California has the most Medicare-certified ASCs out of any other state, according to June 2018 data for The Ambulatory Surgery Center Association.
ASCA reported the number of Medicare-certified ASCs in each state as of June 2018 using data provided by CMS.
Top 10 states that have the most ASCs:
1. California: 794
2. Florida: 426
3. Texas: 391
4. Georgia: 350
5. Maryland: 346
6. New Jersey: 259
7. Pennsylvania: 244
8. Washington: 188
9. Arizona: 181
10. Ohio: 181