Ann Clwyd says there is a fear of speaking out when things go wrong in the Welsh NHS.
Speaking to an Assembly Committee, the Cynon Valley MP who reviewed the complaints system for the English NHS, says staff, patients and their families should feel free to complain without the fear of consequences.
Labour MP Ann Clwyd is to give evidence the Assembly health committee today, as part of a wider review of patients' complaints about Welsh hospitals.
The Cynon Valley MP complained about the conditions her late husband endured before he died at the University Hospital of Wales in Cardiff.
She went on to carry out a review of hospitals in England for the UK Government.
Previous attempts by opposition parties to invite Ms Clwyd to give evidence at the Senedd were blocked by Labour AMs. They said it was 'constitutionally inappropriate' to invite a backbench MP from Westminster.
The decision was later overturned.
The decision to invite Ann Clwyd MP to give evidence to the Assembly health committee has been welcomed by the Shadow Health Minister. The move had previously been blocked by Labour AMs although Ms Clwyd is Labour MP for the Cynon Valley.
The decision was taken at a private meeting of the health committee this morning. Plaid Cymru's health spokesperson, Elin Jones, made her third attempt to get the committee to agree to the invitation.
ITV News understands that on this occasion she warned that if there was no agreement she would take the issue to a full session of the Assembly, forcing a debate and a vote on instructing the committee to issue the invitation.
The Welsh Liberal Democrats have welcomed today's decision to ask Ann Clwyd to give evidence to the Assembly health committee. Two previous attempts to invite her had been blocked by Labour AMs.
The Cynon Valley MP received hundreds of letters about poor treatment in Welsh hospitals during her review of conditions in the English NHS.
She was invited to carry out the review in England after she complained about how her late husband was treated before his death at the University Hospital in Cardiff.
Plaid Cymru sources say the Assembly health committee has finally agreed to invite Ann Clwyd MP to give evidence about the treatment of patients in Welsh hospitals. The Cynon Valley MP complained about the conditions endured by her late husband before he died at the University Hospital in Cardiff.
She subsequently carried out a review of hospitals in England for the UK Government but previous attempts by opposition parties to invite Ms Clwyd to give evidence in Cardiff Bay were blocked by Labour AMs. They argued it was constitutionally inappropriate to invite a backbench MP from Westminster.
It's understood that today a proposal from Plaid Cymru's health spokesperson, Elin Jones, that Ann Clwyd is asked to evidence as part of a wider review of patients' complaints on July 10, was accepted at a private meeting of the committee.
Welsh Labour has responded to opposition criticism following a decision by Labour members of the Assembly's Health Committee to vote against inviting Ann Clwyd to give evidence. Labour committee member Leighton Andrews AM said,
The First Minister's direct criticism of Ann Clwyd is as extraordinary as her response. Two senior Welsh Labour politicians are now publicly at odds over something important to the party (the NHS) and extremely sensitive (a painful personal experience of the NHS.)
Both reasons are why Labour politicians have been treading carefully with regard to the Cynon Valley MP's comments. That's changed. Welsh ministers are fighting back against sustained Westminster criticism and they see Ann Clwyd's campaign as part of the attack to be countered.
The risk for the Welsh Government is that the public may see attacks from Jeremy Hunt and David Cameron as clearly political, but in Ann Clwyd many see someone who's speaking up for patients after a painful experience. If that's the case, the First Minister's criticism could look merely personal.
Cynon Valley MP Ann Clwyd has hit back following a public rebuke by the First Minister of her criticism of care in the Welsh NHS. The Labour MP, who's attending the Inter-Parliamentary Union Assembly in Switzerland has issued this statement.
The Welsh Conservative Leader says the First Minister should hold talks with NHS campaigner Ann Clwyd rather than criticising her. Carwyn Jones dismissed the call from Andrew RT Davies because he said Ms Clwyd had produced 'no evidence' to support her concerns.