the preparation of more than 30 toxicological Profiles for the Agency for Toxic Substances and Disease Registry; he was principal author on the tin, styrene and pyridine profiles and co-author on the methylene chloride and other profiles. He also prepared a report on the use of mouse liver tumor data for the EPA's Risk Assessment Forum. Dr. Keller has coordinated all aspects of TSCA compliance for a major corporation. His research and laboratory experience includes supervision of all types of toxicology and carcinogenesis studies on many classes of chemical and products including management of Carcinogenesis Bioassay Testing for the National Toxicology Program. Previously, his responsibilities included managing all technical and administrative activities, implementing contract work assignments, planning of technical efforts, providing quality control of technical work, and interacting with private sector clients. Dr. Keller holds academic degrees from Georgetown University in Washington, D.C. and St. Louis University in St. Louis, Missouri. He is the founding editor of Drug and Chemical Toxicology and past Chair of the Gordon Research Conference on Toxicology. Currently, Dr. Keller is Treasurer of the International Society of Regulatory Toxicology and Pharmacology; Chairperson of the Public Affairs Committee of the Risk Assessment Specialty Section of the Society of Toxicology; Vice President/President Elect of the National Capital Area Chapter of the Society of Toxicology; and a member of the Toxicology Committee, Risk Assessment Task Force and Chair, Task Force on Workplace Reproductive and Developmental Hazards of the American Industrial Hygiene Association.