Standard of Care Expert Witnesses: 120

Shawn A. Hayden MD, PhD, MBA, President and CEO of ONTO Orthopedics, has over 25 years of experience as an Orthopedic Spine, Trauma and Sports Medicine Surgeon in the Dallas Fort Worth area. Dr. Hayden’s focus has always been in providing high-tech, high-quality care to his patients. For this reason, he is constantly training on some of the latest diagnostic and operative technologies. 

Litigation Support - Dr. Hayden assists medical doctors, scientists, lawyers and law firms with civil matters, malpractice cases, business guidance, and idea generation. His services include medical record review, thorough reporting of causation, depositions, and trial testimony as needed.

Areas of Expertise:

Dr. Hayden graduated from Harvard College. He received his medical degree from the University of Massachusetts Medical School and his orthopedic training at the Harvard Combined Orthopedics Residency Program. Dr. Hayden is also fellowship trained in orthopedic trauma and spine surgery at The Massachusetts General Hospital and The Beth Israel Deaconess Medical Center. Diplomate of the American Board of Orthopedic Surgery and a Fellow in the American Academy of Orthopedic Surgeons. Dr. Hayden is board certified in Orthopedic Surgery. 

Mr. Joshua Weiner, NABCEP, is a Solar Expert Witness with over 20 years of experience in policy, technology, sales contracts, project finance, permits and entitlements, project development and construction, engineering and project management, data acquisition and analysis that commonly apply to renewable energy and energy storage projects in residential, commercial, industrial, utility-scale markets, and energy storage.

Before founding SepiSolar, Mr. Weiner developed grid-connected energy storage and micro-grid projects with NRG's Station A R&D team (2015-2019) and NEXTracker's integrated energy storage program, where he played many roles in the development of solar and energy storage products and services, including design, engineering, business, policy, project, product, hardware, and software development. 

Litigation Support: Mr. Weiner brings his experience teaching courses through the UC Berkeley extension program, SepiAcademy to aid attorneys, plaintiffs, defendants, and judges in understanding the complex nuances of construction, technology, and policy of the solar and energy storage industries.

Areas of Expertise

View Joshua Weiner's Business Consultant Profile.

Thomas M. Selman, CFA, has served at the Financial Industry Regulatory Authority, most recently as Executive Vice President for Regulatory Policy and Legal Compliance Officer, for over 20 years. Mr. Selman oversaw more than a dozen regulatory programs and developed FINRA's formal Compliance Program. He is devoted to investor protection and market integrity.

Mr. Selman holds a JD degree., a CFA charter, and a CBDA from the Digital Assets Council of Financial Professionals. He is a member of three state bar associations.

Litigation Support - As President and CEO of Scopus Financial Group, Mr. Selman provides expert testimony in litigation for any consumer, industry, or associate person who is litigating a matter in which SEC or FINRA rules is an issue, including civil actions brought by customers, industry disputes, and commercial litigation. He has successfully testified in four FINRA arbitrations, one Delaware Chancery Court trial, one AAA arbitration, one United States District Court case, one California court case, and one SEC enforcement matter. Mr. Selman's senior regulatory experience allows him insight into the best approaches to expert testimony and the concerns of a regulator.

Areas of Expertise:

• Rules governing supervision of associated persons of broker-dealers and investment advisers
• Required written supervisory procedures of firms
• Sales practice rules of the SEC (such as the fiduciary duty of investment advisers and Reg BI)
• The 1940 Acts

View Scopus Financial Group's Business Consultant Profile.

John M. Schuberth, DPM, has extensive experience in Complex Foot and Ankle Surgery. Throughout his 40 year career, he has performed over 25,000 surgical cases and over 1,500 ankle replacements. He has published extensively on a wide variety of subject involving foot and ankle surgery (128 publications) and lectured all over the world on Foot and Ankle surgery. Please refer to his most recent CV for details. 

