yea he is in the sitcom but not much screen time Nathan Ngai http://artiste.tvb.com/index.php?m=guest&u=Dreamnathan
Spoiler: Spoiler Sad scene ;(. At least he was able to help one more person before he really passed away. But what did i say. I told you that there will be a scene about someone going like "i'm not qualified to be a doctor: