Community advocates have filed a new lawsuit seeking to keep Mount Sinai Beth Israel hospital from shutting its doors.

The suit comes after a judge dismissed their initial case intended to block the closure, saying it had been filed before the state conditionally approved the hospital's plans last month.

The hospital — located at First Avenue and East 16th Street — has been around since the 1880s, and is under threat of closing down for good.

Mount Sinai bought the institution 10 years ago and says it wants to close due to financial losses — $1 billion in the last decade, according to officials. The hospital also says it's seeing fewer patients than ever.

The new lawsuit alleges the hospital's closure is an attempt to cash in on real estate prices in the neighborhood.

Without the hospital, some patients may have to go to Bellevue Hospital or NYU Langone — both located about a mile away — or seek care even further out.

The state approved the hospital's closure plan on July 25, setting some conditions, including requiring Mount Sinai to run a 24/7 primary and urgent care clinic for at least three months and formalizing an agreement to invest in the expansion of nearby Bellevue Hospital's emergency department.

But community advocates say even that won't meet the needs of the 100 to 150 patients Beth Israel's emergency room has seen per day in the last month.

Neither the New York State Department of Health nor Mount Sinai has commented on the newly filed lawsuit, and no closure date has been set.

Some New Yorkers NY1 spoke with believe it's worth the legal fight to make sure the longstanding hospital stays open.

"I was actually born at that hospital 70 years ago, as was my friend who is with me," longtime community member Rich Bengloff said. "To turn it around and reverse what's already happened is going to be difficult, I think, but I appreciate the fact that people are trying to keep the community support."

"This is a very good location, especially for us tenants here in Stuy Town," added Rosita Macrohon, who previously worked at the hospital for about 40 years. "A few months ago, my husband had a heart attack, so it's very easy for us - we just walk to the hospital."