Dr. Andrew C S Koh is a retired medical practitioner (cardiologist) who liveS in Ipoh, Perak, Malaysia. He studied Theology and graduated with Post Graduate Diploma in Theology from Laidlaw College, Auckland, New Zealand in 2009. He is currently a lay preacher who worshiped at St Andrew’s Presbyterian Church, Pengkalan, Ipoh, Perak, Malaysia. He is an author of several books.