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Expert Witness Directory

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

Showing 343360 of 1,760 experts

Oil and Gas

Gregory A. Barnes, P.E.

Expert Witness

Houston, Texas30+ years+ yrs8.7

Gregory A. Barnes, P.E. is an oil and gas expert specializing in appraisal and valuation within the upstream sector. With a career spanning strategic leadership, engineering management, and asset development, he brings a comprehensive framework for evaluating complex industry disputes. His work centers on investigating reservoir engineering practices, assessing asset valuations, and evaluating whether reserves reporting aligns with industry standards. Mr. Barnes has been retained in numerous expert witness and consulting engagements across the United States, involving oil and gas asset valuation, reservoir engineering, and enhanced oil recovery cases. His Master of Science in Petroleum Engineering from Texas A&M University, along with his Registered Professional Engineer certification in Texas, 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 unconventional reservoirs and development demands.

Appraisal & Valuation
Trucking and Transportation

John Ross

Heavy Vehicle Specialist / Expert Witness

Tucson, AZ46 years+ yrs8.7

John Ross is a heavy vehicle specialist expert specializing in commercial motor vehicle cases. With a career encompassing extensive experience in trucking safety standards, driver training, and hazardous materials transport, he brings a comprehensive understanding of industry regulations and practices to his litigation work. His work centers on investigating truck driver actions and reactions, assessing compliance with Federal Motor Carrier Safety Regulations, and evaluating whether proper safety and maintenance protocols were followed. Mr. Ross has been retained in numerous expert witness and consulting engagements across the United States, involving commercial motor vehicle accidents, hazardous materials transport, and oversized load handling. His certifications as a Certified Classroom Instructor for Defensive Driving and a Licensed Private 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 standard of care in disputes involving trucking and transportation safety.

Truck Driver Actions, Reactions, Responsibilities, Qualifications and TrainingOperation, Inspection and Maintenance of Tractor-TrailersOversized Load Handling+1
Police Practices & Procedures

John A. Campanella

SHRM-SCP

Newark, Delaware32 years+ yrs8.7

John A. Campanella, SHRM-SCP is a workplace employment investigations expert specializing in law enforcement policy and procedure, hiring/retention, discipline/performance, and accreditation. With a career spanning human resource management, compliance monitoring, and internal and external investigations, he brings a strategic leadership perspective to his litigation work. His work centers on investigating compliance with law enforcement standards, assessing human resource management practices, and evaluating whether organizational policies align with accreditation requirements. Mr. Campanella has been retained in numerous expert witness and consulting engagements across the United States, involving law enforcement agencies, corporate human resources, and compliance monitoring. His Master of Science in Management in Organizational Leadership, along with his Senior Certified Professional designation from the Society for Human Resource Management, 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 law enforcement practices and human resource management.

Law Enforcement & Criminal JusticePolicy/Procedure DevelopmentHuman Resource Management+4
Digital Forensics

Avery Thompson

Principle Consultant

Knoxville, Tennessee20 years+ yrs8.7

Avery Thompson is a digital forensics expert specializing in complex digital evidence analysis and strategic case review. With a career spanning law enforcement, telecommunications analysis, and criminal investigations, he brings a multifaceted investigative framework to his litigation work. His work centers on investigating digital communication patterns, assessing cellular data for forensic relevance, and evaluating whether telecommunications records align with case facts. Mr. Thompson has been retained in numerous expert witness and consulting engagements across the United States, involving cases of digital forensics, drug distribution, and telecommunications analysis. His Business Administration degree from the University of Alaska-Fairbanks, along with certifications such as Cellebrite Certified Operator and Cellebrite Certified Physical Analyst, 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 mobile device forensics and digital evidence interpretation.

