Expert Witness Directory

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

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Showing 775–792 of 1,756 experts

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Automotive

DM

Dennis Madden

Expert Witness

Henderson, NV45 years+ yrs★ 8.1

Dennis Madden, Six Sigma Black Belt, ASE Certified is an automotive transmission repair and diagnostics expert specializing in transmission shop practices and operations. With a career spanning leadership roles in technical development and association management, he brings a strategic perspective to litigation work involving automotive repair standards and practices. His work centers on investigating transmission failures, assessing repair methodologies, and evaluating whether industry standards were met in automotive service disputes. Mr. Madden has been retained in numerous expert witness and consulting engagements across North America, involving cases in the automotive repair and transmission industries. His Six Sigma Black Belt in Management, along with ASE certifications in Automatic and Standard transmissions, 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 transmission diagnostics and repair practices.

Business Operations

Pharmacology

JS

Joseph S. Bertino

Clinical Pharmacology/Toxicology Expert

Schenectady, New York30 years+ yrs★ 8.1

Joseph S. Bertino, Pharm.D is a Clinical Pharmacology/Toxicology expert specializing in drug interactions, side effects, and drug safety litigation. With a career spanning hospital, community, and nursing home practice settings, he brings a comprehensive clinical framework to evaluating pharmaceutical effects and potential deviations from standard care. His work centers on investigating medication errors, assessing drug labeling and safety, and evaluating whether overdosing or underdosing occurred. Mr. Bertino has been retained in numerous expert witness and consulting engagements across the United States, involving pharmaceutical company litigation and substance abuse disorders. His Pharm.D in Pharmacy, along with his Board Certification by the American Board of Clinical Pharmacology, 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 pharmacology and toxicology.

Pharmacology- ClinicalClinical pharmacologyToxicology+11

Education & Schools

BW

BRIAN WOLF

Educational Leader and Expert Witness

San Antonio, TX48 years+ yrs★ 8.1

Brian Wolf, M.Ed. is an educational leadership and crisis intervention expert specializing in K-12 school safety and behavioral management compliance. With a career spanning roles as superintendent, principal, and risk management consultant, he brings a comprehensive understanding of crisis intervention standards and regulatory compliance to his litigation work. His work centers on evaluating school district adherence to crisis intervention standards, assessing staff training adequacy, and investigating the appropriateness of physical restraint protocols. Mr. Wolf has been retained in numerous expert witness and consulting engagements across Oregon, involving cases related to crisis intervention practices, physical restraint protocols, and special education compliance. His Master of Education in Educational Leadership, along with his Initial and Continuing Administrative Licensure, 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 school district duty of care and student safety standards.

School SafetyCPI Nonviolent Crisis Intervention standards of care and best practicesPhysical restraint protocols and appropriate application+9

Equipment & Machinery

EC

Edward C. Guerra

Independent Crane Operations & Risk Expert

Wexford, PA35 years+ yrs★ 8.1

Edward C. Guerra is a Crane Operations & Risk Expert specializing in equipment and machinery litigation. With a career spanning crane operations, safety management, and lift planning, he brings a comprehensive understanding of industry standards and practices to his litigation work. His work centers on investigating crane accidents, assessing safety management protocols, and evaluating whether standard of care deviations have occurred. Mr. Guerra has been retained in numerous expert witness and consulting engagements across the United States, involving crane accidents, construction safety, and equipment failure cases. His EMT Advanced Certification from Broward College, along with NCCCO Crane Operator Certification, OSHA 30-Hour Construction Safety, and a Commercial Driver’s License (CDL), 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 crane operations and safety management.

ConstructionCrane operationsSafety management+2

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

Meteorology

RA

Richard A Shema, CCM

Expert Witness

Lakeville, PA> 30 years+ yrs★ 8.1

Richard A Shema, CCM is a meteorology and maritime expert specializing in weather reconstruction and forensic meteorology. With a career spanning over three decades in meteorology, maritime operations, and marine insurance, he brings a comprehensive understanding of how weather impacts maritime activities and legal disputes. His work centers on investigating weather-related incidents, assessing maritime conditions, and evaluating whether standard maritime practices were followed. Mr. Shema has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to ship and boating accidents, maritime insurance claims, and tropical meteorology. His MS from the U. S. Naval Postgraduate School, along with his Certified Consulting Meteorologist (CCM) designation by the American Meteorological Society, 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 marine meteorology and weather-related incidents.

Maritime

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

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

Emergency Medicine

MJ

Martin J Landa, MD

Auto Accident Expert Physician/Engineer

Miramar Beach, FL30 years+ yrs★ 8.1

Martin J Landa, MD is an Auto Accident Expert Physician/Engineer specializing in injury causation analysis in motor vehicle collisions. With a career that spans emergency medicine and engineering, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating injury mechanisms, assessing impairment ratings, and evaluating whether medical records align with expert medical opinions. Dr. Landa has been retained in numerous expert witness and consulting engagements across Florida, Georgia, and Alabama, involving motor vehicle collision cases and related injury assessments. His MD from the University of Utah School of Medicine, along with his Board Certification in Emergency Medicine, 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 biomechanics and mechanism-of-injury assessments.

Engineering

Structural Engineering

JO

Jose O Nunez, PE, FRSE, CXLT

Forensic Structural Engineer – Roof & Water Loss

Hollywood, FL20 years+ yrs★ 8.1

Jose O Nunez, PE, FRSE, CXLT is a forensic structural engineering expert specializing in roof and water loss litigation. With a career spanning structural engineering, construction engineering, and forensic analysis, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating hurricane damage, assessing construction defects, and evaluating whether water intrusion has compromised structural integrity. Mr. Nunez has been retained in numerous expert witness and consulting engagements across Florida, Colorado, Louisiana, Alabama, New York, and North Carolina, involving construction disputes, premises liability, and building envelope cases. His Bachelor of Science in Civil Engineering from Instituto Tecnologico De Santo Domingo, along with Professional Engineer (PE) licenses in multiple states, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving structural failures and water damage.

