Medical Specialists Expert Witnesses: 112

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:

Dr. Richard K. Skala, DC, QME, has been a Doctor of Chiropractic since 1976, providing chiropractic manipulation and spinal manipulation, as well as related physiotherapy. Certified in Manipulation Under Anesthesia (MUA), he has been granted Hospital / Surgery Center privileges for MUA and has performed hundreds of MUA cases. He was one of the first chiropractors in California to train for and provide Extracorporeal Shockwave Treatments (EWST). He has post graduate certification in the performance and interpretation of neuro-electrodiagnostics. Consultation and Expert Witness Services for Attorneys regarding

• Personal Injury
• Industrial Medical-Legal Cases
• Standard of Care involving General Chiropractic, Manipulation Under Anesthesia (MUA), Non-Surgical Spinal Decompression, and Extracorporeal Shockwave (EWST)
• Chiropractic Licensure Compliance California
• Workers Compensation

One of the foremost experts in Workers’ Compensation in California, he has taught many doctors on the subject and testified at numerous WCAB trials and hearings. He has been declared an expert witness by the California Workers’ Compensation Appeals Board. He has been a Qualified Medical Evaluator since 1992, an Independent Disability Evaluator since 1992, a certified AMA Impairment rater since 2003, a Fellow of the Academy of Chiropractic Forensic Consultants (AFICC) since 2003, and a consultant to the California Board of Chiropractic Examiners since 2008.

Dr. Skala is a noted author in his field of expertise. He has written numerous published newsletter articles on Chiropractic and other topics related to that field.

Shishir V. Shah, DO, is an award-winning Wound Care Physician in active clinical practice. Dr. Shah has 20 years of wound care clinical, safety, and leadership experience in acute care, skilled nursing, rehabilitation, and home health settings. A Certified Wound Specialist (CWS) with additional Board Certifications in Hyperbaric Medicine and Family Practice.

Dr. Shah is a National Key opinion leader, CMO for 9 outpatient wound clinics, and experienced as a Medical Director at several level 1 Hospital Programs. Dr. Shah is on faculty at Midwestern University Medical School where he trains students on skin and soft tissue procedures. He has significant private equity, medical device, startup, and consulting experience (with biomedical, consumer products, and device-related wounds.) He earned his undergraduate degree in Aeronautical Engineering from Rensselaer Polytechnic Institute.

Litigation Support - Dr. Shah serves as a Hyperbaric Medicine / Wound Care Causation expert witness, with deposition and trial experience. His nationwide services are available to defense attorneys, device companies, physicians hospitals, skilled nursing facilities, and for consumer product liability. Dr. Shah is timely, professional, articulate, and accessible.

Areas of Expertise:

• 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

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)

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:

• 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

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.

COMPANY DESCRIPTION:

• Expert Witness - Medical malpractice, misadministration, medical event (Radiation Oncology, Radiology, Nuclear Medicine)
• Expert Witness - Radiation exposure, radiation dose, radioactivity and radiobiological calculations
• Expert Witness – Patent infringement (intellectual property all categories)
• Expert Witness – Medical physics, supervision of (medical physicist, dosimetrist, radiation therapist, radiologic technologist)
• Expert Witness - Termination of employment

Michael S. Gossman, M.S., DABR, FAAPM, is a Board Certified Qualified Expert Medical Physicist, an honorary Fellow of the American Association of Physicists in Medicine (AAPM), and the Chief Medical Physicist & Radiation Safety Officer (RSO) in Radiation Oncology at a clinic in Indiana. Chief Gossman is directly and ultimately responsible for all technical and scientific aspects of cancer treatment. He directly supervises and oversees efforts from staff medical physicists, dosimetrists, radiation therapists and x-ray technologists.

Chief Gossman is the highest-ranking scientist in medicine and has been in the field for 24 years. Chief Gossman's expertise involves the safe, effective and precise delivery of radiation to achieve the therapeutic result prescribed in patient care by radiation oncologists striving to treat cancer patients with particle accelerators and radioactive material. 

Extra-professionally, Chief Gossman is retired as the Interim Editor-in-Chief and Editorial Board Member for the Medical Dosimetry Journal, Editorial Board Member for the Journal of Applied Clinical Medical Physics, served four years as a Medical Consultant to the U.S. Nuclear Regulatory Commission and was a veteran Accreditation Site Reviewer for both the American College of Radiology (ACR) and the American College of Radiation Oncology (ACRO). He was a 2-term Ohio River Valley Chapter President of the AAPM, and was also formerly a Graduate School Professor of Clinical Medical Physics at Wright State University.

As an expert in radiation safety, dosimetry, detector measurements, particle accelerator and radioactive material calibrations, and radioactive material handling, Chief Gossman is a highly respected medical physicist by medical physicists nationally. He is also the owner of Regulation Directive Medical Physics, which he created as a consulting company, providing services for medical physics, dosimetry, medical device testing, and expert witness efforts.