Litigation Support - Dr. Schuberth provides expert witness services to attorneys representing plaintiff and defense. His services include medical record review, thorough reporting, depositions, and trial testimony as needed. He has been deposed/testified over 20 times since 2020.

Areas of Expertise:

Associations:

• Editor in Chief for the Journal of Foot and Surgery for 7 years and Editor in Chief of Foot and Ankle Specialist for 6 years
• Former Chair of Board- American Academy of Foot and Ankle Osteosynthesis
• Former Course Chair-AO Podiatric Course  
• Past President, American College of Foot and Ankle Surgeons 1998-1999
• Board of Directors, ACFAS, 1992-2000
• Past Chair; Outcomes Research Committee, ACFAS
• Past Chair; Clinical Research; Research Fellowships, ACFAS        
• Past Chair, Preferred Practice Guidelines; Hallux Valgus
• Past Chair, Preferred Practice Guidelines; Ankle Sprain, Instability
• Former Member Ankle/Reconstructive Rearfoot Surgery Exam Committee
• American  Board Podiatric Surgery    1992-1996
• Former Chair, ABPS Ankle / Rearfoot Reconstructive Surgery. Exam Committee, 1996-2000
• Clinical Associate Professor, Department of Surgery, California College of Podiatric Medicine 1985-2003
• Licensing Commissioner, State of California 1986-1998
• Chief Examination Advisor, Board of Medical Quality Assurance 1986-1993
• Associate Faculty, San Francisco Orthopedic Residency Program
• Former Chair, Foot and Ankle Subgroup, National Product Comm-Kaiser
• Former Chair, Local Product Committee, Kaiser San Francisco
• Former Chair, Education Committee-American Academy Foot Ankle Osteosynthesis, 2013-2019
• Nine time awardee of Attending of the Year from several residency programs
• Board Certified American Board of Foot and Ankle Surgery (1985, Current)

Dr. John F. Doherty is an experienced Public and Private School Educator who has focused his work on improving schools through effective hiring practices, supervision and training of staff, and building a school culture of sustainability. In his current role, he serves as a School Liability Expert Witness.

Dr. Doherty has over 35 years of experience as a superintendent, assistant superintendent, principal, assistant principal, department chair, coach, and teacher. He is the co-chair of the Massachusetts Department of Education Safe and Supportive Schools Commission and chair of the Massachusetts Association of School Superintendents Professional Development Committee.

Litigation Support - Dr. Doherty provides consultation and expert witness services to plaintiff and defendant attorneys throughout the US and Canada. As a court-qualified education administration and supervision expert, he applies his experience, education, and training to the review and analysis of cases to determine the professional standard of care from case inception to resolution, including expert reports, deposition, and trial testimony.

Ideal Client Engagement - Attorneys litigating matters involving the question of liability for school or youth-serving agencies (daycare, camps, aftercare, church childcare) regarding the standard of care, student-supervision, staff training, in any type of injury or incident involving the school/agency, such as wrongful death, personal injury, sexual harassment/abuse, Title IX, Section 1983, in daycare through college/university and more.

Areas of Expertise:

Sanjay Adhia, MD, MRO, is triple-Board-Certified in Psychiatry, Brain Injury Medicine, and Forensic Psychiatry. In addition to forensic/expert witness practice, Dr. Adhia treats patients at renowned TIRR Memorial Hermann Hospital. His forensic practice focuses on the psychiatric impact of personal injury, medical malpractice, Multi-Plaintiff and Toxic Tort cases, testamentary capacity, undue influence and Dementia, TBI Brain injuries, competency, mental illness and complicating medical conditions. 

Dr. Adhia is among one of a select few Forensic Psychiatrists co-Board-Certified in Brain Injury Medicine. 

Dr. Adhia treats and opines about Traumatic Brain Injury (TBI) in litigation as it can result in psychiatric or neurocognitive impairments. He always assesses for Malingering.

In addition, Dr. Adhia works with Physicians for Human Rights to assess victims of kidnapping and false imprisonment, human trafficking, undue influence, physical and sexual abuse, rape, and fear of imminent death. 

