Dr. Mark Barr, MD, is a seasoned healthcare provider in Los Angeles, CA, with over 42 years of experience specializing in cardiology, critical care medicine, internal medicine, anesthesiology, and cardiovascular disease. He earned his medical degree from the City University of New York School of Medicine in 1981 and completed residencies at prestigious institutions such as New York Presbyterian Hospital. Dr. Barr is affiliated with Keck Hospital of USC and Keck Medical Center of USC....