Marijuana Expert Witnesses
Marijuana 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 marijuana. The marijuana expert witness listings on this page are typically from fields/areas of expertise such as: Addiction Medicine, Cannabis, Emergency Medical Toxicology, Emergency Medicine, Forensic Science, Laboratories & Testing, Neurology, Obstetrics & Gynecology, Occupational Medicine, Pharmacology, Pharmacology- Clinical, Premises Liability, Securities & Investments, Security, and Toxicology.
Shaun D Carstairs, MD FACMT FACEP
Experienced emergency physician and toxicologist
San Diego, California
Emergency Medicine, Toxicology
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toxicology, poisoning, overdose, drug abuse, drug withdrawal, alcohol, urine drug screen, marijuana, fentanyl, opioids, addiction, methamphetamine, medication errors, heart attack, stroke, trauma, myocardial infarction, pulmonary embolism, snake bites, sepsis
- Dual board-certified in emergency medicine and medical toxicology, actively practicing in both specialties
- Fellow of the American College of Medical Toxicology (FACMT) and Fellow of the American College of Emergency Physicians (FACEP)
- Bachelor of Science (BS) with honor from the California Institute Of Technology
- Medical degree (MD) from the Uniformed Services University, the nation’s military medical school
- Retired US Navy Captain with over 25 years of active duty service
- Prior chief medical officer for the US Marine Corps’ 1st Marine Division
- Prior residency program director and core faculty for a large emergency medicine residency program
- Professor of Military & Emergency Medicine at the Uniformed Services University
- More than 50 peer-reviewed publications, textbook chapters, and national/international presentations in the fields of medical toxicology and emergency medicine
- Lecturer for the American College of Medical Toxicology’s board review course
- Has per...
Peter John Ingersoll, CCIM
Safe Harbour Equity, Inc.
Oceanside, California
Cannabis, Securities & Investments
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Cannabis, marijuana, banking and financing, receiverships, bankruptcy, FINRA, syndication, 1031 exchanges, investor disputes, securities fraud, breach of contract, breach of fiduciary duty, investor lawsuits, unregistered securities, investor fraud, shareholder disputes, governance, compliance
Cannabis real estate and investment thought leader.
Managing director and cannabis product chair for Sperry Commercial Global Affiliates, the first national real estate firm to embrace cannabis as legitimate investment sector.
Expertise in cannabis including breach of contract issues, breach of fiduciary duty, financing & private equity, governance documents, 1031 exchanges, sale-leasebacks, broken development deals, partner disputes, receiverships (bankruptcy is not available for cannabis enterprises), investor disputes, and unregistered securities litigation.
Former Series 65 registered investment advisor.
Graduate of Wharton School – University of Pennsylvania - BS of Economics.
Co-Captain of the wrestling team
Michael J Kosnett, MD, MPH, FACMT
California
Toxicology, Occupational Medicine
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Lead poisoning, cannabis, drug testing, alcohol, marijuana, environmental toxicology, occupational toxicology, arsenic poisoning, forensic toxicology, DUI, risk assessment, aviation toxicology, medical monitoring
2016 Recipient of the American College of Medical Toxicology Matthew J. Ellenhorn Award [career achievement award in recognition
of “extraordinary contributions to the field of medical
toxicology”]
Diplomate, American Boards of Internal Medicine, Preventive Medicine (Occupational Medicine), and Medical Toxicology
Active Medical Licensure in Colorado and California
Professional activities have included:
• Past President, American College of Medical Toxicology
• Committee on Toxicology of the National Academy of Sciences
• NIOSH Board of Scientific Counselors
• CDC Advisory Committee on Childhood Lead Poisoning Prevention
• EPA Science Advisory Board panels (lead in air, water, dust)
• ATSDR expert panels (lead biomonitoring, hair analysis)
• WHO consultant and temporary advisor (arsenic in drinking water, chelation of heavy metals)
• Consultant to US Air Force Science Advisory Board (F-22)
• Consultant to the US Navy Naval Air Systems Command (F-18)
• US Army Public Health Command (c...
