California has the most ASCs of any state and Vermont has the fewest, according to the most recent data from CMS.
Here are the 16 states with the most ASCs:
1. California: 848
2. Florida: 468
3. Texas: 458
4. Georgia: 386
5. Maryland: 341
6. New Jersey: 259
7. Pennsylvania: 245
8. Arizona: 212
9. Ohio: 198
10. Washington: 183
11. New York: 160
12. Colorado: 141
13. North Carolina: 137
13. Tennessee: 137
15. Illinois: 134
15. Indiana: 134