There is another reason also. No one that has any sense wants to do a Residency in a place like NEWARK.
It serves a population ranging from bankers and professional athletes to heroin addicts and alcoholics on welfare, as well as a prison population (Northern State) and everyone in between. The people in the area come from all over the world, and the hospital also treats patients brought in from Newark - Liberty airport, a huge port of entry. It’s also a teaching hospital at an accredited university.
Newark might suck. Okay, it does suck. I should know, I worked there, but if you ever need a good doctor, you’d do well with one who did his rotations there.