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Expert Witness Directory

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

Showing 307–324 of 3,373 experts

Liability Assessment & Contractor Duty of Care

Michael P. Lawler, MS, CSP, ASP, CHST

Construction Safety Expert

Orland Park, IL30+ years+ yrs★ 8.9

Michael P. Lawler, MS, CSP, ASP, CHST is a construction safety expert specializing in liability assessment and contractor duty of care. With a career encompassing safety management, OSHA compliance, and incident investigation, he brings a comprehensive understanding of safety protocols and regulatory frameworks to his litigation work. His work centers on investigating accident causation, assessing contractor safety responsibilities, and evaluating compliance with OSHA standards. Mr. Lawler has been retained in numerous expert witness and consulting engagements across the United States, involving heavy civil construction, industrial operations, and transportation safety. His MS in Safety, Health, Environmental Management, along with certifications such as CSP, ASP, and CHST, 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 OSHA compliance.

Accident Investigation & Root CauseAerial Lifts, MEWPCrane Safety, Inspection, Critical Pick Planning, & Rigging+53
Insurance Law

Rick Hammond

J.D., CLU

Orland Park, Illinois48 years+ yrs★ 8.9

Rick Hammond, J.D., CLU is an insurance law expert specializing in claims handling, bad faith, and insurance coverage litigation. With a career spanning insurance law, regulatory compliance, and claims management, he brings a comprehensive legal framework to his litigation work. His work centers on investigating insurance coverage disputes, assessing claims handling practices, and evaluating whether industry standards have been met. Mr. Hammond has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to insurance coverage, bad faith, and agent-broker liability. His Juris Doctorate in Law from the University of Illinois Chicago Law School, along with his Chartered Life Underwriter (CLU) designation and Certified Mediator 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 responsibility in disputes involving insurance law and claims handling.

Claims HandlingBad FaithInsurance Coverage
Toxicology

Edward U. Maduh, Ph.D.

Board licensed Clinical pharmacist & toxicologist

Washington, DC20+ years+ yrs★ 8.9

Philip J. Cross, Ph.D. is an economics and statistics expert specializing in litigation consulting. With a career encompassing academia, government, and consulting, he brings a multifaceted analytical framework to his litigation work. His work centers on investigating economic damages, assessing antitrust claims, and evaluating statistical methodologies. Dr. Cross has been retained in numerous expert witness and consulting engagements across the United States, involving antitrust, class action, and breach of contract cases. His Ph.D. in Economics from the University of Wisconsin, along with his extensive experience in statistical 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 complex economic and statistical issues.

Pharmaceutical ResearchPharmacologyClinical Pharmacy+3
California Title 24 Part 6 (Energy Code)

Philip D. Dregger, PE, RRC, Fellow IIBEC

Professional Engineer, Registered Roof Consultant

Concord, CA★ 8.9

Philip D. Dregger, PE, RRC, Fellow IIBEC is a roofing and waterproofing consulting expert specializing in litigation involving roofing failures, waterproofing defects, and condensation issues. With a career encompassing engineering, consulting, and expert testimony, he brings a multifaceted approach to analyzing complex building enclosure disputes. His work centers on investigating roofing and waterproofing failures, assessing compliance with California Title 24 Part 6 (Energy Code), and evaluating the impact of wind and hurricane damage. Mr. Dregger has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to roofing and waterproofing failures, wind damage, and energy code compliance. His Master of Science in Civil Engineering from the University of Minnesota, along with his credentials as a Professional Engineer and Registered Roof Consultant, 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 roofing systems and building enclosures.

