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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 487504 of 1,760 experts

Plumbing

Kevin Hastings

P.E.

San Diego, CA24 years+ yrs8.5

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
Economics

Wade C. Roberts, Ph.D.

Senior Forensic Economist

Kaysville, Utah15+ years+ yrs8.5

Wade C. Roberts, Ph.D. is a forensic economics expert specializing in economic damages analysis. With a career encompassing econometric modeling, valuation, and expert testimony, he brings a robust analytical framework to litigation work. His work centers on investigating economic losses, assessing damages in wrongful death and personal injury cases, and evaluating business interruption claims. Dr. Roberts has been retained in numerous expert witness and consulting engagements across the United States, involving personal injury, commercial damages, and class action disputes. His Ph.D. in Economics, along with his extensive teaching 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 economic causation in disputes involving lost earnings, business damages, and class action matters.

Business DamagesEconomic damagesWrongful death and personal injury valuation+7
Computers and Information Technology

Joseph Greenfield

Vice President & Chief Forensic Examiner

Simi Valley, CA15 years+ yrs8.5

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
HVAC Systems

Joseph A. LaRovere

C.E.M.

Cave Creek, AZ35+ years+ yrs8.5

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
wiring

Lester Weitman

Engineering Consultant

Royal Oak, MI40 years+ yrs8.5

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
Anesthesiology

Omeed Khodaparast, M.D.

Anesthesiologist

Dallas, TX20 years+ yrs8.5

Omeed Khodaparast, M.D. is an anesthesiology expert specializing in regional anesthesia and airway management litigation. With a career encompassing leadership roles in medical direction and committee chairmanship, he brings a strategic perspective to evaluating complex anesthesiology cases. His work centers on investigating difficult intubation scenarios, assessing nerve injury risks, and evaluating whether postoperative care standards were met. Dr. Khodaparast has been retained in numerous expert witness and consulting engagements across Texas, involving cases related to anesthesiology practices and hospital operations. His Doctor of Medicine from the University of Texas Southwestern, along with Board Certification from the American Board of Anesthesiology, 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 sedation protocols and recovery room procedures.

Information Technology Director and Project Manager

Ivan Zatkovich

Intellectual Property Consulting & Patent Litigation

Tampa, FL30+ years+ yrs8.5

Ivan Zatkovich is an intellectual property consulting and patent litigation expert specializing in telecommunications and internet technology patents. With a career spanning information technology management, e-commerce, and telecommunications, he brings a strategic framework to evaluating complex patent portfolios and identifying potential prior art. His work centers on investigating patent validity, assessing market valuation, and evaluating licensing opportunities. Mr. Zatkovich has been retained in numerous expert witness and consulting engagements across the United States, involving telecommunications, internet, and software disputes. His B.A. and B.S. in Computer Science, along with his M.S. in Computer Networks, and certifications as a Certified e-Commerce Solutions Expert — IBM Websphere and CMM & PMP in project management methodologies, 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 telecommunications and internet technologies.

Publishing / Content ManagementInternet and e-CommerceTelecommunications+7
Pharmacist

Nicholas Ladikos

PharmD, FASCP, BCPS, BCGP, BCIDP

Coppell, TX8.5

Nicholas Ladikos, PharmD, FASCP, BCPS, BCGP, BCIDP is a pharmacy and pharmacology expert specializing in pharmaceutical negligence and fraud litigation. With a career spanning clinical pharmacy, infectious diseases, and geriatric pharmacotherapy, he brings a multi-faceted perspective to litigation work. His work centers on investigating adverse drug reactions, assessing medication errors, and evaluating whether standards of care in pharmacy practice have been met. Mr. Ladikos has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to drug interactions, compounding, and pharmaceutical malpractice. His Doctor of Pharmacy from the University of Florida, along with certifications such as Board Certified Infectious Diseases Pharmacist (BCIDP) and Board Certified Geriatric Pharmacist (BCGP), 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 drug safety and pharmacy standards.

Geriatrics
Waste Engineering

Joseph M. DeFranco

Certified Safety Professional

Raleigh, NC27 years+ yrs8.5

Joseph M. DeFranco, CSP is a Safety and OSHA Compliance expert specializing in accident investigations and construction safety litigation. With a career encompassing diverse safety program development and regulatory compliance, he brings a comprehensive understanding of industry standards to his litigation work. His work centers on investigating safety violations, assessing compliance with OSHA standards, and evaluating whether industry best practices were followed. Mr. DeFranco has been retained in numerous expert witness and consulting engagements across the United States, involving construction safety, crane operations, and personal injury cases. His Bachelor of Science in Safety, Health, and Environmental Applied Sciences, along with certifications such as Board Certified Safety Professional and NCCCO Certified Crane 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 occupational safety and health policies and standards.

Geotechnical EngineeringEnvironmental Due DiligenceSafety and OSHA+22
Human Factors

Brian C. Grieser

Practice Leader

Ann Arbor, MI36 years+ yrs8.5

Brian C. Grieser, P.E., C.P.S.M., CSP, CPE is a Human Factors and Premises Liability expert specializing in product safety and slip resistance litigation. With a career spanning naval architecture, marine engineering, and industrial operations, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating walkway slip resistance, assessing recreational boat design safety, and evaluating human movement and stability in various environments. Mr. Grieser has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to product liability, premises safety, and recreational watercraft design. His M.S.E. in Industrial and Operations Engineering, along with certifications as a Certified Product Safety Manager, Certified Safety Professional, and Certified Professional Ergonomist, 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 human factors.

