The man, also aged in his 20s, was flown to the same hospital in a critical condition at 7am on New Year’s Eve. He is now listed as stable.

Ambulance Victoria received more than a 1000 emergency cases across the state from 6pm until 3am as revellers celebrated the start of 2019.

The call-outs also included two men with serious facial burns caused from explosions.

A man, aged in his 60s, was taken to The Alfred hospital in a stable condition after he was hit by fireworks in Altona Meadows just after midnight.

Earlier, a man, also aged in his 60s, reportedly suffered significant facial burns after a bonfire exploded in Yarck in the Goulburn Valley.

Ambulance Victoria New Year’s Eve Health Commander Ian Hunt said calls were up from last year.

“It was much busier than last year … well above the average of what we’d expect,” he said.

Mr Hunt said paramedics responded to a range of cases, including intoxicated and drug affected revellers, burns, slips, trips and falls.

He said the largest spike in calls came between 12am to 2am, when paramedics responded to 324 emergency cases.

“With more than 1000 people needing our assistance, it was pleasing that very few cases were of a serious nature,” he said.

Mr Hunt said there were extra paramedics rostered on across Melbourne and the Mornington Peninsula, at the early Footscray Park fireworks, and at The Falls and Beyond the Valley music festivals.

At 2am, Deputy Commissioner Shane Patton said police has so far been pleased with the behaviour of the majority of New Year’s Eve revellers across the state.

He said crowds had generally heeded their advice to celebrate safely and responsibly.

“All but a handful of the hundreds of thousands of Victorians enjoying New Year’s Eve festivities have behaved well,” Deputy Commissioner Patton said.

A police spokeswoman said they would provide an update on crowd behaviour later on New Year's morning.

The emergencies also included a man who suffered burns to his hand after falling into a campfire near Kaarimba about 12.30am.

The man, aged in his 20, was treated by paramedics before being taken by ambulance to the Goulburn Valley Health hospital in a stable condition.

Earlier, a man, aged in his 70s, almost drowned at Rye Beach on the Mornington Peninsula.

Passers-by saw the man struggling in the water and pulled him out about 9.45pm.

He was treated by paramedics and taken to Frankston Hospital in a serious but stable condition.