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 109–126 of 3,373 experts

Forensic Engineering

Derek B. Gilboe, PE, PEng, CEng MIEI

Managing Director

Spring, TX★ 9.1

Derek B. Gilboe, PE, PEng, CEng MIEI is a forensic engineering expert specializing in pipeline safety and integrity management. With a career spanning metallurgical engineering, asset integrity management, and failure investigations, he brings a multidisciplinary perspective to litigation work. His work centers on investigating pipeline failures, assessing asset integrity, and evaluating whether industry standards were met in engineering practices. Mr. Gilboe has been retained in numerous expert witness and consulting engagements across North America and internationally, involving energy, oil and gas, and pipeline industries. His BSc in Metallurgical Engineering, along with certifications such as Certified Welding 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 technical failures and safety compliance.

Integrity EngineeringFailure InvestigationsPipeline Safety+4
Plastic Surgery

JAMES APESOS, M.D., F.A.C.S.

Plastic and Reconstructive Surgery Expert Witness

Dayton, Ohio★ 9.1

JAMES APESOS, M.D., F.A.C.S. is a plastic and reconstructive surgery expert specializing in expert witness testimony for cosmetic, reconstructive, and hand surgery cases. With a career encompassing extensive clinical practice, academic appointments, and research contributions, he brings a comprehensive surgical perspective to litigation work. His work centers on investigating surgical outcomes, assessing procedural complications, and evaluating whether standard of care was met. Dr. Apesos has been retained in numerous expert witness and consulting engagements across Ohio, Kentucky, and other states, involving cases of surgical complications, pediatric surgery, and burn injuries. His Doctor of Medicine from Georgetown University School of Medicine, along with certifications such as Board Certified, American Board of Plastic Surgery, and Certified, Added Qualifications in Surgery of the Hand, 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 plastic and reconstructive surgery.

Reconstructive SurgeryCosmetic SurgeryHand Surgery+3
Human Resources and Employment

Elliot D. Lasson, Ph.D.

Human Capital Consultant and Board Certified Licensed Psychologist

Baltimore, MD29 years+ yrs★ 9.1

Elliot D. Lasson, Ph.D., ABPP, SHRM-SCP is a human capital and organizational psychology expert specializing in employment law and workplace crisis intervention. With a career encompassing industrial and organizational psychology, talent management, and executive coaching, he brings a strategic and analytic framework to his litigation work. His work centers on investigating workplace practices, assessing compliance with employment standards, and evaluating whether organizational policies align with legal requirements. Mr. Lasson has been retained in numerous expert witness and consulting engagements across the United States, involving cases of wrongful termination, employability, and harassment. His Ph.D. in Industrial/Organizational Psychology, along with certifications such as Senior Professional in Human Resources and SHRM-Senior Certified 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 responsibility in disputes involving human resources and employment practices.

Talent ManagementWorkplace Crisis InterventionAssessment Solution Development and Implementation+7
Business Damages

Thomas M. Neches, CPA

Managing Partner

Los Angeles, California40 years+ yrs★ 9.1

Thomas M. Neches, CPA is a business damages and financial analysis expert specializing in litigation support. With a career spanning accounting, business valuation, and statistical analysis, he brings a comprehensive framework to litigation work. His work centers on investigating lost profits, assessing reasonable royalties, and evaluating whether corporate structures have been misused. Mr. Neches has been retained in numerous expert witness and consulting engagements across the United States, involving antitrust, breach of contract, fraud, intellectual property, and wrongful termination cases. His BA in Mathematics and Literature, along with certifications as a Certified Public Accountant, Accredited in Business Valuation, Certified Valuation Analyst, Certified Fraud Examiner, and Certified in Financial Forensics, 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 financial data and business valuations.

AccountingFinancial AnalysisBusiness Valuation+4
Real Estate

Jane Trust Ryan

Real Estate Brokerage Expert, Manager, Educator, MS

Hawthorne, NJ28 years+ yrs★ 9.1

Jane Trust Ryan, MS is a real estate brokerage expert specializing in standards of care, compliance, and fiduciary duties in real estate transactions. With a career spanning brokerage leadership, compliance oversight, and agent training, she brings a comprehensive understanding of real estate operations and regulatory frameworks to her litigation work. Her work centers on investigating agency relationships, assessing compliance with brokerage agreements, and evaluating whether fiduciary duties have been upheld. Ms. Ryan has been retained in numerous expert witness and consulting engagements across the northeastern United States, involving real estate brokerage management, agent misconduct, and broker malpractice cases. Her Master of Science in Education, along with active broker licenses in NJ, NY, and PA, 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 real estate transactions and brokerage practices.

