In June last year, NSW Premier Gladys Berejiklian announced a $1 billion investment into ambulance services, including 750 new paramedics and staff over a four-year period.

While 200 new paramedics joined the ranks during 2018/19, none started work at a station in Central or Western NSW, the Australian Paramedics Association (APA) said.

Union executive officer Scott Beaton works in the region and he said he had seen firsthand how staff levels affected response times.

"It's increasing fatigue levels of paramedics and, as it progresses up the chain, it impacts hospitals," he said.

"We've needed extra [paramedics] out here for some time."

Dubbo region paramedics have experienced a 19.4 per cent jump in responses, from 4009 in January to February 2018 to 4788 in the same period this year.

Responses in Orange jumped by 10.8 per cent, from 2767 to 3067, while Bathurst responses jumped by 7 per cent, from 2005 to 2146 and in Lithgow and Mudgee paramedics had a 3.7 per cent jump in callouts, from 2232 to 2314.

The increase in responses lead to a longer average time for an ambulance to reach the emergency case in all regions except Bathurst, which had a slight decrease.

Mr Beaton said the NSW government's promise of 750 new staff across a four-year period was too long and called for new paramedics now.

"As soon as you get on this side of the sandstone curtain we're just forgotten," he said.

Mr Beaton said a scheduled statewide enhancement program meeting to plan for staff in Western NSW should have been held last November, but it was cancelled and never re-booked.

"What they're planning for Western NSW, we still don't know because they haven't informed the union of the staff," he said.

"I've no idea when new paramedics are coming out."

APA president Chris Kastelan said paramedics were doing their best to cope with the workload but were frustrated by the slow rollout of recruits.

"The latest figures on response times show that NSW Ambulance is failing to provide adequate front-line services to the public," he said.

"We can't wait for another three years."

NSW Ambulance were contacted for this story but were unable to provide a response before deadline.

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