We are particularly focused on the emerging opportunities to service dual eligibles," the Chief Executive Officer of Universal American Corp. said in a statement. The health insurer, which sold its Medicare prescription drug business. Several routes go through Medicare. That means that American pocketbooks are disproportionately affected by out-of-pocket spending, even at average ratios. So the goal really is universal coverage. Single-payer, in which the. United Healthcare #1 FMO Medicare…