Business OperationsStandards of CareReal Estate Brokerage Management+14
Toxicology

Margaret M. Gedde

MD, PhD, DABPath

Fredericksburg, VA40 years+ yrs★ 9.1

Margaret M. Gedde, MD, PhD, DABPath is a forensic toxicology expert specializing in cannabinoid pharmacokinetics and marijuana driving impairment. With a career encompassing clinical pathology, cannabinoid medicine, and forensic toxicology, she brings a multifaceted perspective to her litigation work. Her work centers on investigating forensic toxicology test results, assessing cannabinoid pharmacokinetics, and evaluating whether marijuana impairment influenced driving capabilities. Dr. Gedde has been retained in numerous expert witness and consulting engagements across the United States, involving criminal, civil, employment, parental, regulatory, and patent cases. Her MD from Stanford University School of Medicine and PhD in Biophysical Chemistry, along with her Board Certification in Clinical Pathology, 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 THC impairment and forensic toxicology testing.

Forensic toxicology test interpretationCannabinoid pharmacokineticsMarijuana driving impairment+6
Accounting

Dr. Barbara C. Luna

Forensic Accounting and Valuation Expert

Sherman Oaks, CAOver 30 years+ yrs★ 9.1

Dr. Barbara C. Luna, PhD, MS, BA, CPA, ASA, CVA, ABV, CGREA, CCREA, CREA, CFE, CFFA, CFF, CMC is a forensic accounting and valuation expert specializing in damages, valuation, and fraud litigation. With a career encompassing diverse sectors such as breach of contract, intellectual property, and business dissolution, she brings a multifaceted analytical framework to her litigation work. Her work centers on investigating fraud, assessing lost profits, and evaluating liability issues. Dr. Luna has been retained in numerous expert witness and consulting engagements across the United States, involving cases such as construction defects, securities fraud, and marital dissolution. Her PhD in Applied Mathematics from Harvard University, along with certifications such as Certified Public Accountant and Certified Fraud Examiner, 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 financial analysis and business valuation.

Breach of ContractBusiness InterruptionBusiness Dissolutions+22
Forensic Science

Kourosh Nikoui

Certified Forensic Identification Consultant

Newark, CA37 years+ yrs★ 9.1

Kourosh Nikoui, Certified Forensic Identification Consultant is a forensic identification expert specializing in latent print analysis and crime scene investigation. With a career spanning forensic photography, crime lab management, and forensic consultation, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating latent print impressions, assessing crime scene evidence, and evaluating the authenticity of forensic documentation. Mr. Nikoui has been retained in numerous expert witness and consulting engagements across the United States, involving complex forensic identification and crime scene reconstruction cases. His Bachelor Degree in Fine Arts in Photography, along with certifications as a Certified Latent Print Examiner, Certified Senior Crime Scene Analyst, and Certified Forensic Photographer, 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 identification and crime scene evidence.

CriminalistForensic IdentificationCrime Scene Investigation+6
Chemistry & Chemicals

Jihye Kim (Hanson)

Ph.D, PMP

Houston, TX15+ years+ yrs★ 9.1

Jihye Kim (Hanson), Ph.D, PMP is a chemical engineering expert specializing in product liability and safety, patent disputes, and toxicology. With a career spanning product development, chemical safety, and intellectual property across the oil & gas, water treatment, and agriculture sectors, she brings a multidisciplinary perspective to her litigation work. Her work centers on investigating product failures, assessing chemical exposure risks, and evaluating whether regulatory compliance was met. Ms. Kim has been retained in numerous expert witness and consulting engagements across the United States, involving cases in the oil & gas, water treatment, and agriculture industries. Her Doctorate in Chemical Engineering from Texas Tech University, along with her Project Management Professional (PMP) Certification, 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 chemical safety and product liability.