Roof drainageWind/hurricane damagePatent litigation+7
OSHA compliance and construction safety issues

Joseph Green

OSHA Safety Expert Witness and Consultant

Fort Myers, Florida25+ years+ yrs★ 8.9

Joseph Green, CHST is an OSHA safety expert specializing in construction safety and regulatory compliance litigation. With a career encompassing roles such as OSHA Compliance Assistance Specialist and Assistant Area Director, he brings a nuanced understanding of regulatory enforcement and accident investigation to his litigation work. His work centers on investigating construction site accidents, assessing OSHA compliance, and evaluating whether safety management systems meet industry standards. Mr. Green has been retained in numerous expert witness and consulting engagements across the United States, involving construction safety and OSHA compliance cases. His Technical Diploma in Welding & Metal Fabrication, along with certifications such as Certified Health and Safety Technician (CHST), 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 safety standards in disputes involving construction site safety and OSHA regulations.

OSHA Compliance & Enforcement — Construction (29 CFR 1926)OSHA Field Operations Manual (FOM)Construction Safety — Residential & Commercial+11
Construction Defects

Mark S. Densmore

Board-Certified Forensic Engineer

Lakewood Ranch, FL30 years+ yrs★ 8.8

Mark S. Densmore, P.E., S.I., DFE, FRSE, MLE is a forensic structural engineering expert specializing in forensic property damage investigations and evaluations. With a career spanning structural design, forensic investigations, and expert witness testimony, he brings a comprehensive forensic framework to litigation work. His work centers on investigating construction defects, assessing structural damage, and evaluating whether building code violations have occurred. Mr. Densmore has been retained in numerous expert witness and consulting engagements across Florida, involving cases related to construction defects, hurricane damage, and roofing system failures. His Bachelor of Science in Civil Engineering from Worcester Polytechnic Institute, along with certifications such as Board-Certified Diplomate in Forensic Engineering and Florida-Recognized Structural Engineer, 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 property damage.

Structural EngineeringForensic property damage investigationsStructural design and analysis
Transportation

Richard W. Carr

Principal

Jacksonville, FL12 years+ yrs★ 8.8

Richard W. Carr, PhD is a transportation and safety consulting expert specializing in risk management and motor carrier safety management. With a career encompassing diverse roles in safety engineering, corporate safety culture, and compliance management, he brings a comprehensive framework to litigation work involving transportation safety and risk assessment. His work centers on investigating accident preventability, assessing compliance with safety standards, and evaluating whether corporate safety protocols have been effectively implemented. Mr. Carr has been retained in numerous expert witness and consulting engagements across the United States, involving motor carrier claims administration, litigation case management, and corporate safety audits. His PhD from Penn State University, along with certifications in Accident Reconstruction and as a CDL Driver with 8 endorsements, 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 risk management.

TruckingRisk ManagementSafety Consulting
Medical Devices

Karl R. Leinsing

MSME, PE

Dover, NH35 years+ yrs★ 8.8

Karl R. Leinsing, MSME, PE is a medical device engineering expert specializing in full life cycle medical device product development and consulting. With a career encompassing mechanical engineering, regulatory compliance, and innovative design, he brings a comprehensive framework to litigation work involving complex product development and patent disputes. His work centers on investigating patent infringement, assessing product liability, and evaluating whether industry standards were met in medical device development. Mr. Leinsing has been retained in numerous expert witness and consulting engagements across the United States, Canada, EPO, USPTO, ITC, and Australia, involving patent and liability cases in the medical device industry. His M.S. in Mechanical Engineering from North Carolina A&T State University, along with his Professional Engineer license in NH, 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 medical device design and functionality.

Mechanical EngineeringMedical device product development
Electric Expert

Chris Larson

Certified Fire and Explosion Investigator (CFEI)

San Diego, California36 years+ yrs★ 8.8

Chris Larson, CFEI is a high-voltage electric utility expert specializing in fire and accident investigation. With a career spanning roles from Journeyman Lineman to Director of Safety and Training, he brings a comprehensive understanding of fieldwork, workforce management, and legal complexities in electric utilities to his litigation work. His work centers on investigating electrical incidents, assessing OSHA compliance, and evaluating whether industry standards were met in utility-related accidents. Mr. Larson has been retained in numerous expert witness and consulting engagements across the United States, involving high-voltage electrical safety, utility construction, and incident reconstruction. His Journeyman Lineman Certification in Electrical, along with his Certified Fire and Explosion Investigator (CFEI) 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 electrical contact, shock, electrocution, and utility-related fires.

OSHAConstructionElectrical Contact+23
Aviation & Aerospace

Keith M. Cianfrani

Aviation Accident Investigator

The Villages, Florida45 years+ yrs★ 8.8

Keith M. Cianfrani, Ed.D, (abd), MAS, CISM is an aviation accident investigation expert specializing in accident investigations and FAA enforcement proceedings. With a career spanning military aviation safety, commercial piloting, and safety consulting, he brings a multifaceted perspective to litigation work. His work centers on investigating aviation accidents, assessing risk management practices, and evaluating whether safety management systems were properly implemented. Mr. Cianfrani has been retained in numerous expert witness and consulting engagements across the United States, involving aviation accident investigations and safety audits for Part 135 and Part 91 operators, among others. His MAS in Aviation Safety from Embry Riddle Aeronautical University, along with his Certified Flight Instructor (CFI) 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 aviation safety and human factors.

Accident ReconstructionAviation Accident InvestigationRisk Management+4
Security and Law Enf & Criminal Justice

James (Jim) McMahon

Crisis Leader / Exec Management / Security-Safety / Expert Witness

Eagle, Idaho33 years+ yrs★ 8.8

James McMahon, CISSP, CPP, NACD Leadership Fellow is a security and risk management expert specializing in intellectual property protection and regulatory compliance. With a career spanning law enforcement, information security, and international business, he brings a multifaceted perspective to litigation work. His work centers on investigating compliance breaches, assessing security protocols, and evaluating whether industry standards have been met. Mr. McMahon has been retained in numerous expert witness and consulting engagements across the United States, involving cases in the technology, healthcare, and law enforcement sectors. His Juris Doctor in Law, along with certifications such as Certified Protection Professional (CPP) and Certified Information Systems Security Professional (CISSP), 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 information security and risk management.

Intellectual Property ProtectionLaw EnforcementInformation Security+9
Structural Engineering

Brian Huang

President, Structural Forensic Engineer

Houston, TXOver 25 years+ yrs★ 8.8

Brian Huang, PE, SE, LEED AP is a structural forensic engineering expert specializing in building collapse cause and origin, construction defects, and premises liability. With a career encompassing structural design, forensic analysis, and building envelope evaluation, he brings a multidisciplinary perspective to litigation work. His work centers on investigating structural failures, assessing construction defects, and evaluating compliance with building codes. Mr. Huang has been retained in numerous expert witness and consulting engagements across the United States, involving cases such as structural collapses, wind and hail damage, and foundation failures. His MS in Structural Engineering from Tsinghua University, China, along with certifications including LEED™ 2.0 Accredited Professional, 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 engineering and building code compliance.

Construction DefectsForensic Structural EngineeringBuilding Collapse Cause & Origin+11
Security

Elizabeth Dumbaugh

Security Consultant

Sarasota, FL20 years+ yrs★ 8.8

Elizabeth Dumbaugh, MS, CPP is a security and premises liability expert specializing in risk management and security management. With a career encompassing military leadership and consulting roles, she brings a strategic and operational perspective to her litigation work. Her work centers on investigating crime foreseeability, assessing reasonable care, and evaluating whether security measures meet industry standards. Ms. Dumbaugh has been retained in numerous expert witness and consulting engagements across the United States, involving commercial properties such as hotels, retail spaces, and entertainment venues. Her M.S. in Criminal Justice from Florida State University, along with her Certified Protection Professional and Crime Prevention Professional certifications, 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 inadequate or negligent security.

