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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.

MedicalEngineeringFinanceForensicPsychologyConstructionAccountingTechnology

Showing 415–432 of 1,756 experts

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Firearms & Ballistics
DP

Donald P. Redl, Jr.

Board Certified Investigator | Use-of-Force & Firearms Expert

Salt Point, NY30+ years+ yrs★ 8.6

Donald P. Redl, Jr., PCI, CFI-FTER is a Use-of-Force & Firearms expert specializing in complex civil and criminal litigation involving firearms training accidents and negligent security. With a career encompassing firearms instruction, scenario-based training, and executive security operations, he brings a multifaceted perspective to litigation work. His work centers on investigating lawful use-of-force incidents, assessing firearms training methodologies, and evaluating negligence in security operations. Mr. Redl has been retained in numerous expert witness and consulting engagements across the United States, involving cases of firearms training accidents and security negligence. His Professional Certified Investigator (PCI) and Certified Forensic Interviewer (CFI-FTER) 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 causation in disputes involving use-of-force and firearms training incidents.

SecurityUse-of-ForceFirearms Training+2
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Structural Engineering
CK

Christopher Klinga P.E.

Solar Product & Project Expert

Boulder, Colorado18 years+ yrs★ 8.6

Christopher Klinga P.E. is a solar structural engineering expert specializing in the structural analysis, integration, and performance of architectural solar solutions. With a career spanning solar product development, structural engineering, and photovoltaic system design, he brings a comprehensive understanding of solar integration challenges to litigation work. His work centers on investigating wind load analysis, assessing solar performance, and evaluating whether building code compliance has been met. Mr. Klinga has been retained in numerous expert witness and consulting engagements across the United States, involving solar PV systems, rooftop solar wind failures, and hybrid ballast systems. His Bachelor of Science in Mechanical Engineering from the University of Colorado, along with his Licensed Professional Engineer designation in Colorado, 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 solar performance and structural engineering.

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Engineering
JH

John H. Hamilton

MSME, PE

Mountainburg, AR33 years+ yrs★ 8.6

John H. Hamilton, MSME, PE is a mechanical engineering expert specializing in product liability, patent, and occupational safety litigation. With a career spanning engineering education, consulting, and industrial safety, he brings a comprehensive understanding of mechanical systems and safety protocols to his litigation work. His work centers on investigating equipment failures, assessing compliance with safety standards, and evaluating whether proper machine guarding and lockout-tagout procedures were followed. Mr. Hamilton has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to machinery safety, industrial accidents, and product defects. His Master of Science in Mechanical Engineering in Thermal Systems, along with his Professional Engineer license in Arkansas, 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 safety compliance.

Mechanical Engineering
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Refrigeration
JC

Jim Caylor

Consulting Mechanical Engineer

West Fork, AR45 years+ yrs★ 8.6

Jim Caylor, PE is a mechanical engineering expert specializing in NH3 and CO2 refrigeration systems used in process and cold storage applications. With a career spanning industrial refrigeration service, project engineering, and consulting, he brings a multifaceted perspective to litigation work. His work centers on investigating system design failures, assessing regulatory compliance, and evaluating operational safety in refrigeration systems. Mr. Caylor has been retained in numerous expert witness and consulting engagements across the United States and internationally, involving cases related to OSHA and EPA citations, OEM and contractor deficiencies, and refrigerant releases. His BSME in Mechanical Engineering from Arizona State University, along with his registration as a Professional Engineer in 19 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 and responsibility in disputes involving industrial refrigeration systems.

OSHANH3 and CO2 refrigeration systemsSystem design and design review+3
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Civil Engineering
H(

Honglong (Hong) Li

Ph.D, Professional Engineer, Civil

Honolulu, HI26 years+ yrs★ 8.6

Honglong (Hong) Li, Ph.D, Professional Engineer, Civil is a Traffic Engineering expert specializing in transportation policies and environmental impact studies. With a career spanning civil engineering, transportation planning, and public transit systems, he brings a comprehensive framework to litigation work involving complex transportation issues. His work centers on investigating traffic accidents, assessing transportation greenhouse gas emissions, and evaluating whether transportation management systems meet regulatory standards. Mr. Li has been retained in numerous expert witness and consulting engagements throughout Hawaii, involving traffic accidents, road maintenance fee disputes, and transportation greenhouse gas emissions. His Ph.D. in Civil and Environmental Engineering, along with his Professional Engineer license in Hawaii, 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 transportation safety and management systems.