In all populations, he assesses PTSD, Anxiety, Depressive Disorders, risk of suicide, and malingering. 

He is experienced in the treatment and impact of drug and alcohol abuse on decision-making. Dr. Adhia has also treated severe psychosis (Schizophrenia, hallucinations) and psychopathology. He formerly treated patients at a Maximum Security Prison and prison psychiatric hospital. 

Dr. Adhia’s findings consider complicating factors, e.g., emotional distress worsened by active physical and mental conditions, and pre-existing mental and physical illness (e.g. depression, PTSD, Dementia, Alzheimer's, medication.) 

As a physician, Dr. Adhia is uniquely qualified to review and examine and incorporate medical records and doctor reports in his reports. This is especially important in medical-malpractice & standard of care cases in treaters, inpatient, rehab, hospital, government, corrections and psychiatric hospitals. Dr. Adhia is skilled in these med-legal issues. 

He conducts Independent Medical Examinations, review of records, and reports findings to courts and attorneys. He is available to testify in civil, criminal, probate, Federal, Immigration, military, and administrative jurisdictions.

Kerry Mendes, M.D., Child, Adolescent and Adult Forensic Psychiatrist joined Dr. Adhia in 2022.

Tobias A. Mattei, MD, is a Neurosurgeon specialized in Brain Surgery and Complex Spine / Deformity Surgery. Besides his work as a neurosurgeon, Dr. Mattei hold the academic title of Adjunct Professor at the Division of Neurosurgery of St. Louis University. He has been an active member of the North American Spine Society, American Association of Neurological Surgeons, Congress of Neurological Surgeons, World Federation of Neurosurgical Societies, as well as many other international societies. 

Dr. Mattei is a member of the editorial board of The Spine Journal and Deputy Editor of the North American Spine Society Journal, the new open access initiative of the North American Spine Society. He is an active reviewer of several other neurosurgical journals including World Neurosurgery, Clinical Neurology & Neurosurgery, Journal of Clinical Neuroscience, Osteoarthritis & Cartilage, Journal of Engineering in Medicine: Part H, British Journal of Neurosurgery and Neurological Sciences.

As a researcher, Dr. Mattei has published more than 130 original research articles, having been cited more than 1400 times. He holds an unrestricted medical license in the states of Ohio, Missouri, New York, and Maine, and has never been submitted to any sanction or disciplinary action by any medical boards.

Litigation Support: Dr. Mattei provides expert witness services in the field of Spinal Injuries, Spine Surgery, Spinal Care, and Neurosurgery. He has provided expert review services for several scientific funding agencies in the U.S. (including the NIH Panel for Clinical Neurophysiology, Devices, Neuroprosthetics, and Biosensors) as well as abroad (including the Innovation and Technology Commission/ Hong Kong SAR Government and The Brain Tumor Charity - New Ideas Award/UK). 

Dr. Mattei's  litigation support services are available to attorneys for plaintiff and defense and include review of hospital records, medical reports, imaging results, operative reports, patient's evolution, depositions, and trial testimony.

Areas of Expertise:

Christopher M. Daft, PhD, is an award winning, Oxford Educated scientist whose areas of expertise include medical imaging, artificial intelligence, semiconductors, medical devices, sensors, MEMS, signal processing, and image processing. He holds 23 United States Patents with 20 applications pending, Dr. Daft has diverse industry experience including multi-nationals such as GE, Medtronic, Fujifilm, Samsung, and Siemens as well as several start-ups. 

He has testified at trial 5 times and been deposed 15 times.

Dr. Daft has been an Institute of Electrical and Electronic Engineers (IEEE) Senior Member since 2004. He has three years of experience teaching electrical and computer engineering at the University of Illinois. 

Dr. Daft holds a BA and MA in Physics from Oxford University as well as Doctorate from Oxford in Materials Science.

