I completed my training in General Surgery in 1981 and Colorectal Surgery in 1983 in the Philippine General Hospital. Then I joined the Faculty of the UP College of Medicine, UP Manila in 1984. I am a Diplomate of both the Philippine Board of Surgery and the Philippine Board of Colon & Rectal Surgery. I am a Fellow of both the Philippine College of Surgeons and the Philippine Society of Colon & Rectal Surgeons. I also became the President of both organizations in 2001 and 1997, respectively. Since 1983, I practiced General & Colorectal Surgery in PGH and Manila Doctors Hospital. I retired from UP Manila in 2015. Now, I practiced only in Manila Doctors Hospital, where I am the Chairman of its Department of Surgery in 2016-2021.