California had the most Medicare-certified ASCs as of June 2018, according to data from The Ambulatory Surgery Center Association.
Using data provided by CMS, ASCA reported the number of Medicare-certified ASCs in each state as of June 2017 and June 2018. Here's the percentage increase or decrease for each state from 2017-18:
South Dakota: -10.5 percent
June 2017: 19
June 2018: 17
New Mexico: -5.6 percent
June 2017: 18
June 2018: 17
New Jersey: -3.7 percent
June 2017: 269
June 2018: 259
Washington: -3.1 percent
June 2017: 194
June 2018: 188
South Carolina: -3 percent
June 2017: 67
June 2018: 65
Ohio: -2.7 percent
June 2017: 186
June 2018: 181
Massachusetts: -1.8 percent
June 2017: 56
June 2018: 55
Tennessee: -1.5 percent
June 2017: 136
June 2018: 134
Colorado: -0.82 percent
June 2017: 122
June 2018: 121
Indiana: -0.8 percent
June 2017: 125
June 2018: 124
Hawaii: 0 percent
June 2017: 21
June 2018: 21
Idaho: 0 percent
June 2017: 52
June 2018: 52
Alabama: 0 percent
June 2017: 35
June 2018: 35
California: 0 percent
June 2017: 794
June 2018: 794
Iowa: 0 percent
June 2017: 24
June 2018: 24
Kansas: 0 percent
June 2017: 63
June 2018: 63
Maine: 0 percent
June 2017: 16
June 2018: 16
Rhode Island: 0 percent
June 2017: 10
June 2018: 10
Montana: 0 percent
June 2017: 17
June 2018: 17
Utah: 0 percent
June 2017: 41
June 2018: 41
Vermont: 0 percent
June 2017: 1
June 2018: 1
Washington, D.C.: 0 percent
June 2017: 3
June 2018: 3
West Virginia: 0 percent
June 2017: 10
June 2018: 10
Wyoming: 0 percent
June 2017: 18
June 2018: 18
Maryland: 0.3 percent
June 2017: 345
June 2018: 346
Michigan: 1 percent
June 2017: 99
June 2018: 100
Louisiana: 1.2 percent
June 2017: 81
June 2018: 82
Nevada: 1.4 percent
June 2017: 69
June 2018: 70
North Carolina: 1.9 percent
June 2017: 104
June 2018: 106
Connecticut: 2.1 percent
June 2017: 48
June 2018: 49
Missouri: 2.1 percent
June 2017: 95
June 2018: 97
Florida: 2.2 percent
June 2017: 417
June 2018: 426
Oregon: 2.3 percent
June 2017: 86
June 2018: 88
Oklahoma: 2.4 percent
June 2017: 42
June 2018: 43
Kentucky: 3 percent
June 2017: 33
June 2018: 34
Georgia: 3.2 percent
June 2017: 339
June 2018: 350
Arkansas 3.3 percent
June 2017: 60
June 2018: 62
New Hampshire: 3.8 percent
June 2017: 26
June 2018: 27
Virginia: 3.8 percent
June 2017: 52
June 2018: 54
Wisconsin: 3.9 percent
June 2017: 77
June 2018: 80
Arizona: 4 percent
June 2017: 174
June 2018: 181
Illinois: 4.1 percent
June 2017: 122
June 2018: 127
Delaware: 4.3 percent
June 2017: 23
June 2018: 24
Minnesota: 4.3 percent
June 2017: 69
June 2018: 72
Mississippi: 4.3 percent
June 2017: 69
June 2018: 72
Nebraska: 4.3 percent
June 2017: 47
June 2018: 49
Pennsylvania: 4.3 percent
June 2017: 234
June 2018: 244
New York: 5.2 percent
June 2017: 134
June 2018: 141
Alaska: 6.7 percent
June 2017: 15
June 2018: 16
Texas: 6.8 percent
June 2017: 366
June 2018: 391
North Dakota: 9 percent
June 2017: 11
June 2018: 12
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