Witnessly
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.

Showing 559576 of 1,760 experts

Slip Trip & Fall

William (Will) Stoner

Certified Flooring Inspector & Instructor

Toney, AL45 years+ yrs8.4

William (Will) Stoner, Certified Flooring Inspector & Instructor is a flooring inspection and forensic analysis expert specializing in slip, trip, and fall cases, as well as construction defects. With a career encompassing roles in installation, retail, and inspection, he brings a multifaceted perspective to litigation work, informed by his extensive experience in forensic flooring analysis and industry standards compliance. His work centers on investigating installation failures, assessing product defects, and evaluating whether maintenance protocols meet safety standards. Mr. Stoner has been retained in numerous expert witness and consulting engagements across the United States, involving residential and commercial flooring disputes, manufacturing defects, and safety compliance issues. His Bachelor's Degree in Marketing, along with certifications such as NFSI Walkway Auditor Safety Specialist and NWFA-CP Certified Wood Flooring 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 failures and safety evaluations.

Construction DefectsForensic flooring analysisResidential & commercial inspections+7
Construction

Thomas Collier, Jr

Highly Experienced Expert, Summa Cum Laude

Atlanta, Georgia30+ years+ yrs8.4

Thomas Collier, Jr is a construction and premises liability expert specializing in large commercial and multi-residential construction disputes and serious bodily injury claims. With a career spanning general contracting, development, and consulting, he brings a comprehensive understanding of construction practices and liability issues to his litigation work. His work centers on investigating construction defects, assessing premises liability, and evaluating whether industry standards were met. Mr. Collier has been retained in numerous expert witness and consulting engagements across the Southeastern United States, involving commercial defects, personal injury claims, and multifamily construction cases. His BA in Economics and English from the University of North Carolina at Chapel Hill, along with his Licensed Contractor certification in Georgia, 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 construction defects and premises liability.

Premises Liability
Slips trips & falls

Mark Clinton

Loss Control, Risk Management & Safety Consultant

North Little Rock, AR34 years+ yrs8.4

Mark Clinton, MBA, ARM is a Loss Control and Risk Management expert specializing in premises liability and amusement safety. With a career encompassing diverse sectors such as construction, insurance, and safety consulting, he brings a multifaceted perspective to litigation work. His work centers on investigating premises liability incidents, assessing compliance with safety standards, and evaluating whether risk management protocols were followed. Mr. Clinton has been retained in numerous expert witness and consulting engagements nationwide, involving cases related to amusement parks, construction safety, and insurance loss control. His Masters of Business Administration in Finance and Insurance, along with certifications such as OSHA 500 and OSHA 501 Outreach Trainer, 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 safety compliance and risk management practices.

Fairs & theme parksRoofingElectrical+18
Accident Reconstruction

Larry W. Busby

Owner & Manager

Austin, TexasOver 28 years+ yrs8.4

Larry W. Busby is an accident reconstruction and land surveying expert specializing in accident investigation and reconstruction. With a career spanning private investigation, land surveying, and accident reconstruction, he brings a multidisciplinary perspective to litigation work. His work centers on investigating accident causation, assessing scene mapping accuracy, and evaluating whether industry standards were met. Mr. Busby has been retained in numerous expert witness and consulting engagements across Texas, New Mexico, Colorado, and Oklahoma, involving automotive, pedestrian, commercial vehicle, and land surveying cases. His Bachelor’s Degree in Criminal Justice, along with certifications such as the Accreditation Commission for Accident Reconstruction (ACTAR) and Certified Federal Surveyor (CFedS), 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 accident reconstruction and land surveying.

Accident InvestigationLand Surveying
Architecture

Gary K. Dempster

FAIA, NCARB, LEED AP, CRRP

South Pasadena, CA42 years+ yrs8.4

Gary K. Dempster, FAIA, NCARB, LEED AP, CRRP is an architecture and construction expert specializing in professional standard of care and construction documents analysis. With a career spanning project management, technical services, and architectural mediation, he brings a comprehensive framework for evaluating compliance with industry standards in complex construction disputes. His work centers on investigating professional standard of care breaches, assessing construction document integrity, and evaluating whether architectural coordination meets regulatory requirements. Mr. Dempster has been retained in numerous expert witness and consulting engagements across the United States, involving retail, hospitality, and historic preservation projects. His Bachelor of Science in Architecture from the University of Southern California, along with certifications such as NCARB, LEED AP, and CRRP, 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 administration.

ConstructionProfessional Standard of CareConstruction Documents Analysis+8
Security and Premises Liability

Joshua Shelton

Certified Physical Security and Threat Assessment Expert

Atlanta, Georgia20+ years+ yrs8.4

Joshua Shelton, Certified Protection Professional, Certified Threat Manager is a certified physical security and threat assessment expert specializing in security and premises liability litigation. With a career encompassing law enforcement and corporate security, he brings a multifaceted perspective to his litigation work. His work centers on conducting vulnerability assessments, facilitating behavioral threat assessment training, and evaluating the adequacy of security measures in various environments. Mr. Shelton has been retained in numerous expert witness and consulting engagements across Georgia and Federal courts, involving cases of inadequate security, workplace violence, and premises liability in industries such as gas stations, apartments, and parking garages. His Master of Science in Criminal Justice from the University of the Cumberlands, along with certifications as a Certified Protection Professional and Certified Threat Manager, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving security management and threat assessment.

