The Mission Smile Comprehensive Cleft Care Centre in Guwahati is situated in Mahendra Mohan Choudhury Hospital. The state of the art facility was inaugurated by the Hon. Chief Minister of Assam, Shri. Tarun Gogoi in presence of Mr. Ratan Tata and immediate past chairman Mission Smile Shri. Ranjit Barthakur. The first Operation here was conducted on May 9, 2011. Since then more than 15,000 surgeries have been conducted by the centre. TCS also introduced the patient care system to accommodate and record the entire Patient Care journey by Mission Smile team for children needing cleft surgery from proper based files to paperless web based solution. APPL Foundation a Unit of Tata Enterprise also supported the Kolkata Mission conducted by Mission Smile in May 2015 by sponsoring surgeries of 10 children. Employees of APPL also volunteered in the Mission site and witnessed the transformation from Cleft to Smile.