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.

Medical Engineering Finance Forensic Psychology Construction Accounting Technology

Showing 127–144 of 208 experts

AI-powered search

Accident Reconstruction

TA

Tarek A. Omar, D.Sc.

Mechanical and Structural Engineering Leader

McLean, VA30+ years+ yrs★ 8.2

Tarek A. Omar, D.Sc. is a Mechanical and Structural Engineering expert specializing in accident reconstruction and forensic engineering. With a career encompassing mechanical design, structural analysis, and transportation safety, he brings a multidisciplinary approach to complex litigation matters. His work centers on investigating accident causation, assessing vehicle crashworthiness, and evaluating whether safety standards were met. Dr. Omar has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to mechanical engineering, transportation safety, and physical security. His Doctorate of Science in Mechanical Engineering from George Washington University, along with his extensive experience in Finite Element Analysis (FEA) and forensic engineering, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving vehicle dynamics, crashworthiness, and structural integrity.

Mechanical EngineeringMechanical DesignStructural Analysis+6

Architecture

MA

Marcus A. Marino

Expert Witness – Architecture & Construction Consulting

Davis, California45+ years+ yrs★ 8.2

Marcus A. Marino, AIA, NCARB is an architecture and construction consulting expert specializing in forensic analysis and litigation support. With a career spanning architectural design, zoning disputes, and construction defect analysis, he brings a comprehensive framework to evaluating architectural standard of care and duty to warn in complex cases. His work centers on investigating construction defects, assessing compliance with building codes, and evaluating whether professional practice standards were met. Mr. Marino has been retained in numerous expert witness and consulting engagements across the United States, involving architectural design, zoning and property disputes, construction defects, and professional liability. His Master in Science of Architecture and Urban Design from Columbia University, along with his Certificate Holder status with the National Council of Architectural Accreditation Boards, 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 architectural design and construction practices.

Construction DefectsArchitectural Standard of CareBuilding Codes & Compliance+3

Structural Analysis

RS

RAMESH S. SANT, Ph.D., P.E.

Structural Engineer

Roselle Park, NJ★ 8.2

RAMESH S. SANT, Ph.D., P.E. is a structural engineering expert specializing in civil engineering project management and forensic investigations. With a career encompassing structural analysis, building code compliance, and expert witness testimony, he brings a comprehensive framework to litigation work. His work centers on investigating structural failures, assessing engineering standard of care, and evaluating whether construction defects have occurred. Mr. Sant has been retained in numerous expert witness and consulting engagements across the Tri-States and Pennsylvania, involving commercial and residential buildings, high-rise towers, and industrial facilities. His Doctor of Philosophy in Structural Engineering from the State University of New York, along with his Professional Engineer licenses in CT, NJ, NY, PA, and VA, 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 structural integrity and engineering practices.

Civil Engineering Project ManagementForensic InvestigationsBuilding Code Compliance+3

Forensic Science

BP

Bethany Pridgen

Expert Witness, Laboratory Assessor, Independent Consultant

Wilmington, NC21 years+ yrs★ 8.2

Bethany Pridgen, Master of Forensic Sciences, Bachelor of Science in Chemistry is a forensic science and toxicology expert specializing in forensic alcohol analysis and driving impairment analysis. With a career encompassing laboratory quality management, forensic drug analysis, and toxicology, she brings a comprehensive forensic framework to her litigation work. Her work centers on investigating forensic alcohol and drug analysis, assessing laboratory quality management practices, and evaluating whether driving impairments are due to alcohol or drugs. Ms. Pridgen has been retained in numerous expert witness and consulting engagements across North Carolina, California, Florida, and other states, involving criminal and civil cases related to forensic toxicology and drug analysis. Her Master of Forensic Sciences, along with certifications such as Lean Six Sigma – Greenbelt Certification and Forensic Alcohol Analyst, reinforce her ability to deliver objective, defensible analyses. She is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving forensic alcohol and drug analysis.

