Clinical Expert Witnesses
Clinical expert witnesses and consultants listed here may be able to form expert opinions, draft expert witness reports, provide expert witness testimony at deposition and/or trial as or serve as consulting (non-testifying) experts on clinical. The clinical expert witness listings on this page are typically from fields/areas of expertise such as: Cannabis, Emergency Medicine, Infectious Diseases, and Laboratories & Testing.
David Joel Witt, MD, FIDSA, CIC
Praxis Med Experts
San Rafael, California
Infectious Diseases, Emergency Medicine
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Internal Medicine, Tropical Medicine, Infection Control, Clinical, COVID-19, Vaccines, Transplant
Dr. Witt is an Infectious Disease Specialist and the former regional hospital epidemiologist with Kaiser Permanente in Northern California. He attended medical school at the University of Michigan and residency and fellowship at The Boston City Hospital in Boston, MA. He is board certified in Internal Medicine and Infectious Diseases. He has been board certified in Emergency Medicine and is board certified in Tropical Medicine and Infection Control. He has also been board certified in Internal Medicine & Infectious Diseases. He has been on the faculty of the Schools of Medicine and Nursing at the University of California at San Francisco.
Shaun R Opie, PhD
Cannabis Laboratories & Testing
E4 Bioscience
Charlevoix, Michigan
Cannabis, Laboratories & Testing
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Laboratory, Cannabis, Marijuana, Compliance, Regulatory, Cannabinoid, THC, Potency, Contaminant, Quality Management System, Audit, ISO 17025, FDA, Clinical, DNA, Molecular, Genetic, Testing
Dr. Opie is a previous founder of multiple analytical testing laboratories in both clinical diagnostics and cannabis compliance testing. He has been a plaintiff, defendant, and cannabis laboratory testing expert witness in multiple legal matters. Since 2018 he has been advising laboratory owners and investors about regulatory, quality, scientific, and business operations issues.
In addition to being a regular invited speaker at national conferences, He is also the editor and contributing author to the textbook, "Cannabis Laboratory Fundamentals". Dr.Opie has written a variety of articles around laboratory operations including: Cannabis Laboratory Planning, Design, Licensing, Instrumentation, and Staffing, A Hemp Growers Guide to Compliance Testing for THC and CBD Levels, A Guide to Preparing Cannabis Laboratory Business License Applications, and How to Start a Cannabis Testing Lab: A Step-by-Step Guide. Dr. Opie is a quality management system lead assessor for laboratories ...
