Actor Kavi Kumar Azad , who played Dr Hathi in "Taarak Mehta Ka Ooltah Chashmah" , died on Monday after a "massive cardiac arrest" , says the show's creator Asit Kumarr Modi. Ravi Hirwani , centre head , Wockhardt Hospital told IANS that he was brought dead by his brother and a few more people to our hospital at 12.10 p.m. on Monday. He was 46 years old. Going by his history , he had respiratory problems.