The official opening of the $91.3 million stage one and two redevelopment of Dubbo Hospital on Tuesday drew the Premier and NSW Health Minister Jillian Skinner to the city where its officials and residents applauded the state government for infrastructure promised but never delivered by its predecessor.

NSW Deputy Premier and state Member for Dubbo Troy Grant, and federal Member for Parkes Mark Coulton, joined the visiting politicians in touring the facility and unveiling a plaque in its foyer before a crowd that spilled out into a connecting corridor.

Mr Coulton, whose electorate of Parkes will soon take up half of NSW, congratulated Mr Baird and his colleagues for "turning around health" in general in Western NSW.

"It took a while for people to realise that Dubbo is a centre of health and a lot of people in the west would rather put up with the consequences of being unwell than make the trip to Sydney," he said.

Mr Coulton was the first but not the last to mention Dubbo's need for expanded cancer treatment services.

"I do think there's a need for a cancer centre to be slotted in here somewhere," he told the crowd.

"Conversations have been had along those lines. I'm starting to screw the ears of my colleagues in Canberra about making a contribution."

A member of the crowd backed the call after the official opening ceremony concluded.

Retired Dubbo clinician and current member of the Western NSW Local Health District's board Joe Canalese said: " Definitely, we must have a cancer centre.

"Nearly all of the other major regional cities now have a cancer centre-Tamworth, Wagga Wagga, Albury.

"That's something we have to work for with the federal and the state governments to have a proper, fully-funded, fully-equipped cancer centre."

Chemotherapy is offered to western region residents from a Dubbo Hospital facility set to be expanded as part of its $150 million stage three and four redevelopment.

Told of the community's continuing quest for radiotherapy services at Dubbo, Mr Baird said the opening of the clinical services building was an "important milestone, but this is not the end of the road".

Mrs Skinner, credited by Mr Grant with championing the redevelopment of Dubbo Hospital, said: "At this stage I don't think there's any plan to do anything".

She wondered if the health district's recent success in recruiting specialists might extend to finding staff to operate linear accelerators.

Mrs Skinner said the establishment of radiotherapy services at Dubbo would rest on a recommendation from the health district.

Consultation with Dubbo Hospital user-groups on the next two stages of the hospital's redevelopment is about to get underway.

General manager Debbie Bickerton hopes the first sod will be turned in 2016 on the four-year project.

She reports that stage three and four redevelopment includes the construction of a third storey on the new clinical services building, to create a medical inpatient unit initially.

Another three-storey building will be constructed to accommodate a new emergency department, imaging facilities, ambulatory care centre and cardiac catheterisation lab.

The state government invested $84.2 million and the federal government $7.1 million in the hospital's first two stages of redevelopment, creating a surgical and birthing hub for the region.