I don't have anything against circumcision, but it should be done while the kid's an infant. It seems a little odd to try and force a 9 year old to undergo such a procedure against his will.
It seems odd to me for a doctor to cut off a normal healthy part of a boy's penis (at any age) when there is no medical condition present that requires surgery for treatment. If the surgery is not medically necessary, why should it ever be done to a child?
If it is done at all, it should only be done when the boy is old enough to get a tattoo or to get his penis pierced. In other words it should only be done when the boy is an adult and if he gives his own informed consent for his body to be permanently modified.