Sefton Central Labour MP Bill Esterson said he was concerned at news that ambulances had to be turned away from Aintree hospital.
It has been revealed that Aintree Hospital was the second hospital within the same week to resort to diverting ambulances to other hospitals because their A&E was struggling to cope.
Ambulances were diverted from the hospital in the early hours of Thursday (May 30).
The Royal Liverpool took the same action two days earlier.
Bill Esterson said the Government "must now realise that A&Es are in crisis".
Bill said: "I have been warning for months now that there is an issue that needs to be addressed immediately. Staff have told me how much pressure they are under, something they showed me when I visited recently. Staff at A&E are clearly working flat out but cuts elsewhere in the NHS and in council social services are causing a crisis in A&E. Constituents have also told me shocking stories of how they have waited for well over an hour in an ambulance before being allowed into the hospital for treatment.
"So while I am obviously concerned about this, I am not surprised.
"A&E units serving people in this region are struggling in a way not seen since the bad old days of the mid-1990s.
"David Cameron promised the NHS would be safe on his watch but instead his Government has done nothing while this crisis has worsened. Instead, his Government's NHS reforms and cuts to local authorities are worsening this crisis. People in hospital are unable to go home or into care homes because of cuts made by the Tories and Lib Dems. The system cannot cope.
"What we have seen in recent days at the Royal and at Aintree, shows just what damage this government is doing.
"That's why I welcome my colleague Shadow Health Secretary Andy Burnham's call for an Emergency Summit to discuss what actions needs to be taken now to stop this from happening again."
Bill said without urgent action, the problem at our local hospitals will get worse.
Bill said: "Patients should not be subjected to poor care because of Ministers' failings. The Tories and the Lib Dems in this area have failed the people of this region because they have supported a government that has spent billions on a top-down re-organisation of the NHS and taken money away from patient care and away from councils.
"The Government must devise an urgent plan to bring all A&Es up to the required standard and ensure there are enough staff on the ground across the NHS to provide the safe care we need."