Diagnostic Errors Expert Witnesses

Los Angeles, California

Cardiothoracic Surgery, Cardiovascular Disease - Standard of Care, Adverse Outcomes, Traumatic Injury, Personal Injury, Complications, Informed Consent, Device-Related Injury, Diagnostic Errors, Myocardial Infarctions, Medication Errors, Post-Surgical Issues, Coronary Artery Bypass Grafting, Valve Surgery, Aortic Aneurysm, Infections, Angioplasty

Dr. Raymond H. Chen, MD, DPhil, is a distinguished senior cardiac surgeon with the Southern California Permanente Medical Group (SCPMG), where he has been serving since 2004. Currently, he holds the position of Chief of the Regional Department of Cardiac Surgery. Dr. Chen earned his BA in Biochemical Sciences from Harvard University, followed by his MD from Stanford University, and a DPhil in Immunology from Oxford University. His extensive training includes a residency in General Surgery and a Residency in Cardiothoracic Surgery at Brigham & Women’s Hospital, affiliated with Harvard Medical School where he served as chief resident in both specialties. Dr. Chen's clinical practice focuses on adult cardiac surgery, and he is certified by the Thoracic Surgery Board. He has performed over 3000 heart operations in the last 20 years. Throughout his career, Dr. Chen has been actively involved in clinical teaching, training medical students, physician assistants, and new cardiac surgeon...

Durham, North Carolina

Emergency Medicine, Education & Schools - emergency medicine, trauma, toxicology, airway, cardiac arrest, simulation, medical education, artificial intelligence, strangulation injuries, intimate partner violence, medical errors, resuscitation, clinical education, diagnostic errors, resident supervision, standard of care, acute care, patient safety

Dr. Christopher J. Nash, MD, EdM, is a board-certified emergency medicine physician and Assistant Professor of Emergency Medicine at Duke University School of Medicine. He currently serves as the Simulation Director for the Duke Emergency Medicine residency program, where he designs and leads advanced training in resuscitation, airway management, trauma, and acute care. Dr. Nash brings nearly a decade of frontline emergency medicine experience, including residency and faculty practice at Massachusetts General Hospital, Brigham and Women’s Hospital, and Duke University Hospital. He has managed thousands of high-acuity emergency cases, including trauma, toxicology, cardiac arrest, sepsis, and airway emergencies. His expertise extends to standard of care in the emergency department, decision-making under pressure, and supervision of resident physicians in complex cases. In addition to his clinical practice, Dr. Nash is nationally recognized for his work in medical education and simul...

Hudson, Ohio

Emergency Medicine, Physician Assistant - Emergency Medicine PA, Physician Assistant, Advanced Practice Provider Standard of Care, Missed Stroke, Medical Malpractice, Failure to Recognize Sepsis, Triage Errors, Failure to Admit, Diagnostic Errors, Improper Discharge, Missed Pulmonary Embolism, Missed MI, Scope of Practice, Failure to Diagnose, Trauma Evaluation

I am a Physician Assistant specializing in emergency medicine and urgent care, with extensive experience in chart review and standard-of-care analysis for hospital quality and risk management. I provide medical-legal consultation and expert opinion for cases involving diagnostic errors, failures to diagnose, missed myocardial infarction or stroke, sepsis, improper discharge, and other ED or urgent care standard-of-care matters. I have practiced across multiple hospital and urgent care locations, including University Hospitals (Bedford Heights, Richmond Heights, Geauga, Portage, Twinsburg) and Cleveland Clinic (Mayfield Heights, Garfield Heights, Euclid, Warrensville Heights), gaining experience in diverse patient populations and high-acuity settings. My clinical expertise includes acute care, triage, diagnostic evaluation, emergency procedures, and patient management. I hold a Master of Science in Physician Assistant Studies, a Master of Health Sciences, and a Bachelor’s degree fr...

Austin, Texas

Emergency Medicine, Ultrasound - Chest Pain, ER Standard of Care, Causation, Freestanding ER, Emergency Department Operations, Acute Injury, Motor Vehicle Collisions, Falls and Trauma, Diagnostic Errors, Treatment Delays, Triage, Documentation, Imaging Appropriateness, Medication Errors, Risk Stratification, Personal Injury Medicine, Stroke and Neurologic

Location: Austin, Texas Licensed In: Texas (available for nationwide case review) Profile Summary: Board-certified Emergency Medicine physician actively practicing in high-acuity emergency settings, including freestanding and hospital-based EDs. Experienced in trauma, cardiac emergencies, stroke, toxicology, and acute injury evaluation. Provides clear, well-supported opinions on standards of care, causation, and emergency department operations. Expert Witness Services: • Standard of care reviews • Causation analysis • Emergency department operations, protocols, and triage • Freestanding ER workflow, documentation, and billing practices • Diagnostic error and treatment delays • Personal injury: motor-vehicle collisions, falls, workplace injuries • Medication management and decision-making analysis • Affidavits, written reports, deposition, and trial testimony • Independent Medical Examinations (IMEs) Case Types Handled: • Emergency department management of acute conditions • Timin...