ToxicologyForensic alcohol analysisAlcohol metabolism+5

Forensic Pathology

FJ

Francisco J. Diaz, MD, FCAP, FASCP

Pathologist

Scranton, Pennsylvania★ 8.2

Francisco J. Diaz, MD, FCAP, FASCP is a forensic pathology expert specializing in cause of death evaluations and medicolegal investigations. With extensive experience in forensic pathology, anatomic pathology, and medical examiner operations, he brings a comprehensive framework to his litigation work. His work centers on investigating cause and manner of death, assessing wound interpretation, and evaluating mechanisms of death. Dr. Diaz has been retained in numerous expert witness and consulting engagements across the United States, involving cases of overdose, elder abuse, and road traffic accidents. His MD in Medicine from Instituto Tecnologico de Santo Domingo, along with certifications in Anatomic Pathology and Forensic Pathology from the American Board of Pathology, 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 toxicology, suicide, and homicide.

Anatomic Pathology

Police practices

DR

Dr. Ron Martinelli

Forensic Criminologist, Police/Corrections Expert, Certified Medical Investigator

Boerne, TX★ 8.2

Dr. Ron Martinelli, Ph.D., MPA/JA, Certified Medical Investigator, CMI-V is a forensic criminologist expert specializing in police practices and corrections litigation. With a career encompassing forensic psychology, public and justice administration, and extensive field investigations, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating police practices, assessing corrections protocols, and evaluating whether security assessments meet industry standards. Dr. Martinelli has been retained in over 500 expert witness and consulting engagements across the United States, involving cases such as deadly/excessive force, jail suicides, and inadequate security. His Ph.D. in Criminology, with an emphasis in Forensic Psychology, along with certifications such as Certified Medical Investigator, CMI-V, and Certified Litigation Specialist - Police Practices & Corrections, 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 police practices and corrections.

CorrectionsSecurity assessmentIncident reconstruction+2

Appraisal & Valuation

BN

Brian Nolte

CPA, ABV

Los Angeles, CA16 years+ yrs★ 8.2

Brian Nolte, CPA, ABV is a forensic accounting and business valuation expert specializing in litigation support for accounting and financial disputes. With a career spanning forensic accounting, business valuation, and intellectual property valuation, he brings a nuanced perspective to litigation work involving complex financial analyses. His work centers on investigating financial discrepancies, assessing business valuations, and evaluating whether intellectual property valuations are accurate. Mr. Nolte has been retained in numerous expert witness and consulting engagements across California, involving cases related to intellectual property, business valuation, and financial disputes. His coursework involving the functional equivalent to an accounting degree from the University of California, Los Angeles, along with his certifications as a Certified Public Accountant (CPA) and Accredited in Business Valuation (ABV), reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving forensic accounting and valuation issues.

AccountingForensic AccountingBusiness Valuation+4

Engineering and Construction

DC

David C. Flettrich, P.E.

Professional Engineer

New Orleans, LA57 years+ yrs★ 8.1

David C. Flettrich, P.E. is a forensic engineering expert specializing in cause and origin investigations related to poorly performing or problematic building systems. With a career spanning the design and retrofit of mechanical, electrical, and control systems, he brings a multi-disciplined perspective to litigation work. His work centers on investigating design errors and omissions, assessing construction defects, and evaluating whether building systems meet industry standards. Mr. Flettrich has been retained in numerous expert witness and consulting engagements across the Southern United States, involving residential, commercial, industrial, and institutional facilities. His Bachelor of Science in Electrical Engineering from Tulane University, along with certifications as a Certified Indoor Environmentalist (CIE) and Certified Microbial Remediator (CMR), 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, moisture intrusion, and energy management.

Forensic engineeringExpert witnessLitigation support+6

Audio and Digital Forensics

MJ

Mark J. Scetta

Independent Forensic Audio Examiner

Providence, RI20+ years+ yrs★ 8.1

Mark J. Scetta is a forensic audio examiner specializing in scientifically defensible audio clarification and file authentication for criminal, civil, and investigative matters. With a career spanning professional audio engineering, audio post-production, and corporate media production, he brings a technical foundation to the evaluation of audio evidence. His work centers on clarifying contested audio, authenticating recordings, and evaluating whether audio evidence meets admissibility standards. Mr. Scetta has been retained in numerous expert witness and consulting engagements across multiple jurisdictions, involving personal injury, police use-of-force, and criminal defense cases. His B.A. in Film Studies (minor in Music), along with SEAK expert-witness training and FCC-licensed amateur radio operator 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 authenticity and integrity in disputes involving surveillance audio, dashcam recordings, and 911 call comparisons.