Law Enf & Criminal JusticeCriminal InvestigationsTelecommunications Analysis
Athletics & Recreation

Wm. Wayne Evans

Expert Witness

Savannah, GA32 years+ yrs8.7

Wm. Wayne Evans is an athletics and recreation expert specializing in gymnastics and cheerleading litigation. With a career spanning coaching, training, and software development, he brings a multifaceted perspective to his litigation work. His work centers on investigating standard of care in athletic environments, assessing safety protocols in gymnastics and cheerleading, and evaluating whether industry standards were met in performance and training settings. Mr. Evans has been retained in numerous expert witness and consulting engagements across the United States and Europe, involving gymnastics, cheerleading, and athletic safety cases. His Associate of Arts in Communication, along with certifications such as National Safety Certification — USA Gymnastics and Safety & Liability Certification — National Cheerleaders Association, 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 gymnastics and cheerleading safety.

TechnologyGymnasticsCheerleading+2
Building Inspection and Construction Defects

Justin D. Watts

Certified Building Inspector • Expert Witness • Consultant

Rancho Santa Margarita, CA26 years+ yrs8.7

Justin D. Watts, ICC Residential and Commercial Building Inspector is a building inspection and construction defects expert specializing in home inspector standards of care in real estate transactions. With a career spanning real estate home inspections, code enforcement, and municipal building compliance, he brings a comprehensive framework to litigation work involving construction defect analysis. His work centers on investigating construction defects, assessing building code compliance, and evaluating whether inspection standards of care have been met. Mr. Watts has been retained in numerous expert witness and consulting engagements across California, involving real estate transactions, construction defect cases, and code compliance disputes. His Bachelor’s of Science in 1999, along with certifications such as California Commercial Building Inspector and California Residential Building 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 standards of care in disputes involving building inspection and construction defects.

Real Estate Home InspectionsUniform Building Code InspectionsConstruction Defect Investigations+1
Aviation & Aerospace

Peter J. Denucci

Distinguished DoD-Cleared UAV Pilot

San Diego, CA43 years+ yrs8.7

Peter J. Denucci, Distinguished DoD-Cleared UAV Pilot is an aviation & aerospace expert specializing in mission assurance and risk management. With a career encompassing leadership roles in safety management systems, human factors, and quality assurance, he brings a strategic perspective to litigation work. His work centers on investigating compliance with safety standards, assessing risk management protocols, and evaluating whether mission assurance processes meet contractual and regulatory requirements. Mr. Denucci has been retained in numerous expert witness and consulting engagements across the United States, involving aviation safety, unmanned aircraft systems, and regulatory compliance cases. His B.S. in Aeronautical Science, along with certifications such as Airline Transport Pilot (ATP) and FAA Advanced Ground Instructor (AGI), 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 aviation safety and operational compliance.

Human FactorsMission Assurance & Risk ManagementSMS/Just Culture+18
Traffic Engineering

Jeffrey Sanchez

PE, PTOE

Mesa, AZ20+ years+ yrs8.7

Jeffrey Sanchez, PE, PTOE is a traffic engineering expert specializing in forensic investigations related to traffic control and roadway design. With a career spanning traffic operations, highway construction project management, and forensic analysis, he brings a multifaceted perspective to litigation work. His work centers on investigating traffic signal timing, assessing roadway distress and failure, and evaluating whether ADA compliance standards have been met. Mr. Sanchez has been retained in numerous expert witness and consulting engagements across the United States, involving traffic engineering, roadway design, and construction cases. His Bachelor of Science in Civil Engineering from the United States Coast Guard Academy, along with his Professional Traffic Operations Engineer (PTOE) 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 responsibility in disputes involving traffic control and roadway design.

Traffic Signal TimingRoadway Design and ConstructionTemporary and Permanent Traffic Control+19
Event Recorder

Robert T. McCarthy

Rail Safety and Operations Executive

Rio Rico, AZ20+ years+ yrs8.7

Robert T. McCarthy is a rail safety and operations expert specializing in litigation involving Positive Train Control (PTC) design and contractor liability. With a career spanning strategic leadership in rail operations, regulatory compliance, and safety program development, he brings a comprehensive framework for analyzing systemic risk and regulatory alignment. His work centers on investigating PTC system implementations, assessing contractor liability, and evaluating compliance with federal rail safety regulations. Mr. McCarthy has been retained in numerous expert witness and consulting engagements across the United States, involving complex rail litigation and regulatory compliance cases. His Bachelor of Science in Business Administration, along with certifications such as Locomotive Engineer Class I Certified and NTSB Academy Graduate, 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 rail safety and operations.

