Being a rare case of complications having to go through 3 surgeries of min 60 min each in one month at the age of 60 Dr Chang was able to stabilize and improve my condition and make me feel complete. As young a doctor he is he has shown me great compassion and wisdom .I feel truly blessed to have been in his care with all this he was the perfect Dr to have. His staff was always very cooperative and pleasant I SINCERELY THANK YOU, YOU ARE MY HERO !!!!!