Premises LiabilityRisk ManagementSecurity Management+2
Food and Public Health

Catherine Adams Hutt

PhD, RD, CFS

Bonnerdale, AR★ 8.8

Catherine Adams Hutt, PhD, RD, CFS is a food safety and regulatory compliance expert specializing in litigation involving foodborne illness and regulatory matters. With a career spanning nutrition, food safety, and quality systems management, she brings a multidisciplinary approach to her litigation work. Her work centers on investigating food safety breaches, assessing regulatory compliance, and evaluating whether industry standards have been met. Ms. Adams Hutt has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to food manufacturing, food fraud, and dietary supplements. Her PhD in Food Science, along with her Registered Dietitian and Certified Food Scientist certifications, 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 food safety and regulatory compliance.

NutritionFood SafetyRegulatory Compliance
Failure Analysis

Dr. Robert A Durham

Principal Scientist

Tulsa, OK36 years+ yrs★ 8.8

Dr. Robert A Durham, PhD, FIEEE is an electrical engineering and energy systems expert specializing in failure analysis and forensic engineering. With a career spanning roles in power generation, transmission planning, and engineering management, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating electrical failures, assessing energy system safety, and evaluating whether industry standards were met in complex engineering disputes. Dr. Durham has been retained in numerous expert witness and consulting engagements across the United States, involving cases in the petroleum and chemical industries, as well as electrical and mechanical energy conversion systems. His PhD in Engineering Management, along with his status as a Fellow of the Institute of Electrical and Electronic Engineers, 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 electrical power systems and safety.

EngineeringLightning & groundingFailure analysis & forensic engineering+4
Audiology

Dennis A. Colucci

Audiologist

Dana Point, CA★ 8.8

Dennis A. Colucci, M.A., Au.D., ABAC, FAAA is a forensic audiology expert specializing in noise-induced hearing loss and auditory disorders. With a career encompassing clinical, industrial, and rehabilitative audiology, he brings a multifaceted perspective to litigation involving auditory injuries and compliance with industry standards. His work centers on investigating noise exposure impacts, assessing auditory processing disorders, and evaluating whether hearing conservation measures meet regulatory requirements. Mr. Colucci has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to industrial noise exposure, veterans' auditory disabilities, and workplace safety compliance. His Doctor of Audiology in Audiology, along with certifications such as Board Certified in Audiology by the American Board of Audiology, 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 auditory injuries and compliance with OSHA regulations.

NoiseForensic AudiologyHearing and Balance Disorders
Education & Schools

JOHN F. DOHERTY, Ed.D

Education standard of care, school liability, child/youth-serving agency consultant and expert witness.

Lambertville, NJ46 years+ yrs★ 8.8

JOHN F. DOHERTY, Ed.D is an education standard of care and school liability expert specializing in child and youth-serving agency consulting and expert witness services. With a career spanning roles as a school superintendent, principal, and human resources administrator, he brings a comprehensive framework to litigation work involving school safety and liability issues. His work centers on investigating school safety protocols, assessing compliance with educational standards, and evaluating whether negligent supervision occurred. Mr. Doherty has been retained in numerous expert witness and consulting engagements across Massachusetts and New Hampshire, involving cases related to school liability, special education, and student safety. His Doctorate in Education Leadership from Seton Hall University, along with certifications as a Superintendent and Principal in Massachusetts and New Hampshire, 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 education law, negligent supervision, and school administration.

School SafetyEducation standard of careSchool liability+8
Insurance

Scott S. Margraves

CIC

Houston, Texas33 years+ yrs★ 8.8

Scott S. Margraves, CIC is an insurance industry expert specializing in property and casualty insurance interpretation and litigation. With a career encompassing diverse roles in insurance brokerage, claims supervision, and risk management, he brings a multifaceted perspective to his litigation work. His work centers on investigating policy compliance, assessing contractual obligations, and evaluating whether industry standards have been met. Mr. Margraves has been retained in numerous expert witness and consulting engagements across Arkansas, Colorado, Illinois, Louisiana, New Mexico, and Texas, involving cases of Bad Faith, Agency E&O, and Marine insurance, among others. His Bachelor of Science in Economics, along with his Certified Insurance Counselors (CIC) 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 standard of care in disputes involving complex insurance matters.

Real EstateBad FaithAgency E&O+6
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