Locomotive GE/EMDPositive Train ControlTrain make-up+20
Civil Engineering

Hesham Ali, Ph.D., PE

President-Senior Engineer

Sunrise, Florida36 years+ yrs8.7

Hesham Ali, Ph.D., PE, CPM is a civil engineering expert specializing in infrastructure design, construction management, and geotechnical engineering litigation. With a career spanning artificial intelligence, robotics, and pavement engineering, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating construction defects, assessing compliance with engineering standards, and evaluating whether proper construction management protocols were followed. Mr. Ali has been retained in numerous expert witness and consulting engagements across Florida, involving cases related to infrastructure design, construction management, and geotechnical engineering. His Ph.D. in Engineering from The City University of New York, along with certifications such as Certified Public Manager (CPM) and Licensed Professional Engineer in Florida, 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 road construction, pavement engineering, and construction quality assurance.

Construction EngineeringArtificial IntelligenceRobotics+8
Mechanical Engineering

Mike Simard

PE, PMP, CEP

Berwyn, PA30+ years+ yrs8.7

Mike Simard, PE, PMP, CEP is a mechanical engineering expert specializing in equipment failure, design defects, and industrial safety matters. With a career spanning industrial machinery, process design, and manufacturing systems, he brings a technical leadership framework to litigation work. His work centers on investigating mechanical failures, assessing design defects, and evaluating whether industrial safety standards were met. Mr. Simard has been retained in numerous expert witness and consulting engagements across the United States, involving industrial machinery performance, manufacturing systems, and process design disputes. His Master of Science in Mechanical Engineering, along with certifications as a Certified Project Management Professional (PMP) and Certified Estimating Professional (CEP), 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 systems and industrial safety.

DesignProcess EngineeringIndustrial Machinery+21
Fire and Safety

Phillip A. Keena

Practice Leader, Fire Protection

Lenexa, KS33 years+ yrs8.7

Phillip A. Keena, IAAI-CFI, BsFP SET is a fire protection and safety expert specializing in fire and explosion investigations. With a career encompassing fire protection engineering, code consulting, and failure analysis, he brings a comprehensive understanding of fire safety systems and their compliance with industry standards to his litigation work. His work centers on investigating fire origins and causes, assessing compliance with fire safety codes, and evaluating whether fire protection systems functioned as intended. Mr. Keena has been retained in numerous expert witness and consulting engagements across the Midwest, involving residential and commercial fire cases, fire suppression systems, and fire alarm systems. His B.S. in Fire Protection and Safety Engineering Technology, along with certifications such as Certified Fire Investigator through the IAAI and licenses in multiple states, 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 fire protection systems and safety compliance.

Fire suppression systemsFire alarm systemsLife safety systems+5
Real Estate

Gregory M. Libby

MBA

San Diego, CA31 years+ yrs8.7

Gregory M. Libby, MBA is a real estate expert specializing in commercial and residential real estate litigation. With a career spanning real estate management, development, and REIT operations, he brings a multifaceted perspective to his litigation work. His work centers on investigating real estate transactions, assessing property management practices, and evaluating whether industry standards have been met. Mr. Libby has been retained in numerous expert witness and consulting engagements across California, involving cases related to commercial real estate, REITs, and property management. His Master of Business Administration in Business Economics, along with his California Real Estate Broker License, 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 commercial real estate and property management.

Property Management
Biomechanics

Jonathan S. Lee-Confer, Ph.D.

Assistant Professor

Tucson, AZ11 years+ yrs8.7

Jonathan S. Lee-Confer, Ph.D., C.E.P. is a biomechanics expert specializing in slip, trip, and fall biomechanics and premises liability. With a career encompassing biomechanics, kinesiology, and safety standards, he brings a multidisciplinary approach to litigation work. His work centers on investigating slip and fall incidents, assessing floor slip resistance, and evaluating compliance with safety standards. Mr. Lee-Confer has been retained in numerous expert witness and consulting engagements across the United States, involving premises liability and safety standards in various industries. His Ph.D. in Biokinesiology from the University of Southern California, along with certifications such as Certified Exercise Physiologist and Occupational Safety and Health Administration 30 General, 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 slip resistance and safety compliance.

