An unlikely coalition of doctors, dentists, hospitals, health plans and a health care union launched a statewide campaign Wednesday to support the successful rollout of federal health care reform and oppose further rate cuts in Medi-Cal, the government health care program for the poor. The “We Care California ” coalition came together at the State Capitol to announce support for Senate Bill 640 and Assembly Bill 900, which would reverse cuts to California ’s Medi-Cal rates, already the lowest in the nation.