Kaiser actually shut down their kidney transplant program in 2006 [1] after a number of problems came to light. The state regulator prepared a 50 page report on the matter [2]. Incidentally--and I have no personal experience with Kaiser or any other HMO and can't tell how close to reality this is--Kaiser (in California at least) does pretty well in government quality of care performance measurements and overall member ratings [3], and they are also Consumer Reports's top ranked California HMO.