Premises LiabilityWalkway slip resistanceRecreational boat design+7
Property management

Steven Edrington

CCIM, CPM, CFLC

Oakland, CA25 years+ yrs8.5

Steven Edrington, CCIM, CPM, CFLC is a real estate and property management expert specializing in litigation concerning evictions, warranty of habitability, damages, and standards of care for brokers and property managers. With a career encompassing property management, real estate brokerage, and construction oversight, he brings a multifaceted perspective to litigation work. His work centers on investigating landlord/tenant disputes, assessing property management practices, and evaluating whether standards of care have been met. Mr. Edrington has been retained in numerous expert witness and consulting engagements throughout California, involving landlord/tenant disputes, HOA disputes, and real estate malpractice cases. His Bachelor of Science in Finance from Golden Gate University, along with certifications such as Certified Forensic Litigation Consultant, Certified Commercial Investment Member, and Certified Property Manager, 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 real estate transactions and property management.

BrokerAgentLandlord/tenant+19
Engineering

Michael A. Pollock

Principal Engineer, Patent Expert

Bryn Mawr, PA25 years+ yrs8.5

Michael A. Pollock, P.E. is an engineering and construction defects expert specializing in mechanical engineering, HVAC systems, and construction schedule analysis. With a career spanning engineering standards, project management, and facility design, he brings a comprehensive framework to litigation work involving complex construction and engineering disputes. His work centers on investigating construction defects, assessing mechanical system failures, and evaluating whether standard of care deviations occurred. Mr. Pollock has been retained in numerous expert witness and consulting engagements across the United States, involving construction defect claims, HVAC system failures, and patent-related disputes. His B.S. in Mechanical Engineering from Drexel University, along with certifications such as Professional Engineer (PA) and Certified Energy Manager (CEM), 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 engineering and construction management.

Construction DefectsProject ManagementConstruction Management+1
Accident Reconstruction

Kevin William Forcier SR

Reconstruction Specialist, ACTAR 2054

Venango, Pennsylvania38 years+ yrs8.5

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.

Crash ReconstructionAirbag AnalysisChild Passenger Safety
Cybersecurity

Bruce Schneier

Security Technologist

Cambridge, MA39 years+ yrs8.5

Bruce Schneier is a cybersecurity expert specializing in cryptography, internet security, and privacy. With a career spanning roles in security architecture, technology leadership, and academic research, he brings a multifaceted perspective to litigation work. His work centers on investigating security breaches, assessing cryptographic vulnerabilities, and evaluating whether privacy protocols meet industry standards. Mr. Schneier has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to cybersecurity breaches, privacy violations, and cryptographic integrity. His MS in Computer Science from American University, along with his extensive board memberships and academic affiliations, 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 and privacy issues.

Information Technology
AI Expert

Randy Winters

Expert Witness

Saint George, Utah47 years+ yrs8.5

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
Energy

Joseph Jaskulski

Senior Executive

Chicago, Illinois46 years+ yrs8.5

Joseph Jaskulski, P.E. is an infrastructure development and power generation expert specializing in construction management and energy efficiency litigation. With a career spanning infrastructure projects, power plant operations, and asset management, he brings a strategic perspective to evaluating complex technical and commercial disputes. His work centers on investigating construction defects, assessing power generation efficiency, and evaluating whether industry standards have been met. Mr. Jaskulski has been retained in numerous expert witness and consulting engagements across the United States and internationally, involving high-profile construction projects and power generation facilities. His Master of Science in Mechanical and Aerospace Engineering, along with certifications such as LEED Accredited 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 infrastructure and energy systems.

Failure AnalysisInfrastructure DevelopmentConstruction Management+1
Statistics

Aleksandr Aravkin

Associate Professor of Applied Mathematics

Seattle, WA13 years+ yrs8.5

Aleksandr Aravkin, Ph.D., M.S. is an applied mathematics expert specializing in statistical modeling and continuous optimization. With a career encompassing roles in academia and research leadership, he brings a multidisciplinary approach to litigation work, integrating insights from mathematical sciences and data analytics. His work centers on investigating statistical methodologies, assessing optimization frameworks, and evaluating whether data-driven models meet industry standards. Mr. Aravkin has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to epidemiology, business interruption, and medical malpractice. His Ph.D. in Mathematics, along with his M.S. in Statistics, 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 complex data analysis and statistical modeling.

Continuous OptimizationVariational AnalysisStatistical Modeling
Railroad Crossings

Robert W. Halstead

Railroad Signal and Accident Reconstruction Expert

Syracuse, NY8.5

Robert W. Halstead, A.S., B.S. is a Railroad Signal and Accident Reconstruction Expert specializing in railroad crossings, signal systems, and accident reconstruction. With a career encompassing roles in signal circuit design, construction supervision, and maintenance oversight, he brings a comprehensive understanding of the operational and safety standards critical to railroad litigation. His work centers on investigating signal system failures, assessing accident causation, and evaluating compliance with federal and industry regulations. Mr. Halstead has been retained in numerous expert witness and consulting engagements across the United States, involving cases such as train-vehicle collisions, derailments, and signal system adequacy. His B.S. in Electrical Engineering, along with his accreditation as a Traffic Accident Reconstructionist by the Accreditation Commission for Traffic Accident Reconstruction (ACTAR), 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 railroad signal systems and accident reconstruction.

Signal SystemsAccident Reconstruction
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