Forensic audio analysisAudio clarification/enhancementAuthentication

OSHA and Construction

HB

Hendrik Botterman

Corporate Safety Executive

Manhattan, IL45 years+ yrs★ 8.1

Hendrik Botterman, CSP is a construction safety and OSHA compliance expert specializing in liability assessment and contractor duty of care. With a career spanning leadership roles in safety management, policy development, and regulatory compliance, he brings a strategic perspective to litigation work. His work centers on investigating construction site incidents, assessing compliance with safety standards, and evaluating whether safety protocols were adequately implemented. Mr. Botterman has been retained in numerous expert witness and consulting engagements across the United States, involving construction safety, accident investigation, and OSHA compliance cases. His Bachelor of Science in Industrial Technology and Occupational Safety, along with his Certified Safety Professional (CSP) designation, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving construction safety and regulatory compliance.

Liability Assessment & Contractor Duty of CareAccident Investigation & Root CauseAerial Lifts, MEWP+29

Engineering

BH

Bonneau H. Dickson Jr., P.E.

Consulting Sanitary Engineer

Berkeley, CA40 years+ yrs★ 8.1

Bonneau H. Dickson Jr., P.E. is a Consulting Sanitary Engineer expert specializing in forensic engineering and expert witness testimony. With extensive experience in water and wastewater facility design, he brings a comprehensive understanding of environmental engineering challenges to litigation work. His work centers on investigating system failures, assessing compliance with engineering standards, and evaluating whether design omissions contributed to infrastructure issues. Mr. Dickson has been retained in numerous expert witness and consulting engagements across California, involving cases such as residential leakage, wastewater treatment failures, and sewer system analysis. His M.S. in Sanitary Engineering from Georgia Institute of Technology, along with his Civil Engineer certification in California (#19491), 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 water treatment systems, septic failures, and sewage contamination.

EnvironmentalWater and Wastewater Facility DesignForensic Engineering+3

Forensic evaluation of design and construction defects

MD

Michael D. Stall, MSCE, PE, DFE, CPAU

Expert Witness

Sugar Land, TX25 years+ yrs★ 8.1

Michael D. Stall, MSCE, PE, DFE, CPAU is a forensic engineering expert specializing in the evaluation of design and construction defects. With a career spanning forensic engineering, disaster recovery, and property insurance loss analysis, he brings a multidisciplinary perspective to litigation work. His work centers on investigating construction defects, assessing schedule delays and cost disputes, and evaluating whether property insurance claims align with industry standards. Mr. Stall has been retained in numerous expert witness and consulting engagements across the United States, involving construction defects, insurance disputes, and disaster recovery cases. His Master of Science in Civil Engineering from Stanford University, along with certifications such as Registered Professional Engineer (Texas #65893) and Senior Forensic Engineer (DFE), 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 construction and property loss.

Schedule delay and cost dispute resolutionLitigation support and expert witness testimonyDisaster recovery, repair, and reconstruction+1

Firearm

RK

Richard K. Pumerantz, Ph.D.

Ammo, Firearm, & Shooting Reconstruction Expert

Lake Arrowhead, California★ 8.1

Richard K. Pumerantz, Ph.D. is an Ammo, Firearm, & Shooting Reconstruction Expert specializing in ammunition identification and classification, firearm design and manufacturing, and shooting incident reconstruction. With a career encompassing ammunition design, ballistic trajectory analysis, and toolmark examination, he brings a multifaceted forensic perspective to litigation work. His work centers on investigating cartridge failure, assessing ballistic trajectories, and evaluating whether firearms meet safety and design standards. Mr. Pumerantz has been retained in numerous expert witness and consulting engagements both in the United States and internationally, involving civil and criminal matters related to firearms and ammunition. His Ph.D. in Higher Education, along with certifications such as Crime Scene Investigations and Glock Certified Law Enforcement Armorer, 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 firearm and ammunition failures.