Allen C Bowling, MD, PhD
NeuroHealth Institute
Englewood, Colorado
Neurology, Pharmacology
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general neurology, back pain, neck pain, neuropathic pain, headache, traumatic brain injury (TBI), spasticity, alternative medicine, chiropractic, complementary medicine, diet, dietary supplements, herbs, integrative medicine, marijuana, multiple sclerosis, nutrition, pharmacology, vitamins
Allen C. Bowling, MD, PhD, is Director of the NeuroHealth Institute and is Clinical Professor of Neurology at the University of Colorado. Dr. Bowling’s areas of expertise include general neurology, back pain, neck pain, neuropathic pain, headache, traumatic brain injury (TBI), spasticity, multiple sclerosis (MS), and pharmacology. He also has expertise in cannabis (marijuana), dietary supplements, herbal medicine, chiropractic, and alternative medicine. He has more than 100 lay and professional publications, including five books, and has been a principal investigator in more than 20 clinical trials.
Dr. Bowling is a Summa Cum Laude and Phi Beta Kappa graduate of Yale, where he also obtained his MD and a PhD in pharmacology. He completed his neurology residency training at the University of California-San Francisco and his fellowship training at Massachusetts General Hospital-Harvard Medical School. In 2016, he received the Neuroscientist of the Year Award from the Colorado Neurolo...
Michael J Kosnett, MD, MPH, FACMT
Denver, Colorado
Toxicology, Occupational Medicine
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Lead poisoning, cannabis, drug testing, alcohol, marijuana, environmental toxicology, occupational toxicology, arsenic poisoning, forensic toxicology, DUI, risk assessment, aviation toxicology, medical monitoring
2016 Recipient of the American College of Medical Toxicology Matthew J. Ellenhorn Award [career achievement award in recognition
of “extraordinary contributions to the field of medical
toxicology”]
Diplomate, American Boards of Internal Medicine, Preventive Medicine (Occupational Medicine), and Medical Toxicology
Active Medical Licensure in Colorado and California
Professional activities have included:
• Past President, American College of Medical Toxicology
• Committee on Toxicology of the National Academy of Sciences
• NIOSH Board of Scientific Counselors
• CDC Advisory Committee on Childhood Lead Poisoning Prevention
• EPA Science Advisory Board panels (lead in air, water, dust)
• ATSDR expert panels (lead biomonitoring, hair analysis)
• WHO consultant and temporary advisor (arsenic in drinking water, chelation of heavy metals)
• Consultant to US Air Force Science Advisory Board (F-22)
• Consultant to the US Navy Naval Air Systems Command (F-18)
• US Army Public Health Command (c...
Shawn F Wurtsmith, MBA, PSP
Expert-Premises Liability and Security Negligence
ICIP LLC
Elizabeth, Colorado
Security, Premises Liability
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Cannabis, Marijuana, Crime Foreseeability, Risk Management, Security Breaches, Inadequate/Negligent Security, Perimeter Security, Intrusion Detection Systems, Incident Response, Premises Liability, Access Control Systems, Security Assessments, Security Management, Video Surveillance, Security Audit
Professional accreditations, licenses, and certificates granted:
Physical Security Professional (PSP), #15117, ASIS International, 2011
C-TPAT Certification - Securing the Supply Chain, 2009
Chemical Facility Anti-Terrorism Standards (CFATS)/Chemical-Terrorism Vulnerability Information Certification, 2009
Affiliations or memberships in any professional and/or industry organizations:
American Society for Industrial Security (ASIS)
International Association of Professional Security Consultants (IAPSC)
FBI InfraGard
Security Industry Association (SIA)
National Defense Industrial Association (NDIA)
Mr. Wurtsmith is an independent security consultant specializing in a comprehensive range of services crucial for premises liability and security negligence cases. From meticulous pre-case reviews to detailed site/existing conditions analysis, he offers tailored solutions to enhance physical security measures and support legal strategies. His expertise spans research and discovery, data an...
Alexandra Funk, PharmD, DABAT
Funk Rothstein Toxicology Consulting
Tampa, Florida
Toxicology, Pharmacology- Clinical
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Postmortem toxicology, overdose, poisoning, drugs of abuse, opioids, street drugs, prescription medications, over-the-counter medications, medication errors, ethanol, alcohol, DUI, marijuana, breastmilk drug transfer
Dr. Alexandra Funk is a board certified clinical toxicologist and licensed pharmacist with experience in toxicology, poison center management, pharmacology, emergency medicine, and hospital pharmacy practice. Dr. Funk regularly consults on toxicology cases in the state of Florida involving drugs of abuse, prescription medications, and over-the-counter medications in persons of all ages. Dr. Funk provides educational opportunities for both healthcare professionals and the lay public.
