Drug discount managers, switches, pharmacy services administrative organizations, third-party vendors: Those are new types of companies that could elbow their way into the new system that would be created by drug-rebate reforms. HHS proposed to either eliminate rebates or allow them only if they are shared with consumers. For that new system to work, an overhaul of the current system would be needed so that discounts and point-of-sale rebates could be accurately calculated when consumers buy drugs, according to participants...