Top 25 U.S. hospitals with the most operating rooms
Operating rooms (ORs) are among hospitals’ most critical resources, as they provide the space and equipment necessary to perform surgeries and other intensive procedures.
While operating room square footage delivers a more granular metric for determining a healthcare facility’s size and overall capacity for complex procedures, a facility’s total number of ORs can indicate its ability to handle multiple operations simultaneously.
Below, we’ve compiled a list of the top 25 hospitals in the U.S. with the greatest number of ORs.
25 hospitals by total number of operating rooms
|Rank||Definitive ID||Hospital name||City||State||# of ORs||Explore dataset|
|1||3120||Cleveland Clinic Main Campus||Cleveland||OH||85||Explore|
|2||4012||Houston Methodist Hospital||Houston||TX||78||Explore|
|3||1973||Massachusetts General Hospital||Boston||MA||70||Explore|
|3||2066||Beaumont Hospital - Royal Oak||Royal Oak||MI||70||Explore|
|3||2191||Mayo Clinic Hospital - Saint Marys Campus||Rochester||MN||70||Explore|
|6||2442||Barnes-Jewish Hospital||Saint Louis||MO||65||Explore|
|7||3572||Thomas Jefferson University Hospital||Philadelphia||PA||62||Explore|
|8||2837||Mount Sinai Medical Center||New York||NY||58||Explore|
|9||2973||Duke University Hospital||Durham||NC||54||Explore|
|9||1135||Northwestern Memorial Hospital||Chicago||IL||54||Explore|
|11||1219||McDonough District Hospital||Macomb||IL||46||Explore|
|12||5533||Regency Hospital of Toledo||Sylvania||OH||45||Explore|
|13||1969||Brigham and Womens Hospital||Boston||MA||44||Explore|
|14||541977||NewYork-Presbyterian Komansky Childrens Hospital||New York||NY||43||Explore|
|15||3766||Erlanger Baroness Hospital||Chattanooga||TN||42||Explore|
|17||2976||Wake Forest Baptist Medical Center||Winston Salem||NC||40||Explore|
|17||3519||Lancaster General Hospital||Lancaster||PA||40||Explore|
|17||2192||Mayo Clinic Hospital - Methodist Campus||Rochester||MN||40||Explore|
|20||3571||Hospital of the University of Pennsylvania||Philadelphia||PA||39||Explore|
|20||2625||Dartmouth-Hitchcock Medical Center||Lebanon||NH||39||Explore|
|20||4018||Memorial Hermann - Texas Medical Center||Houston||TX||39||Explore|
|20||4271||Inova Fairfax Hospital||Falls Church||VA||39||Explore|
|20||274150||Childrens Memorial Hermann Hospital||Houston||TX||39||Explore|
|21||1461||University of Iowa Hospitals & Clinics||Iowa City||IA||38||Explore|
Which U.S. hospital has the most operating rooms?
The Cleveland Clinic Main Campus in Ohio has 85 ORs, putting it at the top of our list and about 8% ahead of the hospital with the second-greatest number of ORs: Houston Methodist Hospital in Texas, with 78 ORs.
Third place is a three-way tie between Massachusetts General Hospital in Boston, Beaumont Hospital – Royal Oak in Michigan, and Mayo Clinic Hospital – Saint Marys Campus in Rochester, Minnesota, each with 70 ORs.
Together, the 25 hospitals featured on our list have 1,281 ORs. The average number of ORs per hospital is just over 51.
What are the three types of operating rooms?
Every OR is designed with different specifications to meet the unique needs of a hospital and the population it serves. However, ORs are broadly divided into one of three types: digital, hybrid and integrated.
Digital ORs are built around a central data system that integrates imaging, software, and video data systems. These ORs enable simpler sharing, transfer, and collection of medical data, which may be referenced during the operation or used afterward to assess outcomes and inform care plans.
Hybrid ORs bring together surgical equipment and medical imaging devices, supporting minimally invasive surgical procedures without the need to transfer the patient to another room for imaging. Hybrid ORs are equipped for most surgical disciplines but are generally best suited to those requiring high-resolution imaging of smaller body parts, such as cardiovascular or neurological surgery.
Integrated ORs feature functionally integrated surgical systems that combine lighting, audio, video and operating equipment in a single, centrally controlled unit. This integration improves surgical efficiency by eliminating the need to move equipment to and from the operating table during the course of a procedure.
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