The award recognises the work of the nursing team from the Mobile GP in delivering vital health services to homeless and disadvantaged people around the Perth inner city.
Team leader Sarah Ravine said she was elated when she received the news that her team had won.
Ms Ravine said they were up against two other deserving teams with services dedicated to seniors and at-home palliative care.
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READ NOW"One of our regular patients nominated us " it was so amazing to be nominated," she said.
"When they called and announced that we had won it, I nearly fainted.
"To be recognised in your own peer group is just amazing, especially for us nurses; it's awesome."
Ms Ravine said many homeless people had drug and alcohol problems and other health needs but did not like to visit healthcare facilities.
"There are lots of people who find it difficult to get healthcare for many reasons, whether due to an inability to physically access services, or for fear of judgement," she said.
"Our program brings much-needed services to the streets.
"Our nurses treat homeless people at different locations throughout the city, whether on the streets, in a park or under a makeshift shelter."