Envision Healthcare files for Chapter 11 bankruptcy

Physician staffing company Envision Healthcare filed for Chapter 11 bankruptcy protection Monday, and said it reached agreements with certain of its key lenders.

Nashville, Tennessee-based

 said it entered into a restructuring support agreement for about $7.7 billion in debt. Amsurg, its ambulatory surgery unit, and Envision Physician Services will be owned separately. Envision will sell its surgery centers to Amsurg for $300…