Dr. Funk is actively involved as a member and in leadership roles within the organizations of American Academy of Clinical Toxicology, America's Poison Centers, and American Board of Applied Toxicology.
Leon M Gussow, MD
Chicago, Illinois
Toxicology, Emergency Medical Toxicology
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Alcohol, Poisoning, opiates, opioids, Marijuana, Overdose, Cannabinoids, cannabis, intoxication, Drug Screening, Dram Shop, Drug Testing, Carbon Monoxide
Over 20 years experience providing consultation and expert witness testimony in cases involving topics including alcohol, marijuana, carbon monoxide, adverse drug effects, drug tests, and urine drug screens. Extensive teaching experience with the Toxikon Consortium Medical Toxicology Fellowship Program in Chicago.
Fellow, American College of Medical Toxicology; Board Certified in Emergency Medicine and Internal Medicine; Medical Consultant, Illinois Poison Control Center; Peer Reviewer, Clinical Toxicology; Peer Reviewer, Journal of Medical Toxicology; Peer Review, Emergency Medicine Journal; Peer Reviewer, Cleveland Clinic Journal of Medicine.
Becky K Lynn, MD, MBA, NCMP, IF
Evora LLC
Illinois
Obstetrics & Gynecology
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pelvic pain, sexual health, sexual medicine, menopause, hormone therapy, transgender, endometriosis, vaginismus, vulvodynia, orgasm, obstetrics, cannabis, marijuana, CBD
I am a board certified Adjunct Associate Professor of Obstetrics and Gynecology at Saint Louis University and the Director of the Evora Center for Menopause and Sexual Health. I who have been in practice for 16 years. I specialize in Sexual Medicine, Menopause and Transgender care. I see patients with painful sex (dyspareunia), chronic pelvic pain, orgasm dysfunction, desire disorders (low libido), vaginismus, vulvodynia and others. I am an expert in hormone therapy in menopausal women. I also manage hormone replacement in both male to female and female to male transgender patients. My published research has focused on the effects of cannabis (marijuana) on female sexual function. I practiced obstetrics for the last 16 years. I have done record review in several cases.
I hold a BA in Economics with a minor in Spanish from the University of California, Berkeley. I graduated from Georgetown University School of Medicine with an MD. I completed a residency in Obstetrics and ...
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 ...
Becky K Lynn, MD, MBA, NCMP, IF
Evora LLC
St. Louis, Missouri
Obstetrics & Gynecology
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pelvic pain, sexual health, sexual medicine, menopause, hormone therapy, transgender, endometriosis, vaginismus, vulvodynia, orgasm, obstetrics, cannabis, marijuana, CBD
I am a board certified Adjunct Associate Professor of Obstetrics and Gynecology at Saint Louis University and the Director of the Evora Center for Menopause and Sexual Health. I who have been in practice for 16 years. I specialize in Sexual Medicine, Menopause and Transgender care. I see patients with painful sex (dyspareunia), chronic pelvic pain, orgasm dysfunction, desire disorders (low libido), vaginismus, vulvodynia and others. I am an expert in hormone therapy in menopausal women. I also manage hormone replacement in both male to female and female to male transgender patients. My published research has focused on the effects of cannabis (marijuana) on female sexual function. I practiced obstetrics for the last 16 years. I have done record review in several cases.
I hold a BA in Economics with a minor in Spanish from the University of California, Berkeley. I graduated from Georgetown University School of Medicine with an MD. I completed a residency in Obstetrics and ...
Richard A Stripp, Ph.D.
