Medical Specialists Expert Witnesses: 91

• Pediatric Orthopaedic Surgery
• Orthopaedics in Adolescents
• Pediatric Trauma - Fractures, Growth Plate Injuries, Dislocations
• Child Abuse – Fractures, Fragile Bones (Osteogenesis Imperfecta
• Pediatric Neuromuscular Diseases - Cerebral Palsy, Spina Bifida, Muscular Dystrophy, Peripheral Neuropathies
• Hip Diseases in Children - Hip Dislocation, Perthes Disease, Slipped Capital Femoral Epiphysis
• Peripheral Deformities - Club Foot, Rocker Bottom Foot, Pes Cavus, Pes Planus, Leg Length Discrepancy, Missing Bones
• Lower Limb Deformities – Club Foot, Flat Foot, Rocker Bottom Foot, Leg Length Discrepancy, Missing Bones

John Budny, PhD, provides expert Toxicology opinions based on recognized and accepted medical knowledge to determine if prescriptions, over-the-counter medications, and drugs of abuse that cause adverse medical events. With a PhD in basic medical science and a 40-year career as a practicing toxicologist, Dr. Budny combines the science of toxicology with medical knowledge to fully understand the ramifications of an adverse medical event caused by prescribing errors, faulty medications, or failure in the health care delivery process.

Dr. Budny has conducted scientific investigations in toxicology and has published the results of his research. In addition to being as an expert witness, Dr. Budny provides scientific contributions by writing book reviews of relevant topics related to toxicology and forensics. He is also on the Editorial Board of the International Journal of Toxicology. In his position on the Editorial Board, Dr. Budny reviews manuscripts on general toxicology and forensic topics that are submitted and proposed for publication in the journal. He also writes book reviews that cover the entire breadth of toxicology. 

Litigation Support - Dr. Budny has over 25 years of experience as an expert witness. He has been retained in over 300 cases in which he has opined in reports, depositions, and in court testimony about cause and effect relationships between chemicals and adverse reactions and toxicities. While his forensic toxicology practice is not limited to any specific type of chemical, most of his retention as an expert has been for prescription drugs, illicit drugs, dietary supplements and nutritional products.  

Successfully resolved complex medical issues involving pharmaceuticals and drugs:

The Physician Assistant Experts Network™ is a referral resource for attorneys seeking expert medical opinions on the standard of care provided by physician assistants and advanced nurse practitioners. The PA Experts Network™ was founded by Jeffrey G. Nicholson, PA-C, Ph.D., M.Ed., MPAS, an experienced medical-legal consultant and a leader in the physician assistant profession. He will either help you personally or facilitate a physician assistant expert from his network of board certified Physician Assistant Experts in all medical specialties. See his article on this website. Practicing 30 years, a PA Educator, Assistant Professor, and Director of the University of Wisconsin Physician Assistant Program.

Services Include:

• Medical Records Review, Deposition, Testimony, Referrals of PAs, NPs, Midwives, CRNAs, and allied health PT, EMT etc.

Education and Certifications:

• Ph.D., University of Wisconsin-Madison, WI, 2008
• Master of Education, M.Ed., Harvard University, Cambridge, MA, 1989
• Masters Degree in Physician Assistant Studies, University of Nebraska Click here for Website to see complete resume and photo.

Thomas J. Zaydon, MD, FACS,  is a Board Certified Plastic Surgeon with over 30 years of experience.. Dr. Zaydon is the founder of The Plastic Surgery Institute of Miami and is a recognized authority on Plastic and Reconstructive Surgery. During his tenure, he continues to work in the emergency room, providing surgical evaluations and performing procedures on patients who need traumatic care.

Dr. Zaydon is certified by the American Board of Plastic Surgery, is a member of the American Society of Plastic Surgeons, and a Fellow of the American College of Surgeons. He has authored numerous articles and chapters on various aspects of plastic surgery. 

Litigation Support - Dr. Zaydon serves as a plastic surgery expert witness on liability cases around the country. He has had the opportunity to work both with defense and plaintiff attorneys. He is a certified expert witness in the field of plastic surgery for the State of Florida. He works for both plaintiff and defense attorneys.

Dr. Zaydon can provide factual synthesis regarding plastic surgery management. As part of his expertise, he navigates medical records and understands procedural terminology. On request, he has prepared numerous comprehensive plastic surgery examinations in conjunction with depositions, trial testimony, and legal documents.

Video: Plastic Surgeon As Expert Witness: How to Choose Your Expert Witness - A Guide for Lawyers

Areas of Expertise:

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:

Research & Planning Consultants, LP (RPC) has been assisting clients with expert services for over 45 years, including consulting and expert witness testimony for personal injury, healthcare litigation, commercial litigation and Certificate of Need matters. RPC also offers a wide selection of health data. They have served clients across the U.S, from Alaska to Florida and from New England to California. 

