We just know we are in for some large scale impacts rather than the comparatively smaller implementations we have seen so far (Cherokee Health Systems, the Geisinger Health Plan/System, Group Health of Puget Sound
, the Diamond Project in Minnesota).
Kaiser Permanente, some of the Minneapolis plans, Group Health of Puget Sound
, Harvard Pilgrim Health Plan have spent some money on generating evidence, but I think most of them are focusing on using the syntheses and the reports that have been done.
Early advocates of prepaid health systems pointed to well-established and effective not-for-profit health plans, including Group Health of Puget Sound
and Kaiser of California.