Born in Peru, Dr. Mark studied medicine at Universidad Peruana Cayetano Heredia. He trained in Pediatrics at North Carolina Moses Cone Hospital, University of North Carolina. Since 1989, he has been practicing pediatric medicine at Rub Pediatrics MD PA. He is a fellow of the American Academy of Pediatrics and is Board Certified. Dr. Mark is also former Chief of Staff and former Chief of the Dept. of Pediatrics of North Shore Hospital. Dr. Mark and his wife Eva have 3 children. During his spare time, Dr. Mark enjoys windsurfing, soccer, and walking.