Traffic EngineeringTransportation policiesCivil Rights Title VI/environmental justice+3
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Statistics
BE

Bruce E. Rodda, Ph.D., M.B.A.

Ph.D. Biostatistician, Clinical Trials Expert

Spicewood, TX54 years+ yrs★ 8.6

Bruce E. Rodda, Ph.D., M.B.A. is a biostatistics and clinical trials expert specializing in statistical analysis and design of clinical trials. With a career spanning pharmaceutical research, clinical operations, and strategic consulting, he brings a robust analytical framework to litigation work. His work centers on investigating statistical methodologies, assessing clinical trial designs, and evaluating regulatory compliance. Mr. Rodda has been retained in numerous expert witness and consulting engagements across the United States, involving pharmaceutical research and clinical trial evaluations. His Ph.D. in Biostatistics from Tulane University, along with his Accredited Professional Statistician (PStat) 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 clinical research and biostatistical evaluations.

Pharmaceutical ResearchBiostatisticsClinical Research
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HVAC & Mission-Critical Systems
TG

Tyler G. Colwell

Licensed Mechanical Engineer

Reno, Nevada35+ years+ yrs★ 8.6

Tyler G. Colwell, P.E. is a mechanical engineering expert specializing in HVAC and mission-critical systems, forensic engineering, and machinery failure analysis. With a career spanning HVAC design, mission-critical facilities infrastructure, and forensic diagnostics, he brings a first-principles analytical framework to litigation work. His work centers on investigating HVAC failures, assessing code compliance, and evaluating machinery diagnostics. Mr. Colwell has been retained in numerous expert witness and consulting engagements across the United States, involving data center cooling, code compliance disputes, and machinery diagnostics. His Bachelor of Science in Mechanical Engineering from Cal Poly State University, along with his Professional Engineer license in Nevada and NCEES Record, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving HVAC systems and mission-critical infrastructure.

Forensic EngineeringMachinery Failure AnalysisCode Compliance+2
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Law Enf & Criminal Justice
ML

Mickey L. Williams

Esq., M.P.A

Vonore, TN29 years+ yrs★ 8.6

Mickey L. Williams, Esq., M.P.A is a law enforcement and criminal justice expert specializing in use of force review, officer involved shootings, and internal affairs investigations. With a career spanning police leadership, legal practice, and academic instruction, he brings a multifaceted perspective to his litigation work. His work centers on investigating officer conduct, assessing policy compliance, and evaluating whether law enforcement actions align with established standards. Mr. Williams has been retained in numerous expert witness and consulting engagements across California, involving police practices, use of force incidents, and internal investigations. His Juris Doctorate in law, along with certifications such as Basic POST, Intermediate POST, and Executive POST, 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 law enforcement conduct and policy adherence.

Police Practices & ProceduresUse of Force Review/Policy/Best PracticesOfficer Involved Shootings+21
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Telecommunications
TL

Tal Lavian, Ph.D.

Telecommunications, Network Communications, Mobile Wireless, and Internet Technologies Expert

Encino, CA35 years+ yrs★ 8.6

Tal Lavian, Ph.D. is a telecommunications and network communications expert specializing in patent litigation and technology analysis. With a career spanning telecommunications systems, mobile wireless technologies, and Internet protocols, he brings a comprehensive framework to his litigation work. His work centers on investigating network protocol compliance, assessing telecommunications infrastructure, and evaluating whether mobile wireless standards have been met. Dr. Lavian has been retained in numerous expert witness and consulting engagements across the United States, involving cases with leading technology companies such as Amazon, LinkedIn, and Cisco Systems. His Ph.D. in Computer Science from UC Berkeley, along with his Certified IEEE-WCET - Wireless Communications Engineering Technologies 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 network communications and telecommunications technologies.

