Find the Right Expert for Every Case

Occupational & Environmental Medicine Physician

Marco Britton, MD, MPH, CMLE is an Occupational & Environmental Medicine expert specializing in occupational health, workers’ compensation, and medicolegal evaluation. With a career encompassing clinical experience in primary and urgent care settings, he brings a multifaceted perspective to his litigation work. His work centers on evaluating workplace injuries, assessing hazardous occupational exposures, and determining fitness for duty/return-to-work. Dr. Britton has been retained in numerous expert witness and consulting engagements across Texas, involving cases related to occupational health and workers’ compensation. His Doctor of Medicine (MD) from Southern Illinois University School of Medicine, along with his Certified Medicolegal Evaluator (CMLE) certification, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of medical causation in disputes involving occupational exposures and injuries.

PE

Michael F Myers, PE is a civil engineering expert specializing in land development and stormwater management litigation. With a career spanning drainage design, hydrology, and floodplain analysis, he brings a practical engineering perspective to evaluating compliance with regulatory standards. His work centers on investigating stormwater system failures, assessing erosion and sediment control measures, and evaluating whether adequate outfall analyses meet industry and legal requirements. Mr. Myers has been retained in numerous expert witness and consulting engagements across Virginia and Maryland, involving commercial, multi-family, and residential construction projects. His B.S. in Civil Engineering from The University of Virginia, along with his Professional Engineer licensure in Virginia, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of compliance and responsibility in disputes involving stormwater management and drainage systems.

Licensed Professional Mechanical Engineer

Ronald D. Schapf, P.E. CA, NV, TX, FL is a mechanical engineering expert specializing in machine design litigation. With a career encompassing theme park ride systems, recreational vehicles, and safety-critical vehicle systems, he brings a robust engineering framework to his litigation work. His work centers on investigating mechanical failures, assessing design compliance, and evaluating whether engineering standards were met. Mr. Schapf has been retained in numerous expert witness and consulting engagements across the United States, involving theme park rides, recreational vehicles, and specialty machinery. His B.A.Sc. in Mechanical Engineering from the University of Waterloo, along with his Professional Engineer licenses in CA and NV, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving mechanical engineering design and safety compliance.

Mechanical Engineer

Skilled and experienced in the design, analysis, troubleshooting, and failure analysis of turbomachinery and ancillary equipment. Design hardware for turbines, compressors, combustors, fuel nozzles, fluid film bearings, rolling element bearings, oil-film dampers, lube systems, plumbing, heat transfer equipment, and test equipment. Analyze internal flow, heat transfer, structures and strength, dynamics and vibration, fatigue and fracture, equipment failures and test results. Use SolidWorks Simulation™ finite element analysis code, Dyrobes™ rotordynamics analysis code, SolidWorks™ CAD software, and develop specialized computer utility programs for design, analysis, and problem solving. Procure and deliver hardware. Provide economic and engineering analyses of proposed equipment modifications. Write inspection procedures, repair procedures, and process specifications. Provide independent third-party consultation, warranty dispute evaluation, and litigation support. Access to metallurgical laboratory. Two patents in the field of jet engines. Expert witness.

E.M. Stevens Professor of Economics

David A. Macpherson, Ph.D. is an economics and labor market expert specializing in economic damages and labor economics litigation. With a career spanning labor economics, business damages, and labor market analysis, he brings a nuanced understanding of economic principles to litigation work. His work centers on investigating economic damages, assessing labor market impacts, and evaluating whether economic losses align with industry standards. Mr. Macpherson has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to labor economics, business damages, and employment discrimination. His Ph.D. in Economics from The Pennsylvania State University, along with his extensive publication record, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of economic damages in disputes involving labor market dynamics and business interruptions.

CFSE, WACH

David M. Gill, CFSE, WACH is a walkway safety expert specializing in slip-and-fall and trip-and-fall prevention litigation. With a career encompassing consultancy with property owners, managers, engineers, and design professionals, he brings a comprehensive understanding of environmental surface requirements and safety protocols to his litigation work. His work centers on investigating slip resistance testing, assessing visual warning placements, and evaluating whether flooring maintenance protocols meet safety standards. Mr. Gill has been retained in numerous expert witness and consulting engagements across the United States, involving premises liability and walkway safety cases. His B.S. in Textile Management & Marketing, along with certifications such as Walkway Auditor Certificate Holder (WACH) and Certified Forensic Slip Expert (CFSE), reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving dynamic coefficient of friction and walkway safety.