Litigation Support - Dr. Daft provides litigation support in the areas of Intellectual Property and Medical Devices including Imaging, particularly Medical, Patents, and more. His experience includes a variety of cases in the areas of wearable electronics, imaging systems, and surgical technology. Dr. Daft has extensive deposition and trial testimony experience.

Areas of Expertise:

View Dr. Christopher Daft's Consulting Profile.

Consultants. Experts. Innovators.™

Operating from more than 110+ offices around the globe, we provide services to corporations, insurance companies, law firms, and government agencies. 

Our quantum and delay experts are experienced in the following areas:

Whether the matter relates to construction or insurance, we bring years of valuable industry experience to help our clients limit long and costly formal proceedings. Our experts can operate individually or collaboratively as an integrated team, providing clients with unbiased assessments of construction delays and their cost implications and contract dispute assistance. Backed by evidence and research, Rimkus experts serve as impartial voices, presenting compelling arguments and providing professional testimony that sheds light on the critical intricacies of complex, global issues.

Rimkus Global Services Overview

OUR EXPERT SERVICES EXPERTISE

DELAY EXPERTS

Construction delays can have significant financial implications and lead to strained relationships on a project. Rimkus delay experts understand schedules, project management, and contractual obligations. We can analyze complex timelines, identify causation, measure the effect on the project’s deliverables, and provide expert opinions that stand up to scrutiny in legal proceedings. Our Delay Experts are experienced in the following areas:

• Extension of Time Assessment
• Disruption Analysis
• Project Planning
• 4D Modelling and Visualization

QUANTUM EXPERTS

Quantum disputes require a unique set of skills and expertise. Rimkus’ quantum expert witnesses specialise in evaluating and quantifying the financial loss or damage from a variety of matters, including breaches of contract, valuation issues, or financial loss claims. In addition, our team is often engaged on expert advisory commissions, helping clients build an appropriate commercial strategy to navigate a complicated or contentious issue and assisting the client in achieving its targets. Our quantum specialists are well-versed in all aspects of dispute resolution, whether through litigation, arbitration, adjudication, mediation, or complex negotiation. Several members of the Rimkus quantum team are multilingual, allowing us to help clients from jurisdictions across the globe. Our Quantum Experts are experienced in the following areas: 

• Contract Administration
• Damages Claims 
• Quantity Surveying Best Practice
• Quantum Assessment and Analysis
• Loss and Expense Claims 

Visit our full suite of: Delay and Quantum Expert Services.

GLOBAL OFFICES

Rimkus operates from 110+ offices worldwide, with headquarters in the following cities.

View a full list of Rimkus Office Locations.

View Rimkus Forensic Expert Services Profile. 
View Rimkus Life Sciences Expert Services Profile.

Mark E. Rieser, II, MS, PE, AIA, GBC, GEC has over 30 years of experience in the Engineering, Architectural, Construction, and Building Design industry. He provides his clients with a comprehensive knowledge of Engineering, Construction Technology and Construction Standards of Professional Practice. 

Background Experience - President of an “active” Design and Building company with a professional staff and Headquarter offices in San Jose and Los Angeles, and offices in Sacramento and San Francisco. Mr. Rieser has managed, designed, and constructed over 4,000 units to include high-rise, single family homes, condominiums, townhomes, podiums, apartments, and commercial buildings, His experience includes building and roadway design, construction, management, with designs of over 500 miles of asphalt and roadway improvements, tunnels, San Francisco Airport, Santa Clara Light Rail, Southern Pacific Railroad, Caltrans, and BART. 

Mr. Rieser has an insightful understanding of Civil / Structural Engineering, Soil Engineering, Transportation, Traffic Engineering, Hydraulic Engineering, Safety Expert, OSHA Standards, Architectural Design, Asphalt Design, Cost Estimation, Public Works Design Bidding and Estimation, General Engineering, General Building, and an Accident Reconstruction expert. “Our bids are not just a tool but are numbers that we be use to finish the work, accurately, on-time, and safely.” 