Premises LiabilityKinesiology
damages

Robert H. Alexander

CPA/ABV/CFF, ASA

Oxford, MississippiOver 25 years+ yrs8.7

Robert H. Alexander, CPA/ABV/CFF, ASA is a litigation support and business valuation expert specializing in financial, business, and economic damage analysis. With a career spanning roles in fraud investigation, forensic accounting, and expert testimony, he brings a multifaceted perspective to complex litigation matters. His work centers on investigating economic damages, assessing business valuations, and evaluating whether accounting standards have been met. Mr. Alexander has been retained in numerous expert witness and consulting engagements across Mississippi, Tennessee, Alabama, and Arkansas, involving cases such as accounting malpractice, economic damages, and business interruption. His Bachelor of Accountancy from the University of Mississippi, along with certifications as a Certified Public Accountant (CPA), Accredited in Business Valuation (ABV), Accredited Senior Appraiser (ASA), and Certified in Financial Forensics (CFF), 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 business valuation and economic damages.

Intellectual propertyLost profitsChange of venue+14
Products Liability

Meyer R. Rosen

Forensic Litigation Expert

Bonita Springs, FLOver 40 years+ yrs8.7

Meyer R. Rosen, CPC, CChE, E-FAIC, FRSC, DABFET is a forensic litigation expert specializing in products liability, personal injury, and intellectual property cases. With a career encompassing chemical engineering, forensic analysis, and intellectual property, he brings a multifaceted perspective to litigation work. His work centers on investigating fires and explosions, assessing hazardous chemical exposures, and evaluating whether safety standards in product design and formulation were met. Mr. Rosen has been retained in numerous expert witness and consulting engagements across both Federal and State jurisdictions, involving cases related to consumer and industrial products, chemical burns, and toxic exposures. His M.S. in Chemical Engineering from the Polytechnic Institute of Brooklyn, along with certifications such as Certified Professional Chemist and Certified Fire & Explosion Investigator (Emeritus), 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 chemical technology and safety compliance.

Chemical TechnologyAccident ReconstructionFires & Explosions+5
Estimating

Lane A. Feick

Owner Rep Consulting

Annapolis, MD36 years+ yrs8.7

Lane A. Feick, Registered Professional Engineer, ICA Inspection Certification, MDE Green Card for Erosion and Sediment Control is a construction claims and project management expert specializing in breaches of contract, differing site conditions, and construction defects. With a career spanning project management, cost control, and scheduling, he brings a strategic analytical framework to litigation work. His work centers on investigating claims, assessing project management practices, and evaluating whether contractual obligations were met. Mr. Feick has been retained in numerous expert witness and consulting engagements across Maryland, South Carolina, North Carolina, and Georgia, involving construction defects, claims, and breaches of contract. His BS in Civil Engineering from Bucknell University, along with his Registered Professional Engineer designation and other certifications, 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 construction project management and claims.

Project ManagementCost ControlClaims+8
Partnership and joint venture dispute issues

Michael K. Ryan

President

Encinitas, CA45+ years+ yrs8.7

Michael K. Ryan, MBA is a real estate litigation expert specializing in partnership and joint venture disputes, industry standards of care, and fiduciary duties. With a career spanning real estate development, brokerage, and consulting, he brings a comprehensive understanding of industry practices and standards to his litigation work. His work centers on investigating compliance with industry standards, assessing fiduciary responsibilities, and evaluating entitlement and development issues. Mr. Ryan has been retained in numerous expert witness and consulting engagements across Southern and Central California, as well as in Hawaii, Oregon, Colorado, Utah, Oklahoma, and Montana, involving real estate development and brokerage disputes. His Masters in Business Administration in Real Estate, along with California and Hawaii State Broker's Licenses and a California State Contractor’s License, 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 real estate transactions and development practices.

Industry standards of care, customs and practicesNon-compliance with Industry standards for fiduciary dutiesPartnership and joint venture fiduciary duties+27
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