For more than 50 years, he has worked in the fields of toxicology and pharmacology, providing expertise in toxicological causation analysis, pharmacological and biochemical medicine, pharmaceutical product liability, forensic toxicology, human health risk assessment, and chemical exposure evaluation. His work has involved assessment of adverse drug effects, prescribing errors, drug interactions, impaired driving and psychomotor function, and health effects associated with pharmaceuticals, illicit drugs, dietary supplements, consumer products, petrochemicals, pesticides, industrial chemicals, and environmental exposures. He also has more than 20 years of expert witness experience involving consultations, depositions, courtroom testimony, and confidential toxicological analyses in civil and criminal matters.

Over the course of his professional career, he has held senior scientific and executive leadership responsibilities involving toxicology, pharmacology, product safety evaluation, and health sciences consulting within corporate and consulting environments. His work included management of toxicology and health sciences programs, oversight of product safety evaluations, supervision of scientific staff, domestic and international regulatory negotiations, and consultation regarding toxicological and health-risk issues involving pharmaceuticals, biotechnology-derived products, agricultural chemicals, petroleum products, and consumer products. His experience also includes management of contracted research programs and advisory work involving regulatory agencies and international health organizations, including the World Health Organization.

Separate from his consulting and corporate responsibilities, he has maintained extensive academic, instructional, and scholarly involvement in toxicology, biochemistry, physiology, and pharmaceutical product development. His teaching experience includes instruction of medical, dental, scientific, and engineering students in biochemistry, physiology, and toxicology principles, as well as coursework addressing pharmaceutical discovery and safety assessment. Professional credentials include a Ph.D. in Medical Biochemistry, an MBA in Business Management, and a B.S. in Chemistry. He is affiliated with numerous scientific and toxicology organizations, has participated in editorial review activities involving toxicology publications, holds multiple biotechnology and antimicrobial patents, and has authored or contributed to hundreds of declarations, depositions, toxicological reviews, confidential reports, and scientific publications involving pharmaceuticals, chemicals, environmental exposures, and consumer products.