Forensic Construction and Engineering - Mark Rieser is a renowned forensic expert with the knowledge to safeguard clients from unwanted litigation as well as support both plaintiffs and defendants. He works closely with insurance companies and attorneys on various public, city, and state cases throughout the western United States. To date, he has been designated as an expert in over 550 Forensic Construction and Engineering cases throughout the United States. Mr. Rieser has been designated and testified Court as an expert in the following categories:

View Mark Rieser's Consulting Profile.

Howard is one of America's most sought after Restaurant, Bar, Food, & Beverage Industry Experts in the country. With 38+ years of experience, Judges & Juries respect Howard's industry expertise in regard to his restaurant expert witness& restaurant litigation support services - having provided expert witness testimony, opinions, and reports in both State & Federal Cases for Plaintiffs & Defendants. 

• Federal Certification with 29 CFR 1910 from the Occupational Safety & Health Administration

• Certified Forensic Consultant (CFC)-the American College of Forensic Examiners 

• Hazard Analysis & Critical Control Points Manager Certification (HACCP) 

• National Environmental Health Association Certification • ServSafe Food Safety

• On-Premise Alcohol - TIPs 2.0

Nationwide Services - NO CHARGE for Domestic Travel

350+ Litigation 

400+ Pre-Litigation

State & Federal Cases - Plaintiffs & Defendants

Restaurant, Bar & Hospitality Industry Matters - Since 1987

Highly-recognizable books, "The Complete Idiot's Guide to Starting A Restaurant" (1st & 2nd Ed) and "Restaurant OSHA Safety and Security: The Book of Restaurant Industry Standards & Best Practices", found in 76 countries around the globe. 

Howard Cannon - Restaurant Expert Witness 

With 350+ Litigation and 400+ Pre-Litigation cases as a Restaurant Expert Witness, Food Safety & Contamination Expert, and Restaurant & Bar Safety & Security Expert, Howard provides Credibility, Integrity, and Unbiased Analysis & Reports. Howard is well-spoken - having given hundreds of restaurant, food service & hospitality industry speeches and seminars, and is quite comfortable in any court of law. He is a published author/experienced writer with books & articles published in dozens of markets around the globe - delivering clear & concise expert reports with an effective and efficient opinion & basis. Howard NEVER misses a deadline – his expert witness reports & opinions are always on time.

Areas of Expertise:

Website:  www.RestaurantExpertWitness.com  

Youtube: https://www.youtube.com/user/RestaurantExpertWtns/videos  

Facebook: https://www.facebook.com/RestaurantExpertWitnessServices

LinkedIn: https://www.linkedin.com/company/restaurant-expert-witness/

Consulting Profile: View Howard Cannon's Consulting Profile  

Christopher Hanson, JD, CCIM, has over 44 years of experience in the Real Estate Industry. A retired trial lawyer of over 25 years who's dealt exclusively with real estate cases, Mr. Hanson currently provides subject matter expertise in all areas of real estate litigation.

Background Experience - As a California real estate trial attorney, Mr. Hanson has participated in over 880 Trials, Arbitrations, and Mediations (only 3 UDs). Cases have included negligence, fraud, non-disclosure, breaches of fiduciary duty, and contract. He's defended and sued brokers and their insurance companies. He has represented bidders, borrowers, and banks in regard to foreclosures; and both sides in loan workouts, and worked with national chains doing state-wide store rollouts, and lease renegotiations.  

Prior to his time as an attorney, Mr. Hanson worked for 12+/- years as a Real Estate Broker, actively selling and leasing property (commercial and residential). He holds a CCIM designation, earned by doing deals.  Before his role as a broker, he spent 7+/- years as a title insurance company Advisory Title Officer, where he researched and wrote Preliminary Reports.

Litigation Support - Mr. Hanson offers a balanced and unbiased opinion. His services are available to attorneys representing plaintiff and defendant and include document review, depositions, and discovery, along with arbitration and mediation. His opinion takes into account all the technicalities and nuances of real estate along with his 4 decades of experience, and is delivered in a way a jury can easily understand. 

