As a medical expert witness in cardiology, Dr. Marmur supports legal counsel in selected cases. He provides objective opinions and testimony based on his experience as a high volume practitioner of percutaneous coronary intervention and as an internationally recognized expert in atherosclerosis and blood clotting.

His expert witness services support the medicolegal process in all its phases, including evaluating whether the standard of care was met or breached, testifying in court, or assessing damages based on causation and presumed longevity.

Recognized by professional colleagues as an expert in his field, Dr. Marmur is a frequently invited speaker at national and international conferences. He has served on the editorial boards of the Journal of the American College of Cardiology, and Cardiovascular Revascularization Medicine.