AmSurg Corp. is the owner and operator of short stay ambulatory surgery centers (ASCs) in the United States. The Company�s surgery centers are typically located adjacent to or in close proximity to the medical practices of its partner physicians. It generally owns a 51% interest in the facilities that the Company operates. Its surgical facilities primarily provide non-elective, high volume, lower-risk surgical procedures across multiple specialties, including among others gastroenterology, ophthalmology, and orthopedics. As of December 31, 2013, approximately 1.6 million surgical procedures were performed. The Company has over 2,000 preferred specialties of gastroenterology, ophthalmology, orthopedic, ear, nose and throat, or ENT and urology, while the remainder is in specialties such as plastic surgery, podiatry and pain management. The Company believes approximately 50% of its preferred single specialty ASCs and 30% of multi-specialty ASCs are independently owned.