Areas of Expertise:

Ray S. Kim, Ph.D., is a Licensed Clinical Psychologist and Board Certified Forensic Psychologist. Dr. Kim is also a Board Registered Mental Illness / Substance Abuse Provider, Diplomate of the American Psychotherapy Association, Diplomate of the American Board of Psychological Specialties, Fellow of the American College of Forensic Examiners Institute, and Fellow of the American College of Advanced Practice Psychologists. 

Dr. Kim is currently the Director of Chicago Metropolitan Forensic Services at the Illinois Department of Human Services where he supervises a team of clinical psychologists and social workers who evaluate the placement of individuals into forensic facilities. He also serves as the Director of Clinical Training at Chicago Metropolitan Forensic Services where he developed and supervises a forensic practicum program which provides opportunities for specialized clinical training in the area of forensic psychology. 

Litigation Support - Dr. Kim has testified in over 50 cases in both criminal and civil court proceedings. He is sensitive to the nature of legal matters, and provides comprehensive, timely, and professional services. Dr. Kim's services are available to attorneys or defendants seeking a qualified evaluator to help support a case, or wishing to obtain a second opinion on a legal matter already in progress. He is skilled in utilizing the field of psychology's most up-to-date assessments to provide recommendations for prosecution or defense teams. 

Areas of Expertise:

• Psychological Evaluations
• Pre-Sentence Evaluations
• Sex Offender Evaluations
• Violence Risk Assessments
• Competency to Waive Miranda Rights
• Diminished Capacity
• Fitness for Duty Evaluations
• Substance Abuse Assessments
• Independent Medical Examinations (personal injury, workers' compensation, disability determination, malpractice)
• Detection of Malingering
• Federal Evaluations (competency to stand trial, criminal responsibility)

View Dr. Kim's Consulting Profile.

Dr. Yana Puckett, MD, MBA, MPH, MSc, FSSO, is a double board-certified Breast Surgical Oncologist specializing in the diagnosis and surgical management of breast cancer. Fellowship-trained in Complex General Surgical Oncology, she provides expert review of:

Dr. Puckett performs both breast cancer surgery and oncoplastic reconstruction, offering a unique dual perspective on surgical decision-making, technique, complication patterns, and causation. She evaluates adherence to national guidelines (NCCN, ASCO, SSO/ASTRO) and key trial data including Z0011, SOUND, and targeted axillary dissection principles.

Her expert services include medical record and imaging review, operative analysis, evaluation of diagnostic timelines, opinions on standard of care, written reports, affidavits, deposition testimony, and trial testimony. She also performs Independent Medical Examinations (IMEs) for breast cancer–related disability questions.

Dr. Puckett is known for clear, concise, evidence-based opinions and strong communication with attorneys. She accepts select plaintiff and defense cases nationwide.

Neal C. Buddensiek, MD, DNBPAS, HMDC, CMD, WCC has over 17 years of experience practicing Internal Medicine, and over 11 years of experience practicing as an attending physician in Post Acute Care. 

Dr. Buddensiek is medical consultant for one of the largest Catholic Long-Term Care / Senior Living companies in the United States (26 skilled nursing facilities comprising 2,100+ beds, 28 assisted living facilities comprising 2,100+ units, 5 Midwestern states). He holds active medical licenses in multiple Midwestern states. For 5 years, Dr. Buddensiek has taught Internal Medicine residents and nurse practitioners about nursing home and residential care.

Dr. Buddensiek is an Expert in:

• Long Term Medical Care and Administrative Oversight (8 skilled nursing facility medical directorships; 1000+ resident chart reviews for safety and quality control).
• Assisted Living Medical Care and Administrative Oversight (5 assisted living facility medical directorships; 500+ resident chart reviews for safety and quality control). 
•  Hospice Medical Care and Administrative Oversight (2 hospice agency medical directorships; average daily census 400+ hospice patients, 3 Midwestern states). 

Areas of Expertise: