Expert Witness Directory

Find the Right Expert
for Every Case

Browse our verified directory of expert witnesses spanning medicine, engineering, finance, and dozens of specialized fields.

MedicalEngineeringFinanceForensicPsychologyConstructionAccountingTechnology

Showing 91–108 of 208 experts

Clear filters
Structural Engineering
NM

Nick M. Bradford

PhD, PE SE SI LEED AP

Tampa, FL27 years+ yrs★ 8.5

Nick M. Bradford, PhD, PE SE SI LEED AP is a structural engineering expert specializing in structural failure and collapse analysis. With a career spanning structural design, forensic engineering, and building code analysis, he brings a comprehensive framework to litigation work involving complex structural issues. His work centers on investigating structural failures, assessing construction defects, and evaluating whether building codes were adhered to. Mr. Bradford has been retained in numerous expert witness and consulting engagements across the southeastern United States, involving residential, commercial, and industrial property cases. His PhD in Civil Engineering, along with certifications such as LEED AP and multiple state engineering licenses, 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 structural integrity and construction practices.

Construction EngineeringStructural Failure / CollapseStructural design+9
HVAC Systems
JA

Joseph A. LaRovere

C.E.M.

Cave Creek, AZ35+ years+ yrs★ 8.5

Joseph A. LaRovere, C.E.M. is an HVAC and mechanical systems expert specializing in litigation involving system failures, energy management, and contractor evaluation. With a career spanning roles as a contractor, owner/operator, technician, and consultant, he brings a multifaceted perspective to his litigation work. His work centers on investigating system failures, assessing contractor standards of care, and evaluating energy management and control systems. Mr. LaRovere has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to healthcare facilities, data centers, and high-rise buildings. His HVAC Electromechanical Technologies Certificate, along with certifications such as Certified Energy Manager and Honeywell Tridium Niagara AX, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving HVAC and mechanical system design and construction defects.

air conditioningheat pumpschiller plants+33
Plumbing
KH

Kevin Hastings

P.E.

San Diego, CA24 years+ yrs★ 8.5

Kevin Hastings, P.E. is an HVAC and plumbing systems expert specializing in forensic consulting and product testing and analysis. With a career spanning HVAC systems, plumbing systems, and fire protection systems, he brings a comprehensive engineering perspective to litigation work. His work centers on investigating system failures, assessing construction defects, and evaluating whether industry standards have been met. Mr. Hastings has been retained in numerous expert witness and consulting engagements across the United States, involving commercial, industrial, and residential construction defect cases. His Bachelor of Science in Mechanical Engineering, along with certifications such as Certified in Plumbing Design and Certified Fire Protection 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 HVAC, plumbing, and fire protection systems.

HVACHVAC systemsPlumbing systems+3
Forensic toxicology
DM

Dr. Marc A LeBeau

Board-Certified Toxicologist

O'Fallon, MOOver 35 years+ yrs★ 8.5

Dr. Marc A LeBeau, Board-Certified Toxicologist is a forensic toxicology expert specializing in drug-facilitated sexual assault and seized drugs analysis. With a career spanning forensic science, criminalistics, and analytical testing, he brings a comprehensive understanding of toxicological principles to his litigation work. His work centers on investigating drug-related incidents, assessing toxicological evidence, and evaluating whether substances contributed to alleged criminal activities. Dr. LeBeau has been retained in numerous expert witness and consulting engagements across the United States, involving cases of drug abuse, human trafficking, and DUI testing. His Doctor of Philosophy in Toxicology from the University of Maryland - Baltimore, along with his Board Certified Fellow status with the American Board of Forensic Toxicology, 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 forensic toxicology.

Seized drugs analysisGeneral unknown analysisDrug-Facilitated Sexual Assault
wiring
LW

Lester Weitman

Engineering Consultant

Royal Oak, MI40 years+ yrs★ 8.5

Lester Weitman, BSEE, MS, 6-Sigma Black Belt is an Automotive Electrical Systems expert specializing in failure analysis and forensic engineering. With a career spanning electrical product design, testing, and field failure analysis, he brings a systems-thinking framework to litigation work. His work centers on investigating electrical failures, assessing design flaws, and evaluating whether assembly errors contributed to automotive incidents. Mr. Weitman has been retained in numerous expert witness and consulting engagements across the United States, involving automotive product liability and defect cases. His BSEE in Electrical Engineering from the Massachusetts Institute of Technology, along with certifications in 6-Sigma Black Belt and Failure Mode & Effects Analysis, 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 automotive electrical systems.

electricalfiredefect+19
Computers and Information Technology
JG

Joseph Greenfield

Vice President & Chief Forensic Examiner

Simi Valley, CA15 years+ yrs★ 8.5

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.

Digital ForensicsCybersecurity
Psychology
DF

Deanna Foster, Ph.D.

Psychologist and President

Castle Rock, CO30 years+ yrs★ 8.5

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.

