Sunquest Information Systems, a clinical data management software provider, is now a privately-held corporation. The company was initially established when Vista Equity Partners acquired Diagnostics Systems from Misys Healthcare.

The Tuscon, Ariz.-based Sunquest reported it now owns all business assets, technology and products associated with the hospital systems diagnostic portfolio.

Richard Atkin, former president of the Hospital Systems Business Unit for Misys, has been named president and CEO of Sunquest.

The company said that day-to-day operations will continue with minimal impact, as it has been run largely as a stand-alone operation of Misys.