Associate Professor: Human Factors and Safety Engineering

Deborah E. Dickerson, PhD CIH CSP is a product and system safety expert specializing in industrial hygiene, hazardous materials management, and hazard control. With a career spanning product design, human-technology interaction, and risk analysis, she brings a multidisciplinary perspective to litigation work. Her work centers on investigating product safety compliance, assessing chemical exposure risks, and evaluating whether safety standards were met in industrial settings. Ms. Dickerson has been retained in numerous expert witness and consulting engagements across federal and state jurisdictions, involving industrial accident, chemical release, and product design cases. Her Doctor of Philosophy in Industrial and Systems Engineering (Human Factors Engineering), along with certifications as a Certified Industrial Hygienist (CIH) and Certified Safety Professional (CSP), reinforce her ability to deliver objective, defensible analyses. She is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving product safety and industrial hygiene.

Principal Engineer

Mark H. Kittel, P.E. is an accident reconstruction and product failure analysis expert specializing in motor vehicle accidents and product liability cases. With a career spanning vehicle design, forensic engineering, and motorcycle dynamics, he brings a comprehensive engineering framework to litigation work. His work centers on investigating vehicle system failures, assessing accident causation, and evaluating whether design or manufacturing defects contributed to incidents. Mr. Kittel has been retained in numerous expert witness and consulting engagements both nationwide and internationally, involving cases related to motorcycles, ATVs, UTVs, and other powersport vehicles. His BSME in Vehicle Design from the University of Colorado, Denver, along with certifications such as Board Certified in Forensic Engineering by the National Academy of Forensic Engineers and NCEES certification, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving vehicle dynamics and mechanical failures.

Fellow – American Board of Forensic Toxicology

Samuel Louis Kleinman, Ph.D., F-ABFT, TC-NRCC is a forensic toxicology expert specializing in DUI, drug-related death, and impaired driving litigation. With a career spanning forensic science, instrumental analysis, and toxicological chemistry, he brings a multidisciplinary approach to his litigation work. His work centers on investigating toxicological evidence, assessing the validity of laboratory results, and evaluating whether standard procedures were followed in forensic analyses. Mr. Kleinman has been retained in numerous expert witness and consulting engagements across New Mexico, involving DUI cases, workplace drug testing, and forensic toxicology disputes. His Ph.D. in Physical/Analytical Chemistry, along with certifications as a Fellow of the American Board of Forensic Toxicology and a Toxicological Chemist, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving blood alcohol interpretation and drug-related incidents.

Expert Witness

Brenda Eagan-Johnson, EdD, CBIST-AP is a Brain Injury Medicine and Education expert specializing in pediatric brain injury litigation. With a career spanning educational neuroscience, transition special education, and neurodevelopmental consulting, she brings a multidisciplinary framework to her litigation work. Her work centers on investigating pediatric brain injury causation, assessing educational impacts of acquired brain injuries, and evaluating whether standard of care in educational settings was met. Ms. Eagan-Johnson has been retained in numerous expert witness and consulting engagements across the United States, involving cases of traumatic brain injury, personal injury, and special education disputes. Her Doctorate in Education, specializing in educational neuroscience, Mind, Brain, & Teaching, along with her Certified Brain Injury Specialist Trainer with Advanced Practice in NeuroRehabilitation, reinforce her ability to deliver objective, defensible analyses. She is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving pediatric brain injuries and educational settings.

MD, FACS, FARS

David Greene, MD, FACS, FARS is an otolaryngology and facial plastic surgery expert specializing in complex cases involving head and neck surgery, facial reconstruction, and sinus-related conditions. With a career encompassing leadership roles in clinical practice, academic instruction, and research, he brings a multifaceted perspective to litigation work. His work centers on investigating surgical outcomes, assessing procedural adherence to medical standards, and evaluating whether deviations in care contributed to patient harm. Dr. Greene has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to otolaryngology, facial trauma, and reconstructive surgery. His M.D. from Yale University School of Medicine, along with Board Certifications in Otolaryngology and Facial Plastic & Reconstructive Surgery, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving surgical complications and medical negligence.

Reconstruction Specialist, ACTAR 2054

Kevin William Forcier SR, ACTAR 2054 is a Crash Reconstruction expert specializing in accident analysis and reconstruction. With a career encompassing diverse roles in law enforcement and private consulting, he brings a multifaceted perspective to litigation work. His work centers on investigating crash scenes, assessing vehicle dynamics, and evaluating occupant kinematics. Mr. Forcier has been retained in numerous expert witness and consulting engagements across Pennsylvania, involving cases related to passenger vehicles, motorcycles, and pedestrian/bicycle incidents. His Associate of Engineering Degree in Engineering, along with certifications such as ACTAR Certification and Crash Data Retrieval Specialist, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving crash data retrieval and analysis.