InternetNetwork communicationsInternet protocols+1
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Metals & Manufacturing Expertise
D“

David “Mac” McCracken

Steel and Specialty Metals Manufacturing Expert / Expert Witness

Houston, TX★ 8.6

David “Mac” McCracken, CMI/CQI is a metals manufacturing expert specializing in supplier quality engineering and inspection. With extensive experience across metals mills and metalworking operations, he brings a comprehensive understanding of the manufacturing processes and quality management systems critical to litigation work. His work centers on investigating manufacturing defects, assessing supplier quality compliance, and evaluating whether industry standards were adhered to in complex engineering disputes. Mr. McCracken has been retained in numerous expert witness and consulting engagements across the United States, involving aerospace, automotive, and nuclear industries. His education in Materials Science & Metallurgy, Physics, along with certifications such as Certified Mechanical Inspector (CMI) and Certified Quality Inspector (CQI), 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 metals manufacturing and quality assurance.

Quality ManagementInspection / Testing / Calibration
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Statistics
SP

Shawn P. Capser, Ph.D., P.E., PStat, CRE

Owner and Consultant

Monroe, Michigan★ 8.6

Shawn P. Capser, Ph.D., P.E., PStat, CRE is a reliability engineering expert specializing in statistical analysis and Six Sigma methodologies in litigation contexts. With a career spanning automotive engineering, statistical modeling, and reliability management, he brings a robust analytical framework to his litigation work. His work centers on investigating component and system reliability, assessing statistical process control, and evaluating whether failures align with industry standards. Mr. Capser has been retained in numerous expert witness and consulting engagements across the United States, involving automotive engineering and reliability engineering cases. His Doctor of Philosophy in Engineering, along with certifications such as Certified Reliability Engineer (CRE) and Accredited Professional Statistician (PStat®), 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 reliability and statistical assessments.

Automotive EngineeringReliability EngineeringSix Sigma
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Special education advocacy
DS

Dr. Steve C Imber, LLC

Special Education Expert

Fresh Meadows, NY48 years+ yrs★ 8.6

Dr. Steve C Imber, LLC is a special education expert specializing in special education advocacy and consultation for children with disabilities. With a career spanning nearly five decades, he brings a nuanced understanding of the educational and psychological needs of children with disabilities to his litigation work. His work centers on investigating compliance with the Americans with Disabilities Act (ADA), assessing educational accommodations, and evaluating whether educational institutions meet required standards for children with disabilities. Dr. Imber has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to the Americans with Disabilities Act, disability rights, and educational institutions. His doctoral degree from the Department of Educational Psychology with a focus on Emotional and Behavior Disorders at the University of Connecticut, along with certifications as a teacher of children and adolescents with disabilities, a school psychologist, and an administrator of special education, 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 special education and disability accommodations.

Consultation for children with disabilities
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Construction
CL

Chris Lavache

Construction Manager

El Cajon, CA47 years+ yrs★ 8.6

Chris Lavache, LEED AP is a construction management and litigation consulting expert specializing in construction defects, cost estimating, and project scheduling. With a career encompassing diverse roles in construction management, quality assurance, and litigation consulting, he brings a multifaceted perspective to his expert witness work. His work centers on investigating construction defects, assessing schedule delays, and evaluating cost estimation accuracy. Mr. Lavache has been retained in numerous expert witness and consulting engagements across the United States, involving commercial buildings, high-end residential properties, and public infrastructure projects. His Bachelor of Science in Construction Management from California State University, Chico, along with certifications such as LEED AP and ASTM Certified Property Condition Assessments, 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 construction management and scheduling issues.

