Actual pediatrician here.
Opposed to circumcision. I don't circumcise and tell my parents that up front. I also recommend against it. I don't present it as a "you might consider this option versus the next", I flat out discourage it.
Here's what to do to stop circumcision:
1. Get the government to stop paying for it.
2. Have more non-Jewish and non-evangelical members of the AAP reinforce a policy against it. Right now there is so much "muh religious heritage" that circumcision is still defended.
These two things will make the biggest change. Obviously, if there was a cultural incentive, that would be better. But I'm under no illusions that mothers will stop asking to cut their children.
Now, all of that being said, there *are* circumstances where circumcision is a valuable intervention (certain urogenital anomalies, grade III or greater hydronephrosis, etc). It is *not* valuable as a routine (do it to every baby boy) procedure.