Hi there,
When I was looking for a ped earlier this year, my friends recommended their doctor (who is in Markham). His name is Dr Kevin Lee. They seem to like him a lot. He wasn't taking patients at the time but the office asked me to call back in a few months. I ended up finding one in RH closer to home so I didn't bother. You could give him a try. His number is 905-305-1700.
A good website to visit that will at least give you names and numbers is ratemds.com. Rate MDs have people commenting on different doctors. Keep in mind, each comment is based on someone's personal experience and should be taken with a grain of salt. But the overall comments can also help you make a decision on who to call.