Forensic PsychologyPsychological DisordersTrauma+5
Cryptocurrency
GH

Garren Hamilton

Cryptocurrency and Cybercrime Investigations Expert

San Francisco, CA25 years+ yrs★ 8.5

Garren Hamilton, M. Cyb, B. Com, CFE, CSS, CAMS, AFHEA is a cryptocurrency and cybercrime investigations expert specializing in cryptocurrency tracing, fraud, and complex financial investigations. With a career spanning law enforcement leadership, private sector consultancy, and academic instruction, he brings a multifaceted perspective to litigation work. His work centers on identifying and valuing cryptocurrencies, forensic tracing of cryptocurrency transactions, and evaluating whether cryptocurrency-related fraud has occurred. Mr. Hamilton has been retained in numerous expert witness and consulting engagements across Australia, the USA, and the UK, involving cryptocurrency fraud, cybercrime, and financial investigations. His Master of Cyber Security from the University of New South Wales, along with certifications such as Certified Fraud Examiner (CFE) and Certified AML Specialist (CAMS), reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving cryptocurrency exchange records and fraud.

FraudIdentifying and valuing cryptocurrenciesForensic tracing of cryptocurrency transactions+3
Information Technology and Computers
WS

Wayne S. Josleyn

Digital Forensics Expert and Data Recovery Engineer

Boise, ID★ 8.5

Wayne S. Josleyn, EnCE, CCE, CDRS, MCP, OFE is a digital forensics expert specializing in data recovery and forensic investigations. With a career encompassing digital evidence analysis, data recovery engineering, and forensic methodology development, he brings a comprehensive technical framework to litigation work. His work centers on investigating digital evidence authenticity, assessing data recovery possibilities, and evaluating whether forensic procedures meet industry standards. Mr. Josleyn has been retained in numerous expert witness and consulting engagements across the United States and Canada, involving cases such as embezzlement, cyberstalking, and trade secret theft. His Master of Science in Digital Forensic Science from Champlain College, along with certifications such as EnCase Certified Examiner (EnCE) and Certified Data Recovery Specialist (CDRS), reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving digital forensics and data integrity.

Digital ForensicsData Recovery
AI Expert
RW

Randy Winters

Expert Witness

Saint George, Utah47 years+ yrs★ 8.5

Randy Winters, SRVB is a technology and patent infringement expert specializing in complex litigation involving AI, machine learning, and software engineering. With a career encompassing technical management, patent drafting, and AI development, he brings a multifaceted perspective to litigation work. His work centers on investigating patent claims, assessing software engineering practices, and evaluating whether AI systems meet industry standards. Mr. Winters has been retained in numerous expert witness and consulting engagements across the United States, involving high-profile technology cases with companies like Apple, Samsung, and Google. His Master’s Degree in Software Engineering from Carnegie Mellon University, along with his extensive patent experience, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of claim construction and infringement in disputes involving AI and software technologies.

ChatGPTBiometric PrivacyBIPA+19
DUI
SL

Samuel Louis Kleinman, Ph.D.

Fellow – American Board of Forensic Toxicology

Cincinnati, OH18 years+ yrs★ 8.5

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.

ToxicologyDrugsAlcohol+18
Forensic Science
DS

Deborah Stonebarger

Criminalistics Subject Matter Expert

Laveen, AZ25 years+ yrs★ 8.4

Deborah Stonebarger, BS is a Criminalistics Subject Matter Expert specializing in forensic science and crime scene investigation. With a career encompassing forensic firearms analysis, DNA and biological fluids, and controlled substances, she brings a multidisciplinary approach to her litigation work. Her work centers on investigating crime scenes, assessing evidence integrity, and evaluating whether forensic procedures adhere to industry standards. Ms. Stonebarger has been retained in numerous expert witness and consulting engagements across California and Arizona, involving criminal defense cases, forensic laboratory audits, and evidence collection disputes. Her Bachelor of Science in Biological Sciences with a minor in Chemistry, along with her certification in Comprehensive Criminalistics, Diplomate status from the American Board of Criminalistics, 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 forensic evidence and crime scene investigations.

Firearms & BallisticsCrime Scene InvestigationEvidence Collection and Analysis+7
Biomedical Engineering
EA

Eric A. Bharucha

Biomedical Systems Expert - 25+ Yrs, 10 Patents

St-Augustin-de-Desmaures, Québec32 years+ yrs★ 8.4

Eric A. Bharucha, M.Sc., B.Eng., B.Sc., P.E. is a biomedical systems expert specializing in medical device development and regulatory compliance. With a multidisciplinary career encompassing electrical engineering, microbiology, and systems integration, he brings a comprehensive framework to his litigation work. His work centers on investigating electronic system failures, assessing regulatory compliance pathways, and evaluating whether design deviations impact device safety. Mr. Bharucha has been retained in numerous expert witness and consulting engagements worldwide, involving medical devices, aerospace systems, and advanced sensor technologies. His M.Sc. in Electrical Engineering, along with his Professional Engineer (P.E.) designation, 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 electronic system failures and regulatory compliance.

