By Anuja Vaidya
These nine ASCs have been providing care for more than 25 years.
If you would like to recommend another surgery center leader for this list, contact Anuja Vaidya at avaidya@beckershealthcare.com. 
Banner Health Phoenix Surgicenter (41 years). The surgery center, established in 1970, is the first freestanding, multispecialty surgery center in the country. It was rebuilt in 1993 and today, performs more than 800 procedures a month. It has held Accreditation Association for Ambulatory Health Care accreditation for 35 years.
The center includes seven operating rooms, three endoscopy rooms, three overnight stay beds, 23 pre-and postoperative beds and chairs, as well as a pain center. It provides care in numerous specialties including ENT, gastroenterology, orthopedics, ophthalmology, gynecology, general surgery and podiatry.