Medical Specialists Expert Witnesses: 116

• 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

Dr. Jorge Perez, MD, is a Board-Certified Plastic Surgeon, practicing in Fort Lauderdale, Florida for over 30 years. A graduate and former faculty member of the Albert Einstein College of Medicine in New York City, he is selected regularly among Castle Connolly/U.S. News and World Report's listing of America’s Top Doctors.

Litigation Support - Dr. Perez is fluent in Spanish and has been retained as a consultant and medical expert for over 25 years. He has provided records review, examination and testimony in matters of adult and child plastic surgery, burns, scars, hand, skin and soft tissue injuries, for both plaintiff and defense. He assists attorneys in preparation for sentinel depositions and vigorous cross examination of opposing experts.

Areas of Expertise:

Dr. Perez is an author and has been featured as an expert in plastic surgery on worldwide media, including ABC, NBC, CBS, Univision, Telemundo and elsewhere. He has lectured and trained thousands of surgeons, in dozens of countries, in multiple languages, in the areas of facial rejuvenation, breast surgery, and body contouring.

He has served as a consultant to breast implant manufacturers Mentor/Johnson & Johnson and Allergan Medical, and has been an FDA principal investigator in breast, body contouring, liposuction and abdominoplasty. He was one of only 10 original investigators to develop Ultrasonic liposuction and was a participant in a national abdominoplasty study for Baxter bioscience. He was the keynote speaker on facial rejuvenation surgery at an international congress held in Brussels Belgium. Dr. Perez has served as plastic surgeon to a leading NYC Burn Center.

Dr. Perez recently gave a guest lecture entitled "How To Get The Most Out Of Your Retained Expert."

www.PerezPlasticSurgery.com. PerezPlasticSurgery@Gmail.com

CV available upon request.

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.

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.

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:

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 Chief Medical Officer 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:

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.

Sina Rajamand, DO, is a General Neurosurgeon particularly skilled in minimally invasive and Complex Spine Surgery, Including percutaneous lumbar fusions, and minimally invasive brain and spine surgeries. He is affiliated with numerous prestigious medical societies such as the American Association of Neurological Surgeons and the American Osteopathic Association.

Dr. Rajamand started Carson Tahoe Medical Center’s Neurosurgery program. His duties and responsibilities include writing and revising procedures and protocols, educating other providers and nursing staff on neuro-critical care and neurosurgical pathologies. He coordinating and organizes capital expenditures for the neurosurgery service line and provides continuous consulting services to inpatient hospitalist service and Emergency Departments.

Dr. Rajamand founded Battle Born Brain and Spine to set a new standard in neurosurgical care for the Northern Nevada and Northern California community, by providing the right care at the right time for the right person in the right way.

Dr. Sina Rajamand on Brain, Spine, and Back Surgery

Litigation Support - Dr. Rajamand is uniquely equipped to provide medical expert testimony with his advanced medical training from Columbia University, Midwestern University and the Michigan State University College of Human Medicine. He specializes in microsurgery techniques for neurosurgical procedures and minimally invasive surgery.

In depositions and trials, Dr. Rajamand can serve as a medical expert witness on a wide range of spinal conditions and diseases, including:

• Brain and Spine Tumors
• Carpal Tunnel
• Compression Fractures
• Trigeminal Neuralgia
• Lumbar, Cervical, and Thoracic Spine Conditions

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

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: