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 703–720 of 1,756 experts

hail damage
RP

Raymond P Gessner, M. Eng, P.E.

Expert Witness

Virginia Beach, VA26 years+ yrs★ 8.3

Raymond P Gessner, M. Eng, P.E. is a Structural Engineering and Forensic Science expert specializing in hail, wind, and foundation damage litigation. With a career encompassing diverse engineering disciplines, he brings a multifaceted perspective to his litigation work. His work centers on investigating structural failures, assessing damage causation, and evaluating whether industry standards were met. Mr. Gessner has been retained in numerous expert witness and consulting engagements across various regions, involving residential property damage, insurance denial cases, and natural disaster impacts. His Master Engineering degree from Old Dominion University, along with certifications such as Licensed Professional Engineer (P.E.) and HAAG Certified Master Damage 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 structural and environmental damage.

wind damagefoundation damagehail+14
Transportation
HF

Howard F. Berkowitz

Passenger Transportation Consultant and Expert Witness

Lake Worth, FL44 years+ yrs★ 8.3

Howard F. Berkowitz is a passenger transportation expert specializing in non-emergency medical transportation and paratransit operations. With a career spanning luxury sedan services, mass transit systems, and compliance management, he brings a multifaceted perspective to litigation work. His work centers on investigating safety practices, assessing ADA compliance, and evaluating whether transportation standards of care have been met. Mr. Berkowitz has been retained in numerous expert witness and consulting engagements across the United States, involving non-emergency medical transportation, wheelchair securement, and luxury sedan operations. His degree in Business Administration/Management, along with certifications as a Certified Wheelchair Securement Instructor and Certified Stretcher Securement Instructor, 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 transportation safety and compliance.

Travel & TourismNon-Emergency Medical TransportationWheelchair Securement & Mobility+17
Financial and Business Operations
EF

Edmund F. Hannon

Investment and Portfolio Management Expert

Mahwah, New Jersey30+ years+ yrs★ 8.3

Edmund F. Hannon CFA is an investment and portfolio management expert specializing in alternative investments and hedge fund operations. With a career spanning roles in asset management, risk management, and financial operations, he brings a strategic and operational framework to litigation work. His work centers on evaluating investment strategies, assessing operational compliance, and investigating financial practices. Mr. Hannon has been retained in numerous expert witness and consulting engagements across the United States, involving hedge funds, alternative investments, and fixed income securities. His Bachelor of Science in Finance from Pennsylvania State University, along with his CFA Charterholder 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 investment fund operations and financial practices.

Law Enf & Criminal Justice
MS

Marcus Sprague

Police Lieutenant (Ret.)

Nashville, TN25 years+ yrs★ 8.3

Marcus Sprague, Police Lieutenant (Ret.) is a law enforcement and criminal justice expert specializing in police practices and procedures. With extensive experience in SWAT command, critical incident management, and law enforcement training, he brings a strategic and operational perspective to his litigation work. His work centers on investigating use of force incidents, assessing tactical operations, and evaluating whether police procedures align with established standards. Mr. Sprague has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to SWAT operations, critical incident management, and police procedures. His Master of Science Degree in Law Enforcement Public Safety Leadership, along with Peace Officer Basic, Intermediate, and Advanced Certificates from the California POST Commission, 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 tactical operations and law enforcement practices.

Police Practices & ProceduresSWAT CommandCritical Incident Management+1
Automotive Engineering
IK

Ioannis Kanellakopoulos

Ph.D.

Redwood City, CA30+ years+ yrs★ 8.3

Ioannis Kanellakopoulos, Ph.D. is a technology and intellectual property expert specializing in civil litigation cases ranging from patent infringement to personal injury. With a career spanning advanced control design, telecommunications, and automotive systems, he brings a multifaceted technical perspective to his litigation work. His work centers on investigating patent validity, assessing technology compliance, and evaluating whether industry standards have been met. Mr. Kanellakopoulos has been retained in numerous expert witness and consulting engagements across the United States, involving telecommunications, automotive systems, and digital signal processing. His Ph.D. in Electrical Engineering from the University of Illinois at Urbana-Champaign, along with his designation as an IEEE Fellow, 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 technological systems.

TelecommunicationsCommunicationsNetworking+7
Software Engineering
BW

Bob Weiman

President, Oracle Engineering LLC

Sudbury, MA43 years+ yrs★ 8.3

Bob Weiman is a software engineering and embedded systems expert specializing in litigation involving medical devices, consumer products, and industrial control systems. With a career spanning microprocessor-based product design, medical software, and intellectual property, he brings a multidisciplinary framework to his litigation work. His work centers on investigating software malfunctions, assessing compliance with industry standards, and evaluating whether engineering practices meet regulatory requirements. Mr. Weiman has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to medical devices, patent infringement, and trade secrets. His BS in Computer Engineering from Boston University, along with his status as a Senior Member of the Institute of Electrical and Electronic Engineers (IEEE), 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 software engineering and embedded systems.

