Opposition parties have criticised the Government for the "relentless upward surge" in hospital waiting list figures.
Figures from the National Treatment Purchase Fund (NTPF) for the end of August show 569,498 patients were waiting for a first hospital outpatient consultation.
The numbers are up 53,000 since the start of the year and more than 4,500 from last month.
Meanwhile, 68,390 patients were waiting for an appointment for their inpatient or day case treatment, and 22,544 patients were waiting to receive an appointment for their GI Endoscopy.
Fianna Fáil's health spokesperson Stephen Donnelly said every month so far this year has seen the outpatient waiting list hit a record high.
He argued: "In 2015, then Health Minister Leo Varadkar promised that Fine Gael would bring to zero the number of men, women and children waiting over a year and a half for an outpatient appointment by the end of June that year.
"When Minister Harris took office in 2016 the number stood at over 13,000.
"Today, in spite of the health budget growing by an unprecedented €3.5bn, the number is now more than 106,000 men, women and children."
He added: "For every one person waiting when Minister Harris took office, there are now seven people waiting over a year and a half."
Sinn Féin's Louise O'Reilly, meanwhile, said it's clear we don't have enough staff or capacity to tackle the increasing numbers.
Deputy O'Reilly argued: "Every single one of those figures represents somebody who is waiting, who is in pain, who is anxious, who is worried, who needs to see a doctor, who needs medical attention and cannot get that.
"I think that's the most tragic thing about these figures - the fact that people are actually waiting now longer to see their doctor."