Chemical EngineeringProduct Development & FailuresProduct Liability & Safety+3
Premises Liability

Mark Harless

Security Consultant

Buford, GA32 years+ yrs★ 9.1

Mark Harless, MS, PSP is a security consultant expert specializing in security negligence and premises liability litigation. With a career that spans federal law enforcement and corporate cybersecurity, he brings a unique blend of investigative and strategic insight to his litigation work. His work centers on conducting security assessments, developing risk mitigation strategies, and evaluating compliance with industry standards. Mr. Harless has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to security negligence, premises liability, and complex fraud analysis. His Master of Science in Criminology from Florida State University, along with his Physical Security Professional (PSP) 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 physical security and threat intelligence.

SecurityPhysical SecurityCybersecurity+7
hospitality standard of care

Kenneth C. Free

Hospitality Industry Expert in Standard of Care and Operational Disputes

Greenwich, Connecticut53 years+ yrs★ 9.1

Kenneth C. Free, MBA, RRP, CMHS is a hospitality industry expert specializing in standard of care and operational disputes. With a career spanning hotel operations, asset management, development, and financial oversight, he brings a real-world operational framework to analyzing where deviations from industry standards may have occurred. His work centers on investigating hospitality standard of care, assessing business interruption damages, and evaluating whether hotel operations liability has been breached. Mr. Free has been retained in numerous expert witness and consulting engagements across the United States and internationally, involving hospitality standard of care, business interruption damages, and hotel operations liability. His MBA in Finance, along with Registered Resort Professional (RRP) and Certified Master Hotel Supplier (CMHS) 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 standard of care in disputes involving hospitality operations.

business interruption damageshotel operations liabilityfinancial impact assessment+2
Civil Engineering

Randy P. Wall, PE, MPA

Snow Sports Expert and Consulting

Boise, ID40+ years+ yrs★ 9.1

Randy P. Wall, PE, MPA is a civil engineering expert specializing in land development and residential structural engineering. With a career spanning civil engineering, land development, and regulatory agency processing, he brings a multifaceted perspective to litigation work. His work centers on investigating construction defects, assessing professional liability claims, and evaluating whether regulatory compliance has been met. Mr. Wall has been retained in numerous expert witness and consulting engagements across the United States, involving construction defects, land use disputes, and residential structural engineering cases. His Master of Public Administration in Public Administration, along with certifications such as Professional Engineering licenses in 13 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 responsibility in disputes involving civil engineering and land development.

Structural EngineeringLand DevelopmentResidential Structural Engineering+6
Mold

Dr. Lauren Sparks

DNP, CNP, APRN, PMHNP-BC, MA, RN

Santa Fe, NM6 years+ yrs★ 9.1

Dr. Lauren Sparks, DNP, CNP, APRN, PMHNP-BC, MA, RN is a Chronic Inflammatory Response Syndrome (CIRS) and mold illness expert specializing in cases involving toxic mold exposure and related health impacts. With a career that encompasses functional psychiatry, narrative therapy, and environmental illness, she brings a multidisciplinary approach to her litigation work. Her work centers on investigating the causation of CIRS, assessing the impact of mold exposure on health, and evaluating whether medical protocols align with established standards. Dr. Sparks has been retained in numerous expert witness and consulting engagements across New Mexico, involving cases of mold exposure and CIRS in residential and commercial properties. Her Doctor of Nursing Practice in Psychiatric Mental Health, along with certifications such as the Shoemaker Protocol Physician Certification, 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 mold-related illnesses.

PsychiatryChronic Inflammatory Response SyndromeErythromelalgia+2
solid state

Emmanuel Coffy

Attorney-At-Law & Certified Mediator

Maplewood, NJ30 years+ yrs★ 9.1

Emmanuel Coffy, MSEE, JD – Attorney-At-Law & Certified Mediator - USPTO Reg. No. 63,615 is a patent law expert specializing in patent infringement assessments and litigation support. With a career spanning solid-state electronics, semiconductor devices, and microelectronic circuits, he brings a nuanced understanding of technical complexities to his litigation work. His work centers on conducting expert interviews, drafting legal documents, and evaluating patent validity and infringement. Mr. Coffy has been retained in numerous expert witness and consulting engagements across the United States, involving patent infringement and intellectual property disputes. His J.D. in Intellectual Property from Seton Hall University School of Law, along with his registration with the United States Patent and Trademark Office (Reg. No. 63,615), reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of infringement and validity in disputes involving advanced technologies and intellectual property rights.

