The new ambulatory service center payment system kicks off as changes to the hospital outpatient payment system (OPPS) for calendar year 2008 occur. Find out what January 1 will bring for ASCs and what CMS is proposing for hospitals in the ASC payment final rule and the CY2008 proposed rule for OPPS. Physicians will be affected, too, as CMS projects services will "migrate" from hospital outpatient departments and physician offices to ASCs. Prepare your organization now for the changes.