AmmunitionBallisticGun+29

Premises Liability

KF

Kevin Fox Gotham, Ph.D., CPP

Professor of Sociology

New Orleans, LA28 years+ yrs★ 8.1

Kevin Fox Gotham, Ph.D., CPP is a forensic criminology and security management expert specializing in premises liability and security-related litigation. With a career spanning forensic criminology, political economy of real estate, and tourism gentrification, he brings a multidisciplinary analytical framework to litigation work. His work centers on investigating crime foreseeability, assessing standards of care, and evaluating proximate causation in security management disputes. Dr. Gotham has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to premises liability, negligent security, and workplace violence. His Ph.D. in Sociology, along with his Certified Protection Professional (CPP) designation, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving security management and forensic criminology.

SecurityForensic CriminologyPolitical Economy of Real Estate and Housing Policy+3

Technology and Telecommunications

SG

Scott Greene

Senior Digital Forensics Examiner

Tucson, AZ41 years+ yrs★ 8.1

Scott Greene is a digital forensics expert specializing in the acquisition, preservation, analysis, and presentation of digital evidence. With a career spanning technology and telecommunications, computer forensics, and internet security, he brings a comprehensive framework to litigation work involving digital evidence. His work centers on investigating digital fraud, assessing electronic logging devices, and evaluating whether data manipulation has occurred. Mr. Greene has been retained in numerous expert witness and consulting engagements across the United States, involving civil and criminal cases, insurance, corporate, and family law disputes. His Systems Engineering degree from the University of Arizona, along with his Arizona and Texas Private Investigator licenses, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving computer and mobile device forensics.

Computer ForensicsCell Phone & Mobile Device ForensicsComputer Security+3

Intellectual property

SA

Stephen A. Batzer, Ph.D., P.E.

President, Batzer Engineering, Inc.

Fife Lake, MI40 years+ yrs★ 8.1

Stephen A. Batzer, Ph.D., P.E. is a forensic engineering expert specializing in material failure analysis and accident reconstruction. With a career spanning mechanical engineering, materials science, and intellectual property, he brings a multidisciplinary perspective to litigation work. His work centers on investigating material failure mechanisms, assessing accident causation, and evaluating whether design standards were met. Mr. Batzer has been retained in numerous expert witness and consulting engagements across the United States, involving product liability, patent infringement, and vehicle crashworthiness cases. His Ph.D. in Mechanical Engineering - Engineering Mechanics, along with his Board Certified Forensic Engineer designation, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving mechanical failures and safety standards.

patent infringementforensic engineeringmaterial failure analysis+11

Forensic Pathology

OJ

Othon J. Mena, M.D.

Expert Witness

Thousand Oaks, CA20 years+ yrs★ 8.1

Othon J. Mena, M.D. is a forensic pathology expert specializing in the investigation of sudden, unexpected, unexplained, and unnatural deaths. With a career encompassing roles in medical examination, pediatric death review, and forensic education, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating causes of death, assessing contributing factors in pediatric fatalities, and evaluating whether forensic standards were met in death investigations. Dr. Mena has been retained in numerous expert witness and consulting engagements across California, involving cases of forensic pathology and forensic medicine. His M.D. in Medicine from UCLA School of Medicine, along with certifications in Forensic Pathology, Anatomic Pathology, and Clinical Pathology from the American Board of Pathology, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving forensic investigations.

Forensic Medicine

Risk assessment

DJ

Daniel J. Maple

Consulting Arborist

Chattaroy, WA35 years+ yrs★ 8.1

Daniel J. Maple, Registered Consulting Arborist, ISA Board Certified Master Arborist, ISA Municipal Specialist, ISA Tree Risk Assessment Qualified, Tree & Plant Appraisal Qualified is an arboriculture and urban forestry expert specializing in risk assessment, forensic investigation, and tree & plant appraisals. With a career encompassing hands-on experience in natural disaster response and urban forestry management, he brings a practical and scientifically grounded perspective to his litigation work. His work centers on investigating tree failures, assessing risk mitigation strategies, and evaluating compliance with industry standards. Mr. Maple has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to timber trespass, municipal tree inventories, and construction-related tree damage. His education from the ASCA Academy and WSU in Horticulture, along with certifications such as ISA Board Certified Master Arborist and Tree Risk Assessment Qualified, 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 arboricultural issues.

Forensic investigationTree & plant appraisalsTimber trespass+4

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