Fianna Fáil has called on the Government to question the former Minister for Health, James Reilly's continued participation in Government.
Fianna Fáil's spokesperson for health, Billy Kelleher, said that there are serious questions to be answered by the Government over plans put forward by Minister Reilly to dismantle the health service.
It is understood that the former minister for health was warned by officials at his department that his plans were unworkable.
Fianna Fáil has said that these revelations raise some serious questions.
They argue that the Government's health policy agenda has been left in "tatters" as a result.
This evening a Government spokesperson said that Fianna Fáil has no credibility to speak about health reform after failing to deliver it when in Government.
The spokesperson added that Government has not abandoned its health reform agenda.
They said it was a matter for the Health Minister as to how it would be implemented.
Minister for Health Leo Varadkar has said that this is not the appropriate time to proceed with the dissolution of the Heath Service Executive.
The minister last month said that more work needs to be done of the new structures that would replace the HSE.
He said that the priority is to "bring stability to the service and get a reasonable budget in place."
Last night, Department of Health briefing documents for Minister for Health Leo Varadkar were published.
The documents were presented to him on his appointment.
He advised that the planned abolition of the Health Service Executive this year and related health reforms would be "unworkable".
It said that if policy documents were implemented in full, it would lead to a wide range of new statutory organisations.
Top officials advised that a more coherent approach is needed to the reform programme - which was heavily championed by former minister James Reilly.
A raft of new agencies had been envisaged including, a Healthcare Commissioning Agency, a Health Pricing Office, a Patient Safety Agency, Hospital Groups evolving into Trusts and new structures for primary, social and mental health care.
Legislation for the disestablishment of the HSE has completed all stages in the Oireachtas and the new arrangements were due to come into operation upon enactment.
The Department of Health is due to take back control of funding the HSE in January 2015.
Last month, having read the briefing material and hearing views of top officials, Mr Varadkar said he believed there should be a delay in abolishing the HSE to allow other reforms to bed down.