Services Provided:

• Medical expert witness
• Medical consultant
• Legal consultant
• Review of: medical event, malpractice, and misadministration
• Regulatory compliance
• Investigation and audits
• Independent medical evaluation of the probable deterministic effects of radiation exposures
• Facility practice vs. standards review
• Accreditation preparation
• Shielding calculations
• Accelerator acceptance testing & commissioning
• Quality assurance
• Peer review of the Chief Medical Physicist
• Radiation measurements
• Radiation calculations
• Radiation safety
• Dose determination
• Dosimetry
• Calibration of medical accelerators
• Treatment planning
• Calculation of time and dose for treatment
• Handling, shipping, receiving, and storing radioactive material
• Calibrating radioactive material
• Regulatory compliance
• Interpretation of bioassay results and other data related to radiation exposure
• Calculation of internal and external radiation doses, as necessary

Dr. Pia Quimson-Guevarra is Board-Certified in Psychiatry and Forensic Psychiatry by the American Board of Psychiatry and Neurology. She opines about psychiatric issues in civil litigation, employment matters, and criminal cases. She has extensive experience with diagnosis and treatment of depression, anxiety, bipolar disorder, PTSD and other factors of emotional distress, both as a treating physician and in medical-legal cases. She serves as a forensic consultant, and/or disclosed Expert Witness. She assesses competency and undue influence,  standard of care, and mental status re judgment and clarity of thinking. Applies to civil, probate and CTST criminal matters including criminal responsibility. She is also experienced in treatment of psychotic disorders,  hallucinations, and delusions.

She opines about medication or drug impact on behavior.

Dr. Quimson-Guevarra conducts IMEs and review of medical and legal records. Her assessments are thorough and inform thoughtful and objective expert opinions issued by verbal and written report and testimony. She conducts Independent Medical Evaluations face-to-face in person and by video.

She is a Certified Forensic Evaluator in Oregon.

Dr. Quimson-Guevarra's clinical practice in Portland is Quimson Behavioral Health, providing psychiatric patient care, medication management, and psychotherapy, for patients who suffer from mental disorders, e.g., Anxiety, Depression, Bipolar Disord & PTSD and medication management. She continues to use her expertise in psychopharmacology to treat mental health conditions in the context of medicolegal medically complex cases.

Prior to expanding her private practice, she was a psychiatrist at Cascadia Behavioral Healthcare, in an Assertive Community Treatment (ACT) team, a method to deliver an intensive level of services to patients in the local community. Her patients consisted of individuals who suffer from severe and persistent mental illness.  At Cascadia, she also treated patients with a history that includes forensic medical-legal issues.

Previously, Dr. Quimson-Guevarra treated patients who suffered from anxiety, mood, and psychotic disorders at Cedar Hills Hospital, Multnomah County Detention Center, Washington County Jail, Snake River Correctional Institute, and the Portland Veteran's Administration. 

Dr. Quimson-Guevarra has served as a forensic consultant for the Washington County Mental Health Court in Oregon. She also has worked in the forensic evaluation service department at the Oregon State Hospital where she performed forensic evaluations.

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:

Thomas J. Zaydon, MD, FACS,  is a Board Certified Plastic Surgeon with over 30 years of experience.. Dr. Zaydon is the founder of The Cosmetic Surgery Institute of Miami and is a recognized authority on Plastic and Reconstructive and Burn Surgery. During his tenure, he has worked in the medical field in the emergency room, providing surgical procedures and performing surgery on patients who need long term or short-term 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 is a noted author of 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. Working in the emergency room at major hospitals has given him opportunities to work with all types of injuries from major reconstruction to minor revisions. He can provide factual synthesis of any issue regarding the medical care or not appropriate medical care rendered. He navigates medical records and understands procedural terminology and insight with professionals, physician assistants, nurse practitioners, as well as physician practices and attorneys.

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

Areas of Expertise:

Dr. Andreas Plackis is an award-winning, triple board-certified Anesthesiologist and Cardiac Anesthesiologist. He is Vanderbilt residency and cardiothoracic anesthesiology fellowship trained, and in full-time clinical practice with hands-on patient care and supervision of CRNAs and SRNAs.

Dr. Plackis provides care for the highest acuity patients practicing at the only heart transplant center in Arkansas. One of a select few Arkansas anesthesiologists providing TEE imaging guidance for structural heart interventions.

Litigation Support - Dr. Plackis will assist either plaintiff or defense attorneys in establishing standard of care compliance and identifying breaches in anesthesiology medical malpractice cases. His services include written reports, deposition testimony, and trial testimony as needed. He is highly responsive to phone calls and emails. Two-week or less turnaround time for initial case opinion.

Areas of Expertise:

Dr. Plackis is an experienced and articulate public speaker and presenter with multiple publications and local/national presentations. He has exemplary knowledge base as achieved a Top 1-3 percentile ranking nationally compared to peers in nearly all ABA licensing and training examinations. Diplomat of the ABA and NBE.

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.