Pediatricians in tortonto/GTA?

That's because you've never seen what some of those diseases the vaccines prevent can do.

My spouse had polio. I know a young man who is fully deaf because his mother had measles during pregnancy.

Why anyone would choose to risk that when the alleged risks of vaccines have been disproven repeatedly, to the satisfaction of doctors, is beyond me.

I WANT doctors to bother parents about vaccines.

I don't think you're going to find one, not an actual doctor with a medical degree. When it comes to protecting someone from all the things vaccines protect against, there really isn't any way except to isolate a person from other people for a good deal of their life. If there was another way that actually worked, don't you think almost everyone would use it? Vaccination has all but eliminated diseases that most children used to get routinely, diseases that didn't harm most children but left some dead, disfigured or damaged in some way. Vaccines may have side effects, but so did the diseases. Did you have measles, mumps and chicken pox as a child? I did, and so did every kid I knew. There were no vaccines for those when I was a kid. I'm in an age group in which polio is almost unknown, because the vaccine came out when we were very young. People a few years older did get it. Everyone my father's age knew someone who had it. Look up what those can do to people, and maybe vaccines will look better.

I have a family doctor that has a medical degree, it's posted in her office. But the clinic she works for is closed, as are pretty much all of them due to the pandemic. 
You're going to have to call up a few doctors or maybe try naturopathic doctors before you find some one that's willing to help you. 
Would you rather have your child have a few side affects, or would you rather have them suffer from a disease or side affects from that disease, that could have been prevented.... Also your child won't be able to go to school, with out proof of being vaccinated. 

I'm sorry what area were you looking for? I dont think you mentioned