Electrical EngineeringMedical Device Development & Regulatory Compliance (FDA/CE pathways)Electronic System Failure Analysis & Forensic Investigation+8
Epidemiology
LS

Lawrence S. Mayer

MD, MS, PhD

Laguna Beach, CA50 years+ yrs★ 8.4

Lawrence S. Mayer, MD, MS, PhD is an epidemiology and biostatistics expert specializing in the application of statistical methods in public health and clinical medicine. With a career spanning biostatistics, epidemiology, and public health policy, he brings a multidisciplinary perspective to litigation work. His work centers on investigating the health effects of preventive interventions, assessing statistical issues in evidence-based medicine, and evaluating the application of epidemiological models in clinical settings. Dr. Mayer has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to clinical trials, product liability, and environmental epidemiology. His PhD in Mathematics (Statistics and Biostatistics), along with his MB Certificate (British MD) and MS in Mathematics, 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 epidemiological studies and statistical evaluations.

BiostatisticsClinical TrialsModel Validation & Evaluation+22
Product failure analysis involving water loss, fire & explosions, accidents, & forensic investigations.
JQ

Joseph Quinn, M.S., P.E.

Expert Witness

Los Angeles, CA20+ years+ yrs★ 8.4

Joseph Quinn, M.S., P.E. is a materials engineering and failure analysis expert specializing in product failure analysis involving water loss, fire and explosions, accidents, and forensic investigations. With a career spanning material failures due to abuse/misuse, application, design, environment, fabrication, installation, maintenance, manufacturing, and processing, he brings a comprehensive framework to litigation work. His work centers on investigating product failures, assessing material degradation, and evaluating whether engineering design standards were met. Mr. Quinn has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to construction defects, product liability, and mechanical failures. His Master of Science in Materials Engineering, along with his Licensed Professional Engineer designation in Metallurgical Engineering, 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 product design and material integrity.

Material failures due to abuse/misuse, application, design, environment, fabrication, installation, maintenance, manufacturing, & processing.Fracture analysis of Metals, Plastics & GlassCorrosion & Degradation+23
Accident Reconstruction
DH

Daniel Holmes

Crash Reconstructionist-Forensic Mapper, CDR Analyst-Technician

Eagle Lake, MN38 years+ yrs★ 8.4

Daniel Holmes, A.C.T.A.R. #2455 is a crash reconstruction expert specializing in forensic mapping and CDR analysis. With a career spanning accident investigation, forensic mapping, and crash data retrieval, he brings a robust analytical framework to litigation work. His work centers on investigating crash dynamics, assessing vehicle and scene data, and evaluating whether industry standards were met. Mr. Holmes has been retained in numerous expert witness and consulting engagements across Minnesota, involving cases related to vehicle collisions, pedestrian accidents, and commercial vehicle incidents. His Bachelor Degree of Science in Law Enforcement, along with certifications such as Full Accreditation - Traffic Accident Reconstructionist and MN Licensed Peace Officer, 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 reconstruction and forensic mapping.

Crash ReconstructionForensic MappingCDR Analysis
Litigation technical support
JL

Jamie L. Petty-Galis, M. S., P.E.

Mechanical and Metallurgical Engineering Consultant

Southlake, Texas★ 8.4

Jamie L. Petty-Galis, M. S., P.E. is a forensic metallurgical and mechanical engineering expert specializing in material failure analysis and structural integrity assessment. With a career encompassing diverse material applications in industries such as aviation, biomedical, and oil and gas, she brings a multidisciplinary approach to her litigation work. Her work centers on investigating material failures, assessing structural integrity, and evaluating the root causes of system failures. Ms. Petty-Galis has been retained in numerous expert witness and consulting engagements across the United States, involving cases in aviation, oil and gas, and transportation industries. Her M.S. in Materials Science from The University of Texas at Arlington, along with her Texas Professional Engineer license, 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 complex material systems.

Metallic material failure analysisComposite material failure analysisPlastic material failure analysis+9
Slip Trip & Fall
W(

William (Will) Stoner

Certified Flooring Inspector & Instructor

Toney, AL45 years+ yrs★ 8.4

William (Will) Stoner, Certified Flooring Inspector & Instructor is a flooring inspection and forensic analysis expert specializing in slip, trip, and fall cases, as well as construction defects. With a career encompassing roles in installation, retail, and inspection, he brings a multifaceted perspective to litigation work, informed by his extensive experience in forensic flooring analysis and industry standards compliance. His work centers on investigating installation failures, assessing product defects, and evaluating whether maintenance protocols meet safety standards. Mr. Stoner has been retained in numerous expert witness and consulting engagements across the United States, involving residential and commercial flooring disputes, manufacturing defects, and safety compliance issues. His Bachelor's Degree in Marketing, along with certifications such as NFSI Walkway Auditor Safety Specialist and NWFA-CP Certified Wood Flooring Inspector, 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 flooring failures and safety evaluations.

Construction DefectsForensic flooring analysisResidential & commercial inspections+7
AI-Powered Matching

Need a smarter search?

Create a free account to access our AI-powered expert matching and save your searches for future cases.

Get Started Free

Trusted by law firms, insurers, and legal teams