A Complete Team of Damages Experts for Personal Injury Litigation

Research & Planning Consultants, LP provides the following services: 

• PERSONAL INJURY - RPC provides comprehensive damages analysis in personal injury litigation. Their expert team has life care planners, vocational evaluators, board-certified physicians, economists and neuropsychologists. 

Areas of Expertise include: Life Care Plans, Loss of Earning Capacity or Support, Present Value of Damages, Medical Bill Analysis, Chargemaster Analysis, Neuropsychological Testing & Traumatic Brain Injury, Vocational Evaluations, IMEs, Section 18.001, Prestanding ED Chargemaster Analysis

• COMMERCIAL LITIGATION- RPC has provided expert analysis on commercial litigation concerning many industries: chemicals, refining, forestry, waste management, pipelines, water resources, oil and gas EDP, fisheries, agriculture, electrical generating plants, transmission lines, telecommunications, and real estate development. Our special expertise in the healthcare industry has proven valuable to business litigators unfamiliar with this complex industry.

Areas of Expertise: Breach of Contract / Commercial Economic Damages, Construction Disputes, Litigation over Non-Competitive Agreements, Environmental Torts and Toxic Torts, Commercial Disparagement, Wrongful Termination

• HEALTHCARE LITIGATION - RPC offers economic, statistical, data and clinical analysis in a wide range of healthcare litigation. They have experience with payment disputes, qui tam litigation, physician-hospital disputes, practice valuations and construction litigation. 

Areas of Expertise: Qui Tam Healthcare Litigation, Medical Staff Disputes, Professional Liability, Payment Disputes, Health Facility Construction Disputes, Freestanding ED Chargemester Analysis

• CERTIFICATE OF NEED - RPC provides Certificate of Need (CON) planning services nationwide. We have over 35 years of experience developing regulatory strategy, preparing applications and testifying in public and administrative hearings.

Areas of Expertise: Satellite Hospitals, New Hospitals, Relocation and Transfer of Beds, Observation Beds, Geriatric Psychiatric Units, Children’s Hospitals, Comprehensive Inpatient Rehabilitation Units, Neonatal Intensive Care Units, Open Heart Surgery Services, Long Term Acute Care Units, Projects that exceed CON Capital Threshold Limits, Projects for Specifically Listed Services, Programs Requiring CON, Hospices, Senior Living Facilities

Ronald T. Luke, JD, PhD, is a principal consultant and President of RPC, LP. Ron joined RPC in 1976 and became its president and principal owner in 1979. He has consulted on projects for health care providers, managed care plans and public agencies in more than 25 states. He also serves as an expert witness in trials, administrative proceedings and legislative hearings.

Active in the Health Policy Arena, Dr. Luke has been accepted as an expert in Economics, Socioeconomic Impact Analysis, and Policy Analysis by state and federal courts, and state administrative agencies. The types of cases in which he has provided expert testimony include personal injury, contractual disputes, health care payment disputes, construction defects, utility construction permitting, and certificate of need. He has testified on health care matters including market structure, billing fraud and abuse, reasonableness of charges, medical staff credentialing, workers’ compensation fee guidelines, utilization review, physician contracts, and managed care contracts.

Kacy L. Turner, MS, CRC, CVE, CLCP, is a Certified Life Care Planner and Vocational Consultant with RPC. She has over 20 years of experience in Rehabilitation. Ms. Turner has experience writing life care plans for both plaintiff and defense clients. She has experience as a rehabilitation consultant in three states and has been qualified as a testifying expert in state and federal court.  

Ms. Turner has worked on cases in several states as well as the country of Trinidad. To determine the pre-injury and post-injury employability in personal injury cases, she provides vocational testing, transferable skills analysis, job requirements analysis, rehabilitation plans, and definition of reasonable accommodations under the American with Disabilities Act. She is a member of the International Association of Rehabilitation Professionals, the Texas Association of Rehabilitation Professionals and Providers of Services, and Vocational Evaluation and Career Assessment Professionals.

Brian Piper, PhD,  is an Economist with RPC specializing in Quantitative Analysis and Modelling. He works on a variety of cases including personal injury and certificate of need. He is experienced in data extraction, management, simulation, and analysis using STATA, SQL, ARC GIS and a variety of other programs. Dr. Piper has taught graduate classes in statistics and econometrics in both MBA and Ph.D. programs.

Dr. Piper is an experienced expert, providing testimony, reports, and affidavits on the issues of economic damages in personal injury litigation, healthcare litigation, False Claims Act litigation, and other commercial litigation. He has testified on behalf of plaintiffs and defendants. 

Dr. Piper specializes in the economics of healthcare. He has been retained by healthcare providers and insurers in payment disputes. He has analyzed the reasonableness of charges and expected payment for past and future medical services for providers, insurers, plaintiffs, and defendants. Besides work in litigation, Dr. Piper has provided analysis of Certificate of Need applications and the economic impacts of proposed legislation.

