Christopher Rochester, 24, died after falling from a hotel balcony in 2000.
His family are pursuing a private prosecution against the doctors, who were convicted of manslaughter by neglect, but cleared on appeal.
Mr Rochester, of Chester-le-Street, died of internal bleeding at Rhodes' Andreas Papandreou Hospital after falling from the balcony in Faliraki.
He had been left on a hospital trolley for three hours following the fall, and his kidney was also missing when his body was returned to Britain.
Doctors Stergios Pavlidis, Georgos Karavolias and Mihalis Sokorelos were sentenced to three years in jail but were cleared in 2005.
He said: "Christopher's family have fought for seven years and we won't rest until we get justice for his death.
"We're about £8,000 short of our target, and just awaiting a trial date when we can return to Greece."
clipped from: news.bbc.co.uk 