| THE OREGON CLINIC | PORTLAND | 3301 | No Different Than the National Rate |
| OREGON ENDOSCOPY CENTER LLC | SPRINGFIELD | 3136 | No Different Than the National Rate |
| SURGERY CENTER OF SOUTHERN OREGON LLC | MEDFORD | 2949 | No Different Than the National Rate |
| BEND SURGERY CENTER LLC DBA BEND SURGERY CENTER | BEND | 2904 | No Different Than the National Rate |
| THE OREGON CLINIC | PORTLAND | 2773 | No Different Than the National Rate |
| SALEM ENDOSCOPY CENTER LLC | SALEM | 2554 | No Different Than the National Rate |
| THE OREGON CLINIC | TUALATIN | 1830 | No Different Than the National Rate |
| NORTHWEST GASTROENTEROLOGY CLINIC LLC | PORTLAND | 1787 | No Different Than the National Rate |
| SAMARITAN ENDOSCOPY LLC | CORVALLIS | 1769 | No Different Than the National Rate |
| NORTH BEND MED CTR DAY SURGERY | COOS BAY | 1470 | No Different Than the National Rate |
| CENTRAL OREGON SURGERY CENTER LLC | BEND | 888 | No Different Than the National Rate |
| GSO EQUIPMENT CORP DBA THE OREGON CLINIC ENDOSCOPY CENTER NEWBERG | NEWBERG | 830 | No Different Than the National Rate |
| ASHLAND SURGERY CENTER | ASHLAND | 733 | No Different Than the National Rate |
| THE OREGON CLINIC | OREGON CITY | 708 | No Different Than the National Rate |
| CASCADE ENDOSCOPY CENTER LLC | SPRINGFIELD | 687 | No Different Than the National Rate |
| CORVALLIS CLINIC PC DBA THE CORVALLIS CLINIC SURGERY CENTER | CORVALLIS | 647 | No Different Than the National Rate |
| GRANTS PASS SURGERY CENTER | GRANTS PASS | 617 | No Different Than the National Rate |
| PORTLAND CLINIC | TIGARD | 385 | No Different Than the National Rate |
| YAMHILL VALLEY SURGICAL CENTER INC | MCMINNVILLE | 372 | No Different Than the National Rate |
| PLAZA AMBULATORY SURGERY CENTER LLC | PORTLAND | 86 | No Different Than the National Rate |
| WILLAMETTE SURGERY CENTER LLC | SALEM | 58 | No Different Than the National Rate |
| KAISER PERMANENTE SUNNYBROOK SURGERY CENTER | CLACKAMAS | 51 | No Different Than the National Rate |
| KLAMATH SURGEONS LLC | KLAMATH FALLS | 31 | No Different Than the National Rate |
| BURNSIDE SURGERY CENTER | GRESHAM | — | N/A |
| DAY SURGERY AT RIVERBEND | SPRINGFIELD | — | N/A |