SA's corruption watchdog claims Premier Steven Marshall privately rebuked him for releasing a report into potential health department corruption, despite Mr Marshall telling Parliament he found the report "extraordinarily helpful".

Key points: An ICAC report found SA Health was at risk of corruption, misconduct and maladministration

An ICAC report found SA Health was at risk of corruption, misconduct and maladministration Publicly, Premier Steven Marshall said he found the report "extraordinarily helpful"

Publicly, Premier Steven Marshall said he found the report "extraordinarily helpful" But the ICAC says privately the Premier expressed "dissatisfaction" at the report's release

Independent Commissioner Against Corruption Bruce Lander said while Mr Marshall was publicly praising his report into SA Health, he "forcefully" labelled it as inflammatory in a private meeting.

Mr Lander delivered a report to the State Government last week outlining his concerns that SA Health was at risk of corruption, misconduct and maladministration.

The following day, Mr Marshall said he found the document to be "extraordinarily helpful".

However, Mr Lander said during a private meeting on Friday, the Premier "forcefully" expressed "dissatisfaction" at the report's release.

"I've spoken to the Premier … he said publicly that he's found the report very useful, very helpful, but that wasn't what he conveyed to me though," Mr Lander told ABC Radio Adelaide.

"He said that the report had put back the chances of correcting the problems in health … I think he meant that the report was inflammatory.

"I defended myself, I said that the public had a right to know about this, that the public should know that a person in my position had reached a state of frustration in relation to an agency that had a budget of an excess of $6 billion and that there was significant waste.

"The impression he gave me is he didn't think it was helpful."

When asked if the Premier was angry during the exchange, the commissioner simply replied "yes".

Mr Marshall said he and the commissioner regularly spoke and the State Government appreciated his input.

"I'm not going to go through the details of that conversation, but I'm very happy to stand by all my public and private statements that I have made," he said.

"We welcome the report coming to the Parliament but there have been some aspects which I think have been quite demoralising on the workforce."

SA Health's poor reporting makes corruption 'easier'

Last week, Mr Lander said he wrote the report when an investigation into the conduct of an SA Health employee stalled because of poor record keeping.

His report outlined cultural issues, poor record management, bullying and harassment, conflicts of interest and mismanaged procurement practices.

Peter Malinauskas has questioned how the Premier can be trusted following Mr Lander's comments. ( ABC News: Lincoln Rothall )

"These are learnings I have obtained over the last six or more years in investigations I've carried out into corruption in SA Health," he said this morning.

"The poor documentation within SA Health makes it very difficult to establish corruption and it makes it easy to engage in corruption."

On the same day the report was released, the State Government announced a new taskforce would be deployed to crack down on corruption within SA Health.

Mr Lander has asked the State Government for $2 million to conduct a full evaluation of SA Health's practices, a request that has been rejected.

Number of complaints on the rise

In a document released today, the ICAC said almost 30 per cent of the complaints and reports it had received since July 1 were related to the health department.

Mr Lander said SA Health had been generating an increasing proportion of complaints since it was established.

Since July 1, 169 complaints and reports have been made regarding SA Health.

In 2013–14, SA Health represented 13.8 per cent of the Commissioner's work.

Earlier this month, Mr Lander said 18 per cent of complaints not about SA Police were about SA Health.

Complaints against SA Health have been on the rise. ( ICAC )

'Devastating blow' to Premier's credibility

Opposition Leader Peter Malinauskas said the incident had brought Mr Marshall's integrity into question.

"This morning we have seen the ICAC … deliver a devastating blow to the credibility of Steven Marshall," he said.

"If we can't trust the Premier on this, how can we trust the Premier on anything at all?

"It's extraordinary to have the Premier of the state receiving the report from the ICAC, then failing to read it, then having been embarrassed into reading it, then trying to essentially dress down the ICAC commissioner for having written it in the first place."

SA Best MLC Connie Bonaros said the Premier had been "two-faced" and she had lost confidence in him.

"It is absolutely Steven Marshall's biggest and most scandalous situation in office," she said.

"I think we are all going to have to ask ourselves some very serious questions about what the fallout will be from here."