He became a Member of Legislative Assembly in 2011 after contesting in the Tamil Nadu legislative assembly election as a Desiya Murpokku Dravida Kazhagam candidate for the constituency of Peravurani. He is alleged as one of the politicians in Tamil Nadu supporting the Liberation Tigers of Tamil Eelam.
He is son of retired Lt.Col. D.P. Chellaiah and resides in Chennai. He has three daughters, named Kavitha Pandian, Kirana Pandian, and Keerthi Pandian. He holds a Bachelors in economics from Madras University.