Construction Engineering

Software Engineering

MM

Matthew Morrissette Vance

Certified Cloud Architect and Engineer

Las Vegas, NV★ 8.1

Matthew Morrissette Vance, Certified Cloud Architect and Engineer is a software engineering and technology expert specializing in cloud architecture and enterprise software development. With a career spanning cloud solutions, software architecture, and regulatory compliance, he brings a strategic and innovative framework to his litigation work. His work centers on investigating software architecture integrity, assessing compliance with industry standards, and evaluating whether technology implementations meet regulatory requirements. Mr. Vance has been retained in numerous expert witness and consulting engagements across the United States, involving technology development, cloud solutions, and gaming industries. His Bachelor of Science in Electrical Engineering and Computer Science, along with his Bachelor of Science in Management Science with a Concentration in Marketing, 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 software engineering and technology implementations.

Technology

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

Building Inspection

RM

Randal M. Thompson

Public Insurance Adjuster, Registered Appraiser, Property Damage Consultant

Covington, LA18 years+ yrs★ 8.1

Randal M. Thompson, MBA is a property damage and insurance claims expert specializing in damage causation, claims adjusting, and property damage appraisals. With a career encompassing public insurance adjusting, damage consulting, and appraisal services, he brings a multifaceted perspective to litigation work. His work centers on investigating damage causation, assessing claims validity, and evaluating whether insurance policies have been appropriately applied. Mr. Thompson has been retained in numerous expert witness and consulting engagements across both state and federal courts, involving property damage claims, insurance disputes, and liability assessments. His Master of Business Administration, along with certifications such as Legal Principles Claim Specialist and IICRC Certified Technician, 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 property damage and insurance claims.

InsuranceClaims Handling & InvestigationsNegotiation Competence+10

Employment

AK

Andrea Kelly Smethurst

Attorney Investigator

Walnut Creek, CA28 years+ yrs★ 8.1

Andrea Kelly Smethurst is an employment and investigation expert specializing in workplace investigations, independent investigations, and school investigations. With a career spanning nearly three decades, she brings a nuanced understanding of employment policies, practices, and legal frameworks to her litigation work. Her work centers on investigating allegations of sexual harassment, assessing claims of discrimination and retaliation, and evaluating whether bullying and EEO violations have occurred. Ms. Smethurst has been retained in numerous expert witness and consulting engagements across California, involving cases of sexual harassment, discrimination, and employment policy disputes. Her JD from the University of California, Berkeley School of Law, along with her Association of Workplace Investigator's Certificate and Certificate from AtIXa to conduct Title IX investigations, reinforce her ability to deliver objective, defensible analyses. She is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving human resources and employment law.

Investigation

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

Allergy & Immunology

JM

Jeffrey M. Davidson

MD, FAAAAI

San Francisco, CA42 years+ yrs★ 8.1

Jeffrey M. Davidson, MD, FAAAAI is an Allergy & Immunology expert specializing in mold, drug allergy, and anaphylactic shock litigation. With a career spanning allergy treatment, internal medicine, and immunodeficiency management, he brings a comprehensive clinical perspective to his litigation work. His work centers on investigating causation in allergic reactions, assessing the standard of care in immunotherapy, and evaluating whether product liability issues contributed to adverse outcomes. Dr. Davidson has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to product liability, vaccine allergy, and fatal asthma. His M.D., C.M. in Medicine from McGill University, along with his certifications from the American Board of Allergy & Immunology and the American Board of Internal Medicine, 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 allergy and immunology.

Internal Medicine

Weed control in ornamental crops

HM

Hannah Mary Mathers

Independent Researcher

Gahanna, OH23 years+ yrs★ 8.1

Hannah Mary Mathers, PhD is a weed control in ornamental crops expert specializing in plant stress physiology and diagnoses of plant disorders. With a career encompassing extensive research and outreach in the nursery and landscape industries across North America, she brings a comprehensive understanding of plant physiology and biochemistry to her litigation work. Her work centers on investigating herbicide efficacy, assessing plant stress responses, and evaluating whether industry standards in weed management have been met. Dr. Mathers has been retained in numerous expert witness and consulting engagements across the United States and Canada, involving cases related to agricultural chemicals, environmental impacts, and nursery crop production. Her Doctor of Philosophy in Cold Stress Physiology from Michigan State University, along with her Master of Science in Horticulture - Stress Resistance Physiology and Bachelor of Science in Plant Science, 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 weed control practices and plant health.

Plant stress physiologyDiagnoses of plant disorders

school

JH

Julie Hall, Ph.D.

Founder & President

Buffalo, New York20+ years+ yrs★ 8.1

Julie Hall, Ph.D. is an educational leadership expert specializing in the prevention of educator sexual misconduct and Title IX compliance. With a career spanning educational program development, statutory compliance, and leadership in higher education, she brings a comprehensive framework to litigation work involving school liability and student safety. Her work centers on investigating statutory compliance, assessing institutional policies, and evaluating whether educational entities meet their duty of care. Ms. Hall has been retained in numerous expert witness and consulting engagements nationwide, involving public and private schools, faith-based organizations, and youth-serving entities. Her Ph.D. in Educational Culture, Policy & Society, along with her extensive experience in Title IX and mandatory reporting, reinforce her ability to deliver objective, defensible analyses. She is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of standard of care in disputes involving educator misconduct and student safety.

sexual harassmentsexual abusechild+19

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