RA, NCARB

Jeffrey A. Grusenmeyer, RA, NCARB is an architecture and construction defects expert specializing in forensic architectural analysis and building code compliance. With a career spanning program management, owner consultant coordination, and project budget evaluation, he brings a comprehensive framework to litigation work involving architectural professional liability and construction standards. His work centers on investigating construction defects, assessing building code adherence, and evaluating whether design errors have occurred. Mr. Grusenmeyer has been retained in numerous expert witness and consulting engagements throughout Ohio, Pennsylvania, West Virginia, and Michigan, involving civic, commercial, educational, and medical projects. His Professional Degree in Architecture from the University of Detroit School of Architecture, along with certifications such as NCARB Certified and Certified as a Building Official by the State of Ohio, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of standard of care in disputes involving building envelope, waterproofing, and construction administration.

R&D Engineering Product Development Executive | IP Expert Witness

Gary D. Fletcher, Ph.D. is a medical device patent litigation expert specializing in intellectual property disputes in the healthcare and diagnostics sectors. With a career spanning R&D leadership, product development, and IP strategy, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating patent infringement, assessing the validity of intellectual property claims, and evaluating whether industry standards have been met in medical device innovations. Mr. Fletcher has been retained in numerous expert witness and consulting engagements across the United States, involving cases in medical diagnostics, blood collection, and point-of-care testing. His Doctor of Philosophy in Physics from Yale University, along with his extensive experience in biomedical engineering and intellectual property assessment, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of patent validity and infringement in disputes involving medical device technologies and diagnostics.

Consulting Physician in Occupational Medicine/Toxicology

Michael L. Fischman, M.D, M.P.H., FACOEM is an occupational and environmental medicine expert specializing in toxicology and related litigation. With a career encompassing diverse sectors such as semiconductor manufacturing, biotechnology, and healthcare, he brings a nuanced understanding of industry-specific health risks to his litigation work. His work centers on investigating occupational exposures, assessing toxicological impacts, and evaluating whether industry standards were met in workplace health disputes. Dr. Fischman has been retained in numerous expert witness and consulting engagements across the United States, involving cases in the semiconductor, biotechnology, and chemical industries. His M.D. in Medicine from the University of Michigan Medical School, along with his Master in Public Health (M.P.H.) in Environmental Health Sciences/Occupational Medicine from the University of California, Berkeley, and certifications as a Diplomate of the American Board of Internal Medicine and the American Board of Preventive Medicine in Occupational Medicine, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving occupational and environmental health issues.

Engineer: Electrical

Taylor A. Russell, P.E., CFEI is an electrical engineering expert specializing in forensic analysis of electrical system failures and compliance issues. With a career encompassing industrial automation, power systems, and control systems, he brings a multidisciplinary perspective to litigation work. His work centers on investigating electrical failures, assessing code compliance, and evaluating whether industry standards were met. Mr. Russell has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to industrial design, building automation, and electrical construction defects. His Bachelor of Science in Electrical Engineering, along with certifications such as Certified Automation Professional and Certified Fire and Explosion Investigator, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving electrical engineering and industrial design.

Vice President & Chief Forensic Examiner

Joseph Greenfield, Ph.D. is a digital forensics expert specializing in cyber breach investigations and electronic evidence analysis. With a career encompassing advanced research in digital forensics and practical application in forensic examinations, he brings a robust analytical framework to litigation work. His work centers on investigating cyber incidents, assessing digital evidence integrity, and evaluating whether security protocols were breached. Dr. Greenfield has been retained in numerous expert witness and consulting engagements across the United States, involving complex cyber investigations and digital forensics cases. His Ph.D. in Computer Science, Concentration in Digital Forensics, along with his GIAC Certified Forensic Analyst (GFCA) certification, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving cybersecurity breaches and digital evidence.

Psychologist and President

Deanna Foster, Ph.D. is a forensic psychology expert specializing in psychological evaluations and trauma-related litigation. With extensive experience in assessing psychological disorders and organizational dynamics, she brings a nuanced understanding of psychological impacts in legal contexts. Her work centers on investigating psychological conditions, assessing trauma-related claims, and evaluating whether psychological factors influence legal outcomes. Dr. Foster has been retained in numerous expert witness and consulting engagements across the United States, involving civil litigation matters such as employment disputes, psychological injury claims, and organizational assessments. Her Doctorate in Psychology from the University of Southern California, along with certifications such as the Certified Clinical Trauma Professional (CCTP), reinforce her ability to deliver objective, defensible analyses. She is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving psychological disorders and trauma.