Dive Medicine Expert Witnesses

Hollywood , Florida

Otolaryngology, Otology - Neurotology, Skull base, Audiology, Hearing Loss, Vestibular, Vertigo, Facial nerve, deafness, Tinnitus, Facial plastics, Facial nerve, Rhinology, Laryngology, Sinus, Voice, Cochlear Implant, Acoustic trauma, facial trauma, dive medicine, diving injury

Dr. Ariel B. Grobman is a second-generation, board-certified otolaryngologist and head & neck surgeon with over a decade of active clinical and surgical experience in South Florida. He is a partner at South Florida ENT Associates, one of the nation’s largest private practice ENT groups, and serves on the Executive Board of Elevate ENT Partners. Dr. Grobman also serves as Medical Director of Baptist Health Plantation Surgery Center, where he was named Physician of the Year, as well as Medical Director of WellnessMD. Dr. Grobman maintains an active, high-volume clinical and surgical practice treating both adult and pediatric patients across a broad range of otolaryngologic conditions. His practice includes sinonasal disease, hearing loss, otology/neurotology, airway disorders, thyroid disease, head & neck pathology, and complex ear disease. He routinely performs advanced ENT surgical procedures and remains actively involved in contemporary standards of care and evolving surgical tech...

Ponte Vedra Beach, Florida

Emergency Medicine - Stroke, Heart Attack, Myocardial Infarction (MI), Sepsis, Appendicitis, Spinal Abscess, Pulmonary Embolism (PE), Aortic Dissection, Bougie, Ischemic Bowel, Subarachnoid Hemorrhage, Cauda Equina Syndrome, Pneumonia, Infections, Freestanding ER, Testicular Torsion, Hypothermia, Dive Medicine, Heat Stroke, High Altitude Illness

Board-certified Emergency Medicine Physician in full-time active clinical practice. Experienced expert witness at both deposition and trial, and has reviewed over 100 legal cases as a consulting expert. Clinical experience includes trauma centers, academic institutions, community settings, freestanding EDs, and rural hospitals. Experienced teacher of Emergency Medicine resident physicians. Co-inventor of a novel endotracheal device (RSI Prime, LLC; patent pending) that incorporates an adapted carbon dioxide detector with a modified bougie (an adjunct for difficult airways). Serves as an initial medical malpractice case reviewer for TeamHealth, the largest national physician staffing agency in the United States, since 2024. In early 2026, was named the case reviewer supervisor (Associate Director of Litigation Support), responsible for recruiting, hiring, and onboarding of case reviewers, as well as quality control of case reviews. Additionally, fellowship-trained by the Academy o...

Carpentersville , Illinois

Otolaryngology, Sleep Medicine - Allergy, Balloon ET procedures, Rhinology, Dive medicine , Hearing , Vertigo, Head & Neck Surgery, Laryngology, Thyroid, Rhinoplasty, Sinus Surgery, Balloon Sinus procedures

John T. McMahan, MD, FACS is a board-certified otolaryngologist with over 40 years of clinical and surgical experience. He completed fellowship training in Head and Neck Oncology and has extensive experience across the full spectrum of otolaryngology, including general ENT, rhinology, sinus disease, sleep-related procedures, and complex airway management. Dr. McMahan served on the faculty at Northwestern University and has held multiple clinical and leadership roles in both academic and private practice settings. His career includes comprehensive surgical care, perioperative management, and evaluation of complex diagnostic and treatment decisions in otolaryngology. He has over 20 years of experience as a medical-legal consultant and expert witness, providing services to both plaintiff and defense counsel. His work includes medical record review, case merit assessment, expert report preparation, deposition testimony, and trial consultation. Areas of expertise include standard of c...