@chantel SRTR stands for Scientific Registry of Transplant Recipients. They rate transplant hospitals.

Here is a link to the liver transplant hospitals.
https://www.srtr.org/transplant-centers/?organ=liver&recipientType=adult&query=
I think at this point you really want a hospital that is good after transplant. Those are the ones I would think would be most valuable to you since he is post-transplant.
JK