The U.S. Department of Justice has intervened in a whistle-blower lawsuit alleging improper financial kickbacks were arranged between a hospital and large medical group in Ohio. The lawsuit alleges that Christ Hospital, a full service Cincinnati-based hospital and formerly a member of The Health Alliance, and Ohio Heart, the largest cardiology group in that region of the state, devised a scheme that provided cardiologists improper financial incentives in exchange for generating revenue for the hospital.