Statistics · Other care providers

Ambulatory Surgery Centers by State (2026)

Name: Ambulatory Surgery Centers by State (2026)
Creator: US Patient Guide

Medicare (CMS) lists 6,665 certified ambulatory surgical centers in the United States, with 23,368 operating rooms and 1,558 procedure rooms. California has the most (934). Of the centers with a known ownership type, 95.3% are for-profit.

Source: Centers for Medicare & Medicaid Services (CMS), Provider of Services, “Provider of Services File - Internet Quality Improvement and Evaluation System”. Data updated October 16, 2026.

Ten highest values

Surgery centers

The full table below is the text version of this chart. It shows the highest values only; it does not say which places are better or worse.

All states and territories

54 rows

Ambulatory Surgery Centers by State (2026). Click a column heading to sort (needs JavaScript); the table is already in order without it.
State	Surgery centers	Operating rooms	Procedure rooms	With ownership data	For-profit	Share for-profit
Alabama	61	237	57	53	51	96.2%
Alaska	20	44	2	18	16	88.9%
Arizona	250	771	13	230	225	97.8%
Arkansas	85	215	13	85	84	98.8%
California	934	2,200	103	878	826	94.1%
Colorado	134	414	89	128	123	96.1%
Connecticut	56	135	44	53	52	98.1%
Delaware	22	65	5	20	20	100.0%
District of Columbia	3	8	0	2	1	50.0%
Florida	538	1,408	184	472	461	97.7%
Georgia	414	826	33	401	384	95.8%
Guam	2	5	1	2	2	100.0%
Hawaii	24	53	5	24	20	83.3%
Idaho	65	122	10	59	57	96.6%
Illinois	136	443	43	136	122	89.7%
Indiana	147	483	24	141	135	95.7%
Iowa	34	152	39	33	32	97.0%
Kansas	74	218	13	66	65	98.5%
Kentucky	42	249	0	39	35	89.7%
Louisiana	89	259	13	88	88	100.0%
Maine	15	43	6	14	13	92.9%
Maryland	361	686	118	332	322	97.0%
Massachusetts	55	155	13	53	48	90.6%
Michigan	128	374	32	124	120	96.8%
Minnesota	92	287	43	83	75	90.4%
Mississippi	88	229	31	77	76	98.7%
Missouri	97	219	49	86	84	97.7%
Montana	26	67	4	23	22	95.7%
Nebraska	46	137	19	43	41	95.3%
Nevada	92	255	0	81	79	97.5%
New Hampshire	28	74	2	25	20	80.0%
New Jersey	253	575	38	251	248	98.8%
New Mexico	23	75	18	19	18	94.7%
New York	193	783	3	184	176	95.7%
North Carolina	155	484	12	145	124	85.5%
North Dakota	15	40	4	15	12	80.0%
Ohio	217	680	10	211	204	96.7%
Oklahoma	43	110	10	35	33	94.3%
Oregon	91	271	18	91	87	95.6%
Pennsylvania	243	608	131	218	207	95.0%
Puerto Rico	29	88	25	28	26	92.9%
Rhode Island	16	58	4	14	13	92.9%
South Carolina	89	290	8	80	73	91.3%
South Dakota	15	35	16	15	13	86.7%
Tennessee	163	511	32	152	151	99.3%
Texas	524	1,600	97	494	480	97.2%
U.S. Virgin Islands	4	6	0	4	4	100.0%
Utah	64	172	15	59	57	96.6%
Vermont	2	8	0	2	2	100.0%
Virginia	82	249	30	73	67	91.8%
Washington	168	5,505	48	163	144	88.3%
West Virginia	6	38	0	6	6	100.0%
Wisconsin	93	306	25	89	80	89.9%
Wyoming	19	43	6	19	19	100.0%
United States	6,665	23,368	1,558	6,236	5,943	95.3%

Territories appear when the source lists at least one provider there. An empty cell means the source has no value to calculate it from, not zero.

How we calculated this

We count the ambulatory surgical centers in the CMS Provider of Services file (iQIES) by state and add up the operating rooms and procedure rooms each reports. Ownership is the file's ownership type; the share is for-profit centers divided by centers with a known type.

Data sources and dates

Centers for Medicare & Medicaid Services (CMS), Provider of Services: “Provider of Services File - Internet Quality Improvement and Evaluation System”, updated October 16, 2026.

Limits of the data

Only Medicare-certified centers are counted; some surgery centers are not certified. Medicare does not publish a star rating for these centers.

Every figure is a count, sum or average of values in the official files above; none is estimated. Read the about page for how this site works and data freshness for when each source was last refreshed.

Download and cite

Download the table as CSV One row per row of the table, English column names, no totals row.

Cite this page

US Patient Guide. “Ambulatory Surgery Centers by State (2026).” Computed from Centers for Medicare & Medicaid Services (CMS), Provider of Services, “Provider of Services File - Internet Quality Improvement and Evaluation System” (data updated October 16, 2026). https://uspatientguide.com/statistics/surgery-centers-by-state/

Common questions

How many ambulatory surgery centers are there in the US?

6,665 Medicare-certified centers in the file released July 1, 2026.

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