Rex Features
The 56-year-old actor, who played Jason Gideon on Minds before abruptly departing in 2007, will reportedly guest star in an upcoming episode of CBS's transplant drama.
Patinkin's previous credits include Dead Like Me and Chicago Hope.
Rivers, which tells the story of organ transplants from three perspectives - the donors, the recipients and the doctors - recently made a slow start in the ratings for CBS.
