Dr. Kam Cheung may be a knowledgeable, skillful physician, but it does not come off that way during my visits. I know it's probably a lot to ask of physicians nowadays to actually give us patients the time and attention we paid for, so the least I'm asking for is for them to at least try to be friendly and not to ever be hostile towards them. Yeah, I had a less than pleasant experience a few years ago when I went there for a chronic fatigue problem I was suffering from at the time. I was explaining my problem to him and how often it occurred but he didn't believe that I was even suffering any kind of problem at all and brushed it off. Then he started getting frustrated and losing his patience when I insisted that I was indeed I was feeling this way almost all the time; he didn't believe that it was possible. I don't believe any doctor should feel they have the right to make a patient feel this way, especially one who charges the way he does. That's my opinion.