On 7 March 2007 Pope Benedict XVI appointed him as bishop of Nakhon Sawan, which had been vacant since 2005, when his predecessor Louis Chamniern Santisukniram was made Archbishop of Thare and Nonseng.
Pada 7 Maret 2007, Paus Benediktus XVI melantiknya sebagai uskup Nakhon Sawan, yang telah lowong sejak 2005, ketika pendahulunya Louis Chamniern Santisukniram menjadi Uskup Agung Thare dan Nonseng.