Construction DefectsConstruction ManagementLitigation Consulting+2
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Cybersecurity
FH

Frederick Haggerty

Digital Forensics and Cybersecurity Expert

Sterling, VA28 years+ yrs★ 8.6

Frederick L. Haggerty, MSLS, CISSP®, CEREA, GREM, CDRE, CDRP, GCFA, Q/FE, FSO is a digital forensics and cybersecurity expert specializing in digital forensics, malware analysis, email investigations, and network intrusion responses. With a career spanning software development and legal studies in cybersecurity, he brings a multidisciplinary perspective to litigation work. His work centers on investigating digital breaches, assessing malware impacts, and evaluating whether security protocols were breached. Mr. Haggerty has been retained in numerous expert witness and consulting engagements across the United States, involving cases of business email compromises, extortion, and trade secret theft. His M.S. in Legal Studies in Cybersecurity and Data Privacy from Albany Law School, along with certifications such as Certified Information Systems Security Professional (CISSP®) and GIAC Certified Forensic Analyst (GCFA), 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.

ComputersDigital ForensicsMalware Analysis+2
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Engineering
DH

Donald Hopkins, Jr., P.E., FSFPE

Forensic Services & Litigation Support

Belcamp, MD32 years+ yrs★ 8.6

Donald Hopkins, Jr., P.E., FSFPE is a fire protection engineering expert specializing in forensic analysis and origin and cause analysis. With a career encompassing fire protection system design, code compliance, and standards development, he brings a comprehensive engineering perspective to litigation work. His work centers on investigating fire-related incidents, assessing fire protection system failures, and evaluating whether code compliance was achieved. Mr. Hopkins has been retained in numerous expert witness and consulting engagements across the United States, involving complex fire protection cases and system design disputes. His M.S. in Fire Protection Engineering, along with his registration as a Professional Fire Protection Engineer 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 code compliance.

FireForensic analysisOrigin and cause analysis+3
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Trusts & Estates
D(

Daniel (Dan) FitzPatrick

JD, TEP, MCIT

Greenwich, Connecticut30+ years+ yrs★ 8.6

Daniel (Dan) FitzPatrick, JD, TEP, MCIT is a fiduciary (trust & estate) duties and liabilities expert specializing in fiduciary litigation. With a career spanning fiduciary leadership roles at premier financial institutions, he brings a strategic perspective to litigation work involving complex trust and estate matters. His work centers on investigating fiduciary breaches, assessing trustee responsibilities, and evaluating whether industry standards have been met. Mr. FitzPatrick has been retained in numerous expert witness and consulting engagements across state and federal courts, involving fiduciary breach claims, trust administration disputes, and estate management cases. His JD from Vanderbilt University, along with his Master Certified Independent Trustee 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 responsibility in disputes involving fiduciary duty and trustee liability.

Dispute Resolution
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Slip Trip & Fall
BZ

Bill Zoetvelt

Flooring & Floor Mat Expert Witness/Inspector

Mokena, Illinois36 years+ yrs★ 8.6

Bill Zoetvelt is a flooring and floor mat expert specializing in slip, trip, and fall litigation. With a distinguished career in the flooring industry, he brings a comprehensive understanding of floor mat safety, installation practices, and moisture testing to his litigation work. His work centers on investigating hidden dangers of floor mats, assessing compliance with industry standards, and evaluating whether installation practices contributed to flooring failures. Mr. Zoetvelt has been retained in numerous expert witness and consulting engagements nationwide, involving residential, commercial, and industrial flooring cases. His high school diploma, along with certifications such as Certified Forensic Slip Expert and Certified Advanced Hard Wood 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 safety and installation practices.

Hidden Dangers of Floor MatsFlooring InspectionConsulting Services+10
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Equipment & Machinery
KL

Karl L. Linck

PE

Kohler, WI57 years+ yrs★ 8.6

Karl L. Linck, PE is a food process engineering expert specializing in packaging and processing equipment and systems litigation. With a career spanning technical consulting, engineering management, and industry-specific compliance, he brings a multifaceted perspective to legal matters involving food industry operations. His work centers on investigating equipment performance, assessing compliance with sanitary standards, and evaluating whether contract performance obligations have been met. Mr. Linck has been retained in numerous expert witness and consulting engagements across the United States, involving cases in the food processing and packaging industries. His MS in Engineering Management, along with his Professional Engineer certifications in WI, IL, AZ, CA, FL, and ID, 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 food process engineering and equipment compliance.

Food
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