('disapproving') She had a reputation for being an 'ambulance chaser'. [=a lawyer who gets clients by convincing accident victims that they should file a lawsuit about the accident]
She was taken 'by ambulance' [=in an ambulance] to the hospital.
They called (for) an 'ambulance'.
(..) - Prisoner is missing. - Boyle's gun is gone, Sergeant. - Repeat: Lecter is missing and armed. He's stripped the bed. Might be making a rope. Check all windows. Where the fuck is my ambulance? He's alive. Sergeant Tate, he's alive. Get a hold of him and feel his hand. Talk to him. - What do I say? (..)1991 The Silence of the Lambs
(..) - Brady, Howard, cover... Look! - It's stopped. - Seal off a ten-block radius. Get me the SWAT team and an ambulance double-quick. We're going up. Pembry! Boyle! Oh, God. Go. (..)1991 The Silence of the Lambs