The hospital in Bedford-Stuyvesant had planned to end ambulance services the day after Christmas, and close altogether on Jan. 7.
But the state Department of Health is giving the hospital enough money to keep it open until at least March 7, an infusion of $8 million.
Supporters will have to find a permanent solution by then to keep the hospital open for longer.
Mayor-Elect de Blasio released a statement thanking the state:
"Time and time again, 175,000 Brooklynites have faced the prospect of losing Interfaith Medical Center. And because this community has stood together, months later the doors remain open and people continue to get the medical care they need. We are grateful to Governor Cuomo for this additional time, and we will use it to push towards a durable solution that preserves vital healthcare in these already-underserved neighborhoods.