Medical DevicesMicroprocessor Based Product DesignEmbedded Systems
Plastic Surgery
EJ

Ethan J. Baughman, MD, PhD, FACS

Board-Certified Plastic & Reconstructive Surgeon

Westlake Village, California13 years+ yrs★ 8.3

Ethan J. Baughman, MD, PhD, FACS is a plastic & reconstructive surgery expert specializing in plastic surgery, reconstructive surgery, trauma care, wound management, and aviation medicine. With a career integrating active clinical practice and academic faculty roles, he brings a comprehensive perspective to litigation involving complex medical and aviation-related cases. His work centers on investigating surgical outcomes, assessing post-operative complications, and evaluating whether standard of care deviations occurred. Dr. Baughman has been retained in numerous expert witness and consulting engagements across California, involving cases related to plastic surgery, reconstructive procedures, and aviation medicine. His MD and PhD from the University of Texas Southwestern Medical Center, along with certifications such as Medical Laboratory Scientist (MLS) — ASCP and FAA Senior Aviation Medical Examiner, 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 surgical and aeromedical issues.

Aviation & AerospacePlastic & Reconstructive SurgeryCosmetic Surgery+11
Spine Surgery & Spine Care
BD

Brian D. Rudin, M.D.

Orthopedic Spine Surgeon

Westlake Village, CA18 years+ yrs★ 8.3

Brian D. Rudin, M.D. is an orthopedic spine surgery expert specializing in spine surgery, disc arthroplasty, and complex deformity cases. With a career encompassing leadership roles in orthopedic departments and extensive clinical practice, he brings a comprehensive understanding of surgical and non-surgical spine care to litigation work. His work centers on investigating surgical outcomes, assessing procedural adherence to standards, and evaluating whether deviations in care contributed to patient outcomes. Dr. Rudin has been retained in numerous expert witness and consulting engagements across the United States, involving personal injury cases, aviation accidents, and complex spine surgery disputes. His Medical Doctor degree from the University of California, Los Angeles, along with his Diplomat certification from the American Board of Orthopedic Surgery, 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 spinal cord injuries, disc replacement, and surgical complications.

Aviation & AerospaceSpine SurgeryDisc Arthroplasty+2
Aviation & Aerospace
FV

Frederick Vaughan Plummer II

Aviation Maintenance, Leasing & Asset Management Executive

Newnan, Georgia35 years+ yrs★ 8.2

Frederick Vaughan Plummer II, FAA Airframe & Powerplant Certificate, Cerakote Certified Laser Applicator, Cerakote Certified Applicator is an aviation maintenance and asset management expert specializing in FAA and EASA regulatory compliance. With a career spanning FAA-certified maintenance, airline operations, global aircraft leasing, and asset management, he brings a comprehensive framework to litigation work involving technical assessments and compliance evaluations. His work centers on investigating maintenance records, assessing lease return conditions, and evaluating whether regulatory standards have been met. Mr. Plummer has been retained in numerous expert witness and consulting engagements globally, involving aircraft maintenance contracts, lease agreements, and regulatory compliance cases. His FAA A&P Program education from Broward Community College, along with his FAA Airframe & Powerplant Certificate and Cerakote 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 compliance and responsibility in disputes involving aircraft maintenance and leasing operations.

ManagementAircraft Maintenance & AirworthinessLease Return & Redelivery+7
Aviation & Aerospace
WH

William H. Highsmith

Captain

Atlanta, GA34 years+ yrs★ 8.2

William H. Highsmith, ATP, CFI, CFII, MEI is an aviation safety and pilot training expert specializing in airline operations management and pilot examination. With a career spanning pilot training, airline operations, and aviation safety, he brings a comprehensive framework to litigation work involving complex aviation disputes. His work centers on investigating incident and accident causation, assessing compliance with aviation safety standards, and evaluating whether pilot training protocols were adhered to. Mr. Highsmith has been retained in numerous expert witness and consulting engagements across the United States, involving airline operations, pilot training programs, and aviation safety management. His Bachelor of Science in Aeronautical Science, along with certifications such as Air Line Transport Pilot and Certified Flight Instructor with Instrument and Multi-Engine ratings, 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 pilot error, aviation management, and airline operations.