Security ManagementThreat Assessment
Architecture

Fred Lott

Expert Witness Architect

Westport, CT44 years+ yrs8.4

Fred Lott, AIA, ARA, CSI is an Expert Witness Architect specializing in construction defects, standard of care, and responsibility & compliance litigation. With a career spanning architecture, construction management, and owner representation, he brings a multidisciplinary approach to his litigation work. His work centers on investigating construction defects, assessing compliance with industry standards, and evaluating whether contractual obligations have been met. Mr. Lott has been retained in numerous expert witness and consulting engagements across the United States, involving complex construction and architectural disputes. His Bachelor of Architecture from Ball State University, along with certifications such as Multi-Protection Design from the Department of Defense and ICBO 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 responsibility in disputes involving construction defects and compliance with architectural standards.

Construction DefectsStandard of CareResponsibility & Compliance+27
Premises Liability

Charles T. Ahmad

Founding Partner

Mableton, GA8.4

Charles T. Ahmad, CPP is a security risk management expert specializing in premises liability for negligent security. With a career spanning security management, behavioral threat assessment, and tactical operations, he brings a strategic perspective to litigation work. His work centers on investigating security negligence, assessing threat management protocols, and evaluating whether security measures meet industry standards. Mr. Ahmad has been retained in numerous expert witness and consulting engagements across the United States, involving apartment complex violent crime, gas station and convenience store violent crime, and security negligence cases. His Bachelor of Science in Criminal Justice Sciences, along with certifications such as Certified Protection Professional/Board Certified in Security Management and Force Science 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 security risk management and use of force.

SecuritySecurity Risk ManagementThreat Assessment+4
Real Estate

Camille Ford

Mortgage Expert Witness

Atlanta, Georgia34 years+ yrs8.4

Camille Ford, NMLS license#1148009, Georgia license #40988 is a Mortgage Expert Witness specializing in mortgage and real estate litigation. With a career spanning origination, operations, compliance, and training, she brings a comprehensive framework to her litigation work. Her work centers on investigating mortgage fraud, assessing broker fiduciary duties, and evaluating compliance with lending regulations. Ms. Ford has been retained in numerous expert witness and consulting engagements across the Southeast, involving wholesale mortgage broker wire fraud and commercial real estate breach of contract cases. Her Associate Degree in Business, along with her NMLS and Georgia licenses, 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 mortgage lending and compliance.

BankingMortgage lendingCompliance+3
Life Care Planning

Tyla A. DiMaria

RN, MSN, CCM, CNLCP

Carlsbad, California29 years+ yrs8.4

Tyla A. DiMaria, RN, MSN, CCM, CNLCP is a Life Care Planning expert specializing in catastrophic injury and chronic illness litigation. With a career encompassing nursing administration, case management, and home care agency leadership, she brings a comprehensive framework to her litigation work. Her work centers on investigating medical records, assessing future care needs, and evaluating whether standards of care have been met. Ms. DiMaria has been retained in numerous expert witness and consulting engagements across California, involving cases of catastrophic injury, long-term care, and medical bill review. Her Masters of Science in Nursing, along with certifications as a Certified Nurse Life Care Planner and Certified Nurse Case Manager, 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 life care planning and catastrophic injuries.

Nurse
Marketing

Gregory J. Kohs

Market Research Executive

Jensen Beach, FL32 years+ yrs8.4

Gregory J. Kohs is a market research expert specializing in consumer surveys and litigation involving market research methodologies. With a career spanning both vendor-side and client-side roles, he brings a multifaceted perspective to litigation work involving brand equity, customer satisfaction, and strategic product planning. His work centers on investigating survey validity, assessing data collection methodologies, and evaluating whether research practices meet industry standards. Mr. Kohs has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to consumer surveys and market research practices. His MA in History, along with his ABD toward a PhD in History with a minor in Geography (quantitative methods), reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of survey validity and data integrity in disputes involving market research and consumer behavior.

Statistics
Fingerprints

Frank R. Vanecek

Police Practices Expert

Oak Harbor, WA35 years+ yrs8.4

Frank R. Vanecek, Police Practices Expert is a police practices expert specializing in wrongful conviction and use of force litigation. With a career spanning law enforcement at city, county, state, tribal, and federal levels, he brings a multifaceted perspective to his litigation work. His work centers on investigating police conduct, assessing compliance with law enforcement standards, and evaluating whether procedural violations occurred. Mr. Vanecek has been retained in numerous expert witness and consulting engagements nationwide, involving cases of false conviction, wrongful detention, and excessive force. His Bachelor of Arts in Management with a Criminal Justice Minor, along with certifications as a California and Colorado certified Peace Officer (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 police practices and procedures.

