Each side is accusing the other of hypocrisy and compromising patient care through the closure of beds.

Nurses tracking the number of hospital beds closed in December and January recorded 20 closures at Sunshine, 56 at Footscray, 30 at Williamstown and 16 at Werribee Mercy.

The Australian Nursing Federation said these were just some of the 1516 public hospital beds closed in the past two months.

State secretary Lisa Fitzpatrick said this was more than double the number of beds nurses closed during the peak of their industrial action in November.

"Shutting 1516 beds is unacceptable from a government that says closing beds risks lives," she said.

Western Metropolitan Greens MP Colleen Hartland said while a percentage of the closures might be due to surgeons and staff taking holidays, emergency departments didn't slow down for holidays.

"The Baillieu government has broken three promises in relation to hospitals in the western suburbs. They're attacking nurses and patient ratios, they've cut graduate placements for nurses in hospitals and now they're closing beds. All promises broken."

In Parliament last week, Ms Hartland called on Health Minister David Davis to keep his promise and retain nurse-to-patient ratios, train and employ more nurses and open new hospital beds.

Mr Davis's spokeswoman said it was disingenuous for the union to talk about bed closures when it was prepared to close one in three beds across the system.

The spokeswoman said at least 100 more beds would be opened this financial year.