• Neurological Injuries (Brain and Spinal Cord Injury)
• Burns
• Orthopedic Injures
• Amputation
• Chronic Pain
• Post Traumatic Stress Disorder

• Expert Testimony
• Life Care Planning
• Mini/Preliminary Life Care Plan
• Video Services
• Medical Record Review
• RN Independent Medical Exam
• Medicare Set Aside Trust Analysis
• Medical Bill Auditing
• Questions: Deposition Cross Examining

Tobias A. Mattei, MD, is a academic Neurosurgeon specialized in Complex Spine / Deformity Surgery. Dr. Mattei is currently practices as an Assistant Professor of 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:

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)

• Appropriate Prosthetic / Orthotic Component Selection Recommendation
• Utilization and Failures Due to Improper Manufacturing Processes
• Prescription Appropriateness
• Clinical Applications and Negligence Directly Related to Limb Weakness and Loss
• Spinal Cord Injury and Treatment
• Wrongful Death Investigation and Determination
• Limb Damage and Loss in Diabetics as Related to Footwear
• LifeCare Plan Consultation and Preparation as Related to Orthotics and Prosthetics

• New York University Medical School Orthotics and Prosthetics Certificate Program, Certification as Certified Prosthetist, 1973
• Northwestern University Medical School Orthotics and Prosthetics Certificate Program, Certification as Certified Orthotist, 1973

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. 

Alan MacGill, DPM, FACFAS, CWS, is board certified by The American Board of Foot and Ankle Surgery in Foot Surgery as well as Reconstructive Rearfoot and Ankle Surgery and serves as one of their case reviewers. Dr. MacGill is also a Certified Wound Specialist (CWS) by The American Board of Wound Management. He is on the Board of Directors of the American College of Foot and Ankle Surgeons (ACFAS), a professional society of more than 8,000 foot and ankle surgeons.  He is a previous AO Fellow and a current faculty member of AO Trauma North America.

Dr. MacGill is on the Board of Trustees and serves as the Director of the Foot and Ankle Surgery residency program at HCA Florida Northwest Hospital in Margate, FL.  He participates in weekly didactic lectures, surgical grand rounds, journal club meetings, and cadaver lab workshops with the residents and students. He has also published several articles in peer-reviewed journals, given award-winning case presentations at state scientific meetings, presented numerous scientific research posters, and lectured at both state and national conferences.

Among his numerous achievements, Dr. MacGill was named one of the 2017 America’s Most Influential Podiatrists by Podiatry Management Magazine.  In 2020, Becker's ASC Review named him to their list of "38 Foot and Ankle Surgeons To Know".  Becker's Spine Review named him to their 2022 list of "10 Orthopedic Surgeons To Know".  

Litigation Support - Dr. MacGill provides expert witness services to attorneys representing both plaintiff and defendant. His services include medical record review, thorough reporting, depositions, and trial testimony as needed.

Areas of Expertise:

Elliott M. Stein, MD is a Geriatric Psychiatrist with over 45 years of experience caring for the elderly. Dr. Stein is Board Certified by the American Board of Psychiatry and Neurology in General Psychiatry (October, 1979) and Geriatric Psychiatry (April, 1991; Re-Certified, December, 2001, April, 2011, December 2022). He is licensed in California and Florida. Dr. Stein was the Director of Psychiatry at the Jewish Home of San Francisco from 2010-2020, and the Medical Director of their Geriatric Psychiatry Hospital. He has treated older individuals, typically people who have complex combination of psychiatric and medical problems. Dr. Stein has been a Member of the Task Force on Testamentary Capacity and Undue Influence, for the International PsychoGeriatric Association.

Dr. Stein is a Clinical Professor (Voluntary) in the Department of Psychiatry at the University of California, San Francisco, School of Medicine. He is a Distinguished Life Fellow of the American Psychiatric Association and a Distinguished Fellow of the American Association for Geriatric Psychiatry and a Life Member of the International PsychoGeriatric Association.

He is available to serve as an Expert Witness, do legal and forensic consultation, record review, and assessments concerning Psychiatric issues in Older Individuals. Dr. Stein offers his services to attorneys for both Plaintiff or Defense.

Areas of Expertise:

• Contested Wills and Trusts
• Testamentary Capacity, Undue Influence, Insane Delusions
• Financial Elder Abuse
• Geriatric Competence/Capacity
• Dementia and Delirium, Alzheimer’s Disease
• Geriatric Psychiatry Evaluation and Treatment, Psychiatric Medication, Psychotherapeutic Issues
• Depression and Anxiety Disorders
• Relationship Problems between the Elderly and their Adult Children
• Aging and Mental Disorders
• Geriatric Psychiatry issues in Hospitals, Nursing Homes, Memory Care, Independent and Assisted Living Facilities
• Medicare Psychiatric Services Coding and Documentation

View Dr. Stein's Consulting Profile.