The Obstetrician and Gynecologist in Columbia Asia that I see is Dr Teh Jin Teik. He's the most popular Obstetrician in the hospital and is always busy. For Saturday's appointment, we would usually arrive at 7.45 am (or before) to queue for registration and return to hospital at around 10.30 - 11 am for our consultation. There's no appointment system in the hospital, you have to register and queue. Dr Teh has been very wonderful, friendly & soft spoken and very patient. He did my C-section surgery successfully and even removed an inflamed appendix in the process. If I have any emergency questions, I could sms and he would reply :) He also answered our questions on our baby even though he's not a pediatrician.