The extent of ambulance ramping problems in Tasmania has become apparent with a new video from inside the Royal Hobart Hospital (RHH).

Shot secretly by paramedics it shows ambulance officers with patients on stretchers in crowded corridors of the RHH waiting for admission.

The footage was taken on Wednesday when nine ambulances were parked at the hospital.

According to the Health and Community Services Union's Tim Jacobson, that is the entire metropolitan ambulance fleet in Hobart.

Inside the hospital, ambulance officers stay with patients providing them with care while waiting to be admitted into the emergency department.

The union said it believed at least three Tasmanians had died this year alone, as a direct result of ambulances being tied up in ramping queues.

"Patient safety is being put at risk as a result of both delayed responses as a result of ramping but also having to wait with patients in the corridor of the royal," Mr Jacobson said.

A government spokeswoman said the claim about deaths was disgusting, unsubstantiated and should be withdrawn.

But the union said Ambulance Tasmania would be aware of the deaths and should be investigating.

The Health Union says up to three people have died because of delays caused by ambulance ramping. ( ABC News: Rob Reibel )

He said ambulance ramping was also happening at the Launceston General Hospital and the North West Regional Hospital in Burnie.

The chairman of the Medical Staff Association at the Royal Hobart Hospital, Frank Nicklason, said there were simply not enough beds at the hospital.

"We can't admit patients in the emergency department quickly enough and therefore we have difficulty moving patients into the Emergency Department," Dr Nicklason said.

"So those ambulances aren't available to attend the next job in the community.

"It runs the risk of there being delays in seeing the next emergency case and that's of course a concern."

He said the situation was causing fear among doctors in the community.

"GPs are holding onto patients in their practices in the community who would otherwise be sick enough to be in hospital but they just know the situation at the royal."

Waiting times worsen

The latest Productivity Commission report shows ambulance emergency response times in Tasmania have increased by more than 7 minutes over four years.

Productivity Commission Report Ambulance response times Statewide figures Minutes 2016-17 31.4 2015-16 26.3 2014-15 25.3 2013-14 24.8 2012-13 23.9

Tasmania has the longest ambulance response times in the country.

It takes an ambulance in Tasmania 6 minutes longer to attend an emergency than it does in the Northern Territory, which has the next longest response times in the country.

Branch Council chair for the Australian Medical Association in Tasmania, John Davis, said paramedics, nurses and doctors were not to blame.

"Governments from decades ago have not invested sufficiently in the health system in this state."

He said a 10-bed and five-recliner chair facility was due to open near the emergency department soon and about 20 beds would become available at the Repat Hospital this year.

"That will free up beds in the hospital which means patients in emergency needing a bed in the hospital will move and that will hopefully help the ramping issue," he said.

The State Government defended its health plans which included an additional $125 million for ambulance services.

The spokeswoman said this involved employing an extra 56 paramedics.