California’s Ambulatory Surgery Centers: A Black Box of Care

by Laurence Baker

Feb 1, 2018

Many surgeries are performed in freestanding, or "same-day," ambulatory surgery centers (ASCs). The number of freestanding ASCs in California has increased dramatically over the past 11 years. However, due to a legal decision that removed reporting requirements for ASCs in the state, little is known about the volume of procedures, type of procedures, and financial operation of the vast majority of these facilities. looks at the most recent data on the supply, use, quality, and finances of freestanding ASCs in California, as well as trends from 2005 to 2016.