Ambulance waiting times in Victoria are worse than predicted with 28 per cent of code-one life and death cases waiting more than 15 minutes last year.

Victorian ambulance waiting times are far worse than predicted, the paramedics union says.

87,000 Victorians with a code one life and death emergency waited more than 15 minutes for an ambulance, according to a freedom of information report the union has received.

The paramedics union says people in the outer suburbs were the worst affected with waiting times far exceeding that of their inner city counterparts.

Those living in the Golden Plains shire near Geelong waited the longest, with just one-in-ten who logged a code-one call, getting help within 15 minutes.

Nillumbik was the worst area in metropolitan Melbourne, with just 47 per cent of code-one calls receiving an ambulance on time.

Overall 86,739 or 28 per cent of the code-one lights and sirens cases waited longer than 15 minutes for an ambulance in 2013/14.

The union said the revamp of the Ambulance Victoria board was the key to solving the crisis.

"Some hard decisions have to be made to address this problem," Ambulance Employees Australia state secretary Steve McGee said.

The best performing areas were the city of Yarra, Melbourne and Whitehorse which logged 87-89 per cent of calls being attended within 15 minutes.

All board members of Ambulance Victoria resigned last week at the request of the state's new Premier Daniel Andrews, in a bid to end a two-year paramedic pay dispute.

AAP.