computer networksdigital engineeringcopyright infringement+12
OSHA

Dustin L. Hickey

Safety Expert Witness

Dickinson, TX22 years+ yrs★ 9.1

Dustin L. Hickey, CSP, CRSP, CMIOSH, CMQ/OE is a safety and health expert specializing in OSHA compliance and safety regulation litigation. With a career encompassing diverse roles in occupational safety and health, he brings a comprehensive understanding of regulatory frameworks and industry standards to his litigation work. His work centers on investigating compliance with safety regulations, assessing workplace hazards, and evaluating whether industry standards were met in cases of serious injury or fatality. Mr. Hickey has been retained in numerous expert witness and consulting engagements across the United States, involving serious injury, fatality, labor arbitration, and construction defect litigation. His Bachelor of Science in Occupational Safety and Health, along with certifications such as Certified Safety Professional (CSP), Canadian Registered Safety Professional (CRSP), and Chartered Member of IOSH (CMIOSH), 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 OSHA compliance and workplace safety.

SafetyFall ProtectionTrenching & Excavation+15
Inadequate/Negligent Security

Shawn F. Wurtsmith

Managing Partner | Expert Witness – Physical Security

Elizabeth, Colorado23 years+ yrs★ 9.1

Shawn F. Wurtsmith, MBA, PSP is a physical security expert specializing in inadequate/negligent security and premises liability litigation. With a career spanning security program management, threat and vulnerability assessment, and emergency response planning, he brings a strategic framework to analyzing security failures and operational deviations. His work centers on investigating security negligence, assessing premises liability, and evaluating whether emergency response protocols meet industry standards. Mr. Wurtsmith has been retained in numerous expert witness and consulting engagements nationwide, involving cases across governmental, healthcare, cannabis, petrochemical, hospitality, defense, and themed entertainment sectors. His Master of Business Administration in Business Management, along with certifications such as Physical Security Professional (PSP), 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 physical security standards and negligence.

Premises LiabilityCrime ForeseeabilityRisk Management+18
Engineering and Risk Management

Michael “Troy” Richardson

Design or CAD/CAM Engineering, Technical Writer, Manufacturer, Builder, Machinist & Certified Welder

Santaquin, Utah40 years+ yrs★ 9.1

Michael Troy Richardson, BS, MA, MS is an aerial adventure and amusement attraction safety expert specializing in litigation involving zipline and trampoline park accidents. With a career spanning engineering, technical writing, and product development, he brings a multi-disciplinary perspective to analyzing safety standards and operational compliance in the amusement industry. His work centers on investigating accident causation, assessing compliance with safety standards, and evaluating whether operational negligence contributed to incidents. Mr. Richardson has been retained in numerous expert witness and consulting engagements across the United States, involving cases in the aerial adventure, zipline, and amusement park industries. His MS in Engineering & Technology, along with certifications such as the National Board Certified Pressure Vessel Welder, 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 amusement ride safety and operational standards.

Design or CAD/CAM EngineeringTechnical WritingManufacturing+3
Mechanical Engineering

William Stamps Howard, Ph.D.

President

Charleston, SC35+ years+ yrs★ 9.1

William Stamps Howard, Ph.D. is a Mechanical Engineering and Industrial Automation expert specializing in intellectual property, safety engineering, and the design and development of industrial machinery. With a career spanning mechanical design, electrical design, software development, and industrial automation, he brings a multidisciplinary perspective to litigation work. His work centers on investigating mechanical failures, assessing compliance with safety standards, and evaluating whether design specifications meet contractual obligations. Mr. Howard has been retained in numerous expert witness and consulting engagements across the United States, involving patent, trade secret, tort, and contract cases. His Doctor of Philosophy in Robotics & Grasping, along with his Professional Engineer certifications in GA, NJ, and AL, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation and responsibility in disputes involving mechanical and industrial systems.

Intellectual PropertyMechanical DesignElectrical Design+3
Talk to us about your case
Find the right expert with greater clarity, confidence, and transparency.
© 2026 Witnessly. All rights reserved.