Witnessly LogoWitnessly
HomeExpertsAbout UsContact
Start a Search
Witnessly
Witnessly
Witnessly

Expert witnesses. Matched instantly — with judgement, transparency, and control.

Company

  • About Us

Legal

  • Privacy Policy
  • Terms of Service

Stay Updated

Get the latest updates on new features and legal tech insights.

© 2026 Witnessly. All rights reserved.

PrivacyTerms
All systems operational
Witnessly LogoWitnessly
HomeExpertsAbout UsContact
Start a Search
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 487–504 of 1,756 experts

AI-powered search
Economics
WC

Wade C. Roberts, Ph.D.

Senior Forensic Economist

Kaysville, Utah15+ years+ yrs★ 8.5

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
View Profile
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
View Profile
Pharmacist
NL

Nicholas Ladikos

PharmD, FASCP, BCPS, BCGP, BCIDP

Coppell, TX★ 8.5

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
View Profile
Software Engineering
BS

Bert Schiettecatte

Senior Software & Hardware Engineer, Computer Scientist, Expert Witness

Los Angeles, CA20+ years+ yrs★ 8.5

Bert Schiettecatte, MSc/CS, MA/MST is an intellectual property litigation expert specializing in software and hardware engineering disputes. With a career spanning software development, digital signal processing, and consumer electronics, he brings a multidisciplinary approach to his litigation work. His work centers on investigating software source code for patent infringement, assessing hardware systems for trade secret misappropriation, and evaluating whether breaches of contract have occurred. Mr. Schiettecatte has been retained in numerous expert witness and consulting engagements across the United States, involving intellectual property disputes in the software and electronics industries. His Master of Science in Computer Science, along with his Master of Arts in Music, Science and Technology, 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 software architecture and performance optimization.

ElectronicsTestifying expert witness with intellectual property litigation experienceSoftware source code review and analysis for intellectual property litigation+28
View Profile
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
View Profile
Human Factors
BC

Brian C. Grieser

Practice Leader

Ann Arbor, MI36 years+ yrs★ 8.5

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
View Profile
Information Technology Director and Project Manager
IZ

Ivan Zatkovich

Intellectual Property Consulting & Patent Litigation

Tampa, FL30+ years+ yrs★ 8.5

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
View Profile
Products Liability
PC

Paul Chen

Principal Consultant | Founder

Bentonville, AR23 years+ yrs★ 8.5

Paul Chen, MBA, BS, ASQ Certified Quality Improvement Associate is a consumer product safety and regulatory compliance expert specializing in products liability and risk management. With a career encompassing roles at consumer product goods manufacturers, a global third-party test lab, and the world's largest retailer, he brings a multifaceted perspective to litigation work. His work centers on investigating regulatory compliance, assessing product safety protocols, and evaluating whether industry standards have been met. Mr. Chen has been retained in numerous expert witness and consulting engagements across the United States, involving consumer product safety, regulatory compliance, and risk management cases. His Master of Business Administration in Business Information Systems, along with certifications in Product Risk Assessment and Product Safety 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 responsibility in disputes involving consumer product safety and compliance.

Risk Management
View Profile
Architecture
WN

William N. Bernstein

President

New York, NY43 years+ yrs★ 8.5

William N. Bernstein, AIA, NCARB, LEED®AP is an architecture and construction expert specializing in design and construction litigation. With a career spanning architecture, engineering, project management, and expert witness services, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating standard of care deviations, assessing premises liability, and evaluating compliance with architectural and engineering standards. Mr. Bernstein has been retained in numerous expert witness and consulting engagements across the United States, involving medical office buildings, hospitals, hotels, and residential properties. His Master of Architecture from Yale University, along with certifications such as LEED®AP, 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 and premises liability in disputes involving healthcare facilities, commercial properties, and residential developments.

ConstructionEngineeringProject Management+1
View Profile
Waste Engineering
JM

Joseph M. DeFranco

Certified Safety Professional

Raleigh, NC27 years+ yrs★ 8.5

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
View Profile
Property management
SE

Steven Edrington

CCIM, CPM, CFLC

Oakland, CA25 years+ yrs★ 8.5

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
View Profile
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
View Profile
Anesthesiology
OK

Omeed Khodaparast, M.D.

Anesthesiologist

Dallas, TX20 years+ yrs★ 8.5

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.

View Profile
Engineering
MA

Michael A. Pollock

Principal Engineer, Patent Expert

Bryn Mawr, PA25 years+ yrs★ 8.5

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
View Profile
Real Estate and Property Management
SD

Steven D. Epcar

Principal

Granite Bay, California35+ years+ yrs★ 8.5

Steve N. D. Epcar, CPM® is a real estate and property management expert specializing in litigation support for standard of care, partnership conflicts, and landlord/tenant disputes. With a career spanning organizational assessments, asset repositioning, and investment feasibility, he brings a comprehensive framework to litigation work. His work centers on investigating property management practices, assessing compliance with industry standards, and evaluating whether fiduciary duties have been upheld. Mr. Epcar has been retained in numerous expert witness and consulting engagements across the United States and Canada, involving residential, retail, commercial, condominium, and mixed-use properties. His BS Degree in Business with an emphasis in Real Estate, along with the Certified Property Manager (CPM) designation and IREM Managing Distressed Properties Certificate, 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 and property management issues.

Real EstateProperty Management
View Profile
Civil Engineering
MF

Michael F Myers

PE

Palmyra, VA30 years+ yrs★ 8.5

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.

Hydrology
View Profile
Accident Reconstruction
KW

Kevin William Forcier SR

Reconstruction Specialist, ACTAR 2054

Venango, Pennsylvania38 years+ yrs★ 8.5

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
View Profile
Railroad Crossings
RW

Robert W. Halstead

Railroad Signal and Accident Reconstruction Expert

Syracuse, NY★ 8.5

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
View Profile
Prev1···2627282930···98Next
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

Witnessly
Witnessly
Witnessly

Expert witnesses. Matched instantly — with judgement, transparency, and control.

Company

  • About Us

Legal

  • Privacy Policy
  • Terms of Service

Stay Updated

Get the latest updates on new features and legal tech insights.

© 2026 Witnessly. All rights reserved.

PrivacyTerms
All systems operational