American Scientific Consultants Corp
Huntington, New York
Toxicology, Pharmacology
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Forensic toxicology, alcohol, drugs of abuse, dui, dwi, dram shop, prescription pain drugs, cocaine, heroin, pcp, amphetamine, overdose, carbon monoxide, lead, heavy metals, opiates, marijuana, THC
Dr. Richard Stripp 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
Bethany Pridgen, MFS
The DEVAUS Group, LLC
Wilmington, North Carolina
Forensic Science, Toxicology
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Controlled substances, DWI, DUI, retrograde extrapolation, driving while impaired, alcohol, drunk driving, cannabis, THC, marijuana, CBD, hemp, quality assurance, ISO 17025, laboratory management, laboratory accreditation, dram shop, back extrapolation, SFST, DRE
Bethany has worked in the forensic science industry since 2005. Early in her career, she had the opportunity to open a new regional forensic science laboratory in southeastern NC. She began an 11 year journey and gained a career’s worth of experience as a laboratory director, quality assurance manager, laboratory scientist, grant writer and manager. She is a trained lead and technical assessor for ISO 17025:2017. She is extremely passionate about truth and justice and has learned that the legal system is not always fair. She has a strong desire to see people held accountable to high standards for their work when it affects the lives and freedom of others. She maintains high integrity in her work and interactions.
She became very interested in the growing cannabis industry while working in the forensics world. She believes the cannabis testing industry has a lot to learn from the forensic science industry about how to self-regulate in a world where you are not regulated. She believe...
Heath Jolliff, DO
Medical Toxicology and Forensics Expert
Mid-Ohio Toxicology Services, LLC
Columbus, Ohio
Toxicology, Emergency Medical Toxicology
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Forensic toxicology, Drug Abuse, Overdose, Impairment, Marijuana, Alcohol, Drug testing, DUI, Risk assessment, Cannabis, Opioids
Board Certified in Emergency Medicine and Medical Toxicology.
Fellowship trained at the University of Colorado/Rocky Mountian Poison and Drug Center.
Over 3 decades of clinical experience.
Expert forensics work for over 2 decades
Active Medical License in Colorado and Ohio
Fellow, American College of Medical Toxicology
Previous, Medical Toxicology Fellowship Program Director
Allison A. Muller, Pharm.D, D.ABAT, FAACT
Board-Certified Toxicologist - Penn/CHOP Faculty
Acri Muller Consulting, LLC
Aston, Pennsylvania
Toxicology, Pharmacology- Clinical
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opioids, carbon monoxide, marijuana, cannabis, impairment, DUI, drugs, medication errors, overdose, postmortem, toxicity, medications, drug testing, adverse event, dietary supplement, kratom, fentanyl, oxycodone, lithium, mold
Board-certified toxicologist. Fellow of the American Academy of Clinical Toxicology. Registered pharmacist. Over 20 years’ experience in the field of clinical toxicology.
Two decades as a clinical toxicologist and managing director at the Poison Control Center at The Children’s Hospital of Philadelphia (CHOP), consulting on toxicology cases from 21 counties in Pennsylvania and Delaware.
Expert witness experience has involved cases related to alcohol, drugs of abuse (ie, opioids, marijuana, synthetic cannabinoids, cocaine), carbon monoxide, medication errors, and postmortem toxicology.
Extensive teaching experience including as faculty at the University of Pennsylvania School of Veterinary Medicine.
Michael Moss, MD, FAACT
Salt Lake City, Utah
Toxicology, Addiction Medicine
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Drugs of abuse, Methamphetamine, Cannabis, Marijuana, Heroin, Fentanyl, Urine drug screen, DUI, Adverse drug reaction, Overdose, Poisoning, Impairment, Intoxication, Alcohol
Dr. Moss is a physician in Utah with board certification in medical toxicology, addiction medicine, and emergency medicine. He is a fellow of the American Academy of Clinical Toxicology.
He serves as medical director of the Utah Poison Control Center and has faculty appointments in Emergency Medicine, Psychiatry, and Pharmacy at the University of Utah.
He provides adult and pediatric toxicology consultation at the University of Utah Hospital and Primary Children's Hospital. He also practices addiction medicine at the University of Utah treating substance use disorder including alcohol, methamphetamine, opioids, and benzodiazepines.
Dr. Moss consults on both civil and criminal cases related to toxicology testing, interpretation, impairment, intoxication and the effects of drugs and medications:
-Drugs of abuse (e.g. heroin, opioids, fentanyl, methamphetamine, marijuana)
-Alcohol (ethanol) impairment, intoxication and BAC interpretation
-DUI/DWI
-Urine drug screen testing interpre...