If the guy was in a solo private practice, the odds are that another doctor wouldn't find out about it until there were complaints to the AMA or police (there weren't), or if the same doctor heard the same stories from more than one former patient of Enema-man. And given that he preyed on people at the low end of the social scale (and probably he tried to find victims with very passive parents), it's unlikely that they'd have said much to a different doctor.
Bingo! They cover for eachother. I've watched it for years and years. Nobody in the profession wants to stick his neck out, even though they are all legally required to report suspected abuse. Those who look the other way are, IMO, even worse than the perpetrator himself -- they constitute the only safeguard against this kind of thing and they have shamelessly shirked their legal and ethical responsibility consistently.
Before selecting a pediatrician, investigate him thoroughly. Criminal record? Record of complaints to state medical board? Frequents homosexual bars or belongs to homosexual organizations?
Never let your child be interviewed, examined or treated unless you are personally present every second.
Always get a second opinion before permitting the pediatrician to prescribe or treat your child in any non-routine manner. Do not tell the consulting physician that the child has already been seen and diagnosed or that a treatment has been suggested. Know exactly what periodic routine visits should consist of, as well as what vaccinations, etc. are standard practice. Question anything that deviates from this.
Let your child know that he/she can change pediatricians any time he/she wants and the reason won't matter.
And lastly, never select a pediatrician who is a member of the AAP. They do mass mailings to promote boundary violations by their membership, such as interrogating your youngster about firearms in your home.
It's a shame that it's come to this, but medicine has had its chance to police its own ranks and has obviously failed to do so.