SafetyPilot Expert, Airline and General AviationAeronautical Decision Making (ADM)+18
Aviation & Aerospace
MG

Matthew Gee

Aviation Consultant

Dublin30+ years+ yrs★ 8.2

Matthew Gee, Aviation Consultant is an aviation operations expert specializing in aviation ground handling and insurance-related litigation. With a career encompassing roles in flight operations management, auditing, and consultancy, he brings a strategic operational perspective to his litigation work. His work centers on investigating compliance with aviation regulations, assessing operational safety standards, and evaluating whether industry practices align with contractual obligations. Mr. Gee has been retained in numerous expert witness and consulting engagements across Europe and the United States, involving aviation operations, ground handling, and insurance disputes. His Diploma in Aviation Leasing and Finance, along with IS-BAO and IS-BAH auditor 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 aviation safety and compliance.

InsuranceAviation operationsAviation ground handling+1
Expert Witness
SD

Shaun D Carstairs, MD DFACMT FACEP

MD, FACEP, FACMT

Rancho Santa Fe, CA★ 8.2

An expert in emergency medicine and medical toxicology, Shaun D Carstairs, MD DFACMT FACEP provides forensic analysis related to acute care and substance use treatment in emergency settings. With extensive experience in managing patient care during crises, including COVID-19 response coordination, he is adept at assessing cause of loss and determining damage assessment in medical contexts. His background includes providing specialty toxicology consulting services across multiple hospitals, ensuring compliance with CDC/FDA guidelines. Dr. Carstairs is licensed to practice in multiple states, enhancing his capacity to serve in diverse legal jurisdictions.

Accident Reconstruction
BT

Bradley T Cook, PE, MSE, CXLT

Expert Witness

Sarasota, FL24 years+ yrs★ 8.2

Bradley T Cook, PE, MSE, CXLT is an accident reconstruction and biomedical engineering expert specializing in auto accident and collision analysis litigation. With a career encompassing accident reconstruction, crash data retrieval, and human factors analysis, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating accident causation, assessing human factors in crash scenarios, and evaluating whether safety standards were met in product liability cases. Mr. Cook has been retained in numerous expert witness and consulting engagements across Michigan and Florida, involving auto accidents, premises liability, and product liability cases. His Master of Science in Biomedical Engineering, along with his Licensed Professional Engineer (PE) credentials in Michigan and Florida, 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 safety compliance.

Biomedical Engineering
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
Human Factors
KN

Kenneth Nemire, PhD, CPE

Forensic Human Factors Expert

Campbell, CA33 years+ yrs★ 8.2

Kenneth Nemire, PhD, CPE is a forensic human factors expert specializing in products liability and safety-related litigation. With a career spanning human factors, warnings and labels, and safety standards, he brings a multidisciplinary perspective to litigation work. His work centers on investigating product safety, assessing driver behavior, and evaluating whether safety standards were met. Mr. Nemire has been retained in numerous expert witness and consulting engagements across the United States, involving cases such as slip, trip, and fall incidents, vehicle and auto accidents, and workplace safety. His PhD in Human Factors, along with certifications as a Certified Professional Ergonomist and Certified XL Tribometrist, 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 perception/reaction analysis and distracted driving.

Warnings & Labels
Slip Trip & Fall
MW

Michael Wagner

MBA, CAFM, CSP, ASM, ASCA-C

Parker, Colorado14 years+ yrs★ 8.2

Michael Wagner, MBA, CAFM, CSP, ASM, ASCA-C is a snow and ice management expert specializing in premises liability and fleet management litigation. With a career encompassing fleet operations, safety management, and private contracting for municipalities, he brings a multifaceted perspective to his litigation work. His work centers on investigating contract compliance, assessing risk exposures, and evaluating whether industry standards in snow and ice management have been met. Mr. Wagner has been retained in numerous expert witness and consulting engagements across the United States, involving cases in premises liability, snow and ice management, and transportation safety. His Master of Business Administration in Management and Leadership, along with certifications such as the Certified Snow Professional (CSP) and Certified Automotive Fleet Manager (CAFM), 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 snow and ice management practices.

Premises LiabilityFleet ManagementSnow and Ice Management+1
Vehicular Accident Reconstruction
MM

MARTIN M BALABAN, PhD, PE

Consulting Engineer

Encino, CA30+ years+ yrs★ 8.2

MARTIN M BALABAN, PhD, PE is a consulting engineer expert specializing in vehicular accident reconstruction and occupant biomechanics. With a career spanning vehicular system analysis, premises liability, and industrial safety, he brings a multidisciplinary engineering perspective to litigation work. His work centers on investigating vehicular collisions, assessing occupant biomechanics, and evaluating whether vehicular system defects contributed to incidents. Mr. Balaban has been retained in over 2000 expert witness and consulting engagements across the United States, involving vehicular accident reconstruction, premises liability, and product liability cases. His PhD in Mechanical Engineering from the University of California at Berkeley, along with his Licensed Safety Engineer certification by the State of California, 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 vehicular accidents and safety engineering.

Occupant BiomechanicsVehicular System or Component DefectsPremises Liability+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
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