A boost to recently created Urgent Care Response Teams across Sydney will mean more older patients are able to be treated in their own homes or residential facilities.

Premier Chris Minns says about 10, 000 more people across parts of the city will have access to the services, created to take pressure off hospitals and stretched emergency departments.

"We have inherited an overwhelmed health system and nowhere is that clearer than in emergency departments," he said on Thursday.

"We need to relieve some of that pressure."

Health Minister Ryan Park said a new team will be based in Sydney's southwest and another two units already operating in the southeast and northern suburbs will be boosted.

"The expansion of these services will make it easier for older people to access high quality urgent care at the right time from the comfort of their home environment," he said.

"At the same time, we can alleviate the pressure on our local hospitals by reducing unnecessary presentations to our emergency departments."

Mr Park said a range of health care services can be accessed through the response teams, including social workers, physiotherapists, pharmacists and occupational therapists.

Patients can be referred from their GP, aged care provider or can access the service directly.

The Urgent Care Response Teams will see people at no cost to them, seven days a week, with the initiative a part of the government's $124 million program to deliver 25 urgent care services over the next two years.

The services are available between 8am to 10pm for patients in aged care facilities and 8am to 8pm for those in the community.

The initiative follows the roll-out of the InTouch Urgent Care service based in Western Sydney and a youth-focused service launched in April through the Sydney Children's Hospitals Network called VirtualKIDS urgent care service.