Under a healthcare program is called Medi-Share, Biblical Healthcare Solutions, a pastor's nod and a monthly fee provides nonsmoking, church-going Christians with paid medical bills. With 50,000 clients nationwide, the Melbourne-based organization is the biggest of at least three such groups that have grown in the wake of skyrocketing health insurance costs. But so far, these groups have operated with little oversight, and now the Florida Legislature is expected to consider whether Christian Care Ministry and other such religious groups should be exempt from oversight by Florida's Office of Insurance Regulation.