title: New venture pins its hopes on future of Medicare+Choice.
mesh_terms: D000368:Aged; D002204:Capitation Fee; D004469:Economics, Hospital; D006279:Health Maintenance Organizations / Q000191:economics / Q000458:organization & administration*; D006801:Humans; D020398:Medicare Part C / Q000458:organization & administration*; D010820:Physicians / Q000191:economics; D011647:Puerto Rico; D020414:Risk Sharing, Financial