To add to the information given above:
The preputial space, the space between the prepuce (foreskin) and glans (head of the penis) that develops as a boy becomes retractable, secretes lysozyme, a beneficial enzyme that is anti-bacterial.
Also, urine is sterile when it leaves the body. In fact, the advice given to intact soldiers in the field when baths aren't readily available is to pee while holding the foreskin closed, to swish the pee around inside the preputial space and wash everything out.
It is not necessary to retract and wash the head of the penis regularly for fear of infection developing, any more than it is necessary to wash the inside of your vagina. The intact penis is basically self-cleaning.
So there's just really no emergency in terms of "we must get in there to clean or he's going to get repeated infections."
Also, your doctor is misinformed in stating that circumcision is the "cure" for phimosis. That's like saying we should cut a girl's labia off if they become fused (which is a very common problem). There are many, many steps far short of foreskin amputation that can solve the phimosis issue (if there is in fact "true" phimosis which I, too, very much doubt).
Steroid creams could be applied to the foreskin to hasten the loosening process so that it retracts more easily.
Stretching exercises could be done -- although I would be very reluctant to do those myself as a parent, I believe it would be better than forcing my son to suffer an unnecessary circumcision.
At the absolute most, a dorsal slit could be made in the foreskin which would preserve most of its functionality.
But again, I have to say, in agreement with the above posters -- circumcision is absolutely not the answer. EVEN IF your son were undergoing repeat UTIs (which is apparently not the case). Circumcision is no more an appropriate treatment for boys than it is for girls suffering similar ailments, because the foreskin is not disposable.
I hope you can find some answers, and I also hope you will be open to questioning your doctor more, because despite the fact that you live in Canada, he has absolutely given you misinformation.
A good source for good information is
www.cirp.org, which is full of medical journal articles on the foreskin and circumcision.
You should especially read through this page on phimosis:
http://www.cirp.org/library/treatment/phimosis/