HomicideGangsNarcotics+19
Epidemiology

Lawrence S. Mayer

MD, MS, PhD

Laguna Beach, CA50 years+ yrs8.4

Lawrence S. Mayer, MD, MS, PhD is an epidemiology and biostatistics expert specializing in the application of statistical methods in public health and clinical medicine. With a career spanning biostatistics, epidemiology, and public health policy, he brings a multidisciplinary perspective to litigation work. His work centers on investigating the health effects of preventive interventions, assessing statistical issues in evidence-based medicine, and evaluating the application of epidemiological models in clinical settings. Dr. Mayer has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to clinical trials, product liability, and environmental epidemiology. His PhD in Mathematics (Statistics and Biostatistics), along with his MB Certificate (British MD) and MS in Mathematics, 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 epidemiological studies and statistical evaluations.

BiostatisticsClinical TrialsModel Validation & Evaluation+22
Transportation

Nelson Lackings

Transportation Consultant

Dayton, Ohio30+ years+ yrs8.4

Nelson Lackings is a transportation safety and compliance expert specializing in accident investigation and DOT regulations. With a career spanning transportation leadership, instructional design, and strategic planning, he brings a multifaceted perspective to litigation work. His work centers on investigating accident causation, assessing compliance with transportation regulations, and evaluating whether safety protocols were followed. Mr. Lackings has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to commercial vehicle safety, driver accountability, and regulatory compliance. His degree in Criminal Justice, along with certifications such as the Smith System Trainer Certification and NATMI Accident Investigation, 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 compliance.

SafetyTransportation LeadershipManagement and Leadership+8
Environmental Engineering

Mr. Harold (Ed) E. von Dran Jr.

Registered Professional Engineer

San Antonio, TX45 years+ yrs8.4

Harold E. von Dran Jr., PE is an Environmental Engineering expert specializing in environmental litigation and regulatory compliance. With a career spanning environmental program management, construction defect analysis, and regulatory negotiations, he brings a strategic framework to litigation work. His work centers on investigating environmental contamination, assessing regulatory compliance, and evaluating infrastructure design failures. Mr. von Dran has been retained in numerous expert witness and consulting engagements across Texas, Arkansas, Louisiana, and beyond, involving environmental contamination cases, construction defects, and regulatory compliance disputes. His MS in Environmental Science, along with his Certified Energy Manager 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 environmental impact assessments and facility design compliance.

Construction DefectsEnvironmental Program/Project ManagementRegulatory Compliance & Government Relations+6
Accident Reconstruction

David Yarr

Forensic Animator/Technical Animator/Legal Graphic Designer/Medical Illustrator

Tustin, CA17 years+ yrs8.4

David Yarr is a forensic animation and visualization expert specializing in accident reconstruction and legal graphics. With a career spanning forensic animations, accident reconstruction visualization, and medical illustrations, he brings a multidisciplinary approach to litigation work. His work centers on producing demonstrative evidence, conducting video analysis, and integrating EDR/black box data. Mr. Yarr has been retained in numerous expert witness and consulting engagements across the United States, involving personal injury cases, vehicle collisions, and medical device litigations. His coursework in Digital Animation, along with certifications such as LEVA Level 1, Forensic Video Analysis & the Law, 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 accident scenarios and forensic visualizations.

VideoForensic Animations
Apartment

Charles McGilvary Johnson

Founder & Chief Executive Officer

Jasper, GA30 years+ yrs8.4

Charles McGilvary Johnson is a security management and premises liability expert specializing in negligent security and premises liability litigation. With a career encompassing security assessments, physical security, and access control systems, he brings a comprehensive understanding of security protocols and risk mitigation strategies to his litigation work. His work centers on investigating security breaches, assessing compliance with industry standards, and evaluating whether security measures were adequate. Mr. Johnson has been retained in numerous expert witness and consulting engagements across Florida and Georgia, involving cases related to apartment and condo security, video surveillance, and access control systems. His Physical Security Professional certification from ASIS International and Florida CPTED Practitioner certification from the Florida Department of Law Enforcement 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 security management and premises liability.

CondoSecurity ManagementVideo Surveillance+15
Accident Reconstruction

Kristopher J Seluga

Mechanical Engineering, Accident Reconstruction, Biomechanics and Safety Expert

Stratford, CT29 years+ yrs8.4

Kristopher J Seluga, Licensed Professional Engineer is a mechanical engineering expert specializing in accident reconstruction, biomechanics, and safety. With a career encompassing dynamic testing, software development for accident simulations, and forensic engineering, he brings a multifaceted analytical perspective to litigation work. His work centers on investigating motor vehicle and machinery accidents, assessing product liability claims, and evaluating safety compliance in construction and industrial settings. Mr. Seluga has been retained in numerous expert witness and consulting engagements across Connecticut and New York, involving motor vehicle accidents, product liability, and premises liability cases. His M.S. in Mechanical Engineering from M.I.T., along with OSHA 10-hour Construction Safety and Health 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 accident dynamics and safety standards.

Products LiabilityBiomechanicsSafety
Talk to us about your case
Find the right expert with greater clarity, confidence, and transparency.
© 2026 Witnessly. All rights reserved.