Dr. Mario Hemsley graduated Phi Beta Kappa and Magna Cum Laude from historically black Howard University. He attended medical school at the University of Southern California, and completed his pediatric specialty training at LAC/USC Medical center. He then directed the Pediatric Intensive Care Unit as faculty before completing a 30 year career at Kaiser Permanente Panorama City as a pediatric hospitalist. Dr. Hemsley is currently retired and continues as an online patient advocate and proponent of medical marijuana.