More than 30 cases had been uncovered in which patients were falsely labeled as needing dialysis in order to improve their chances of receiving a new organ quickly, according to health officials.
The director of the transplantation centre and two head doctors were immediately suspended.
Several incidents of manipulation of organ donor lists in Germany have been uncovered in recent months.
A head doctor working in the northern city of Göttingen is under investigation after he was accused of systematically changing the medical records of his patients to make them appear sicker than they were – in order to bump them up the transplant waiting list.
It is thought at least 25 patients were pushed up the list unfairly – leaving others in need to wait for longer, and potentially dying while they waited. Another investigation was started in October after similar suspicions emerged at a Munich hospital.