@cares4him, Good Morning, and Welcome to Connect.
I have located the following links that will give you information about paired kidney donation at Mayo Clinic. You will see that Mayo operates in 3 states and they are able to work closely with each other to provide exceptionally good results with matching a recipient to the best matched donor kidney.
It sounds as if your partner is already listed for a kidney else where (?). Please know that you can contact Mayo by using the contact information that is included in the Kidney Transplant Program link.