Vic govt warns against $6 GP charge

David Davis said if, as speculated, the federal government introduces a $6 co-payment for a GP appointment, it would make it tougher for people to go to a doctor.

"It's hard to see how putting additional charges on improves access," Mr Davis told reporters on Thursday.

"We will certainly advocate to the Commonwealth very strongly against making primary care difficult to access."

Federal Treasurer Joe Hockey has warned Medicare might be unaffordable without changes to payments, while Health Minister Peter Dutton has refused to comment on reports the government will introduce the $6 charge for visiting a GP.

Mr Davis said it should be easier to visit a doctor, not harder.

"The risk is if you do increase the cost of primary care and you reduce access to primary care, that there will be increased presentations in our public hospitals," Mr Davis said.

Speaking at the launch of Victoria's latest hospital performance data,