Kelso & Company
Founded in 1971, Kelso specializes in supporting management buyouts. Based in New York, the firm prefers to make more substantial investments in a few targeted sectors, including healthcare. Healthcare companies in its portfolio include Physicians Endoscopy, a national developer, owner, and manager of endoscopic surgery centers. Other healthcare investments have included American Sterilizer, Endo Pharmaceuticals, Spectramed, Unilab and Oceana Therapeutics.