| Advocate Illinois Masonic Medical Center | Chicago | Acute Care Hospital | 
                                
                                    | Swedish Hospital | Chicago | Acute Care Hospital | 
                                
                                    | Northwestern Medicine Central Dupage Hospital | Winfield | Acute Care Hospital | 
                                
                                    | Advocate South Suburban Hospital | Hazel Crest | Acute Care Hospital | 
                                
                                    | Alternative Sleep Disorders Center | Algonquin | Sleep Study Center | 
                                
                                    | Methodist Hospitals Inc | Gary | Acute Care Hospital | 
                                
                                    | Merit Sleep Technologies | Lombard | Sleep Study Center | 
                                
                                    | Centegra Memorial Medical Center | Woodstock | Medical Center | 
                                
                                    | Advocate Christ Hospital and Medical Center | Oak Lawn | Acute Care Hospital | 
                                
                                    | Saint Margaret Mercy - Hammond Campus | Hammond | Acute Care Hospital | 
                                
                                    | Ingalls Memorial Hospital | Harvey | Acute Care Hospital | 
                                
                                    | Loyola University Medical Center | Maywood | Acute Care Hospital | 
                                
                                    | Oak Forest Hospital | Oak Forest | Acute Care Hospital | 
                                
                                    | John H Stroger Jr Hospital | Chicago | Acute Care Hospital | 
                                
                                    | Merit Center for Sleep Health of Elmhurst | Elmhurst | Sleep Study Center | 
                                
                                    | South Chicago Sleep Lab | Chicago | Sleep Study Center | 
                                
                                    | St Catherine Hospital Inc | East Chicago | Acute Care Hospital | 
                                
                                    | Northshore University Healthsystem - Evanston Hospital | Evanston | Acute Care Hospital | 
                                
                                    | Provident Hospital of Chicago | Chicago | Acute Care Hospital | 
                                
                                    | Sleep Diagnostic Center | Chicago | Sleep Study Center | 
                                
                                    | Good Night Sleep Center | Morris | Sleep Study Center | 
                                
                                    | Advocate Sherman Hospital | Elgin | Acute Care Hospital | 
                                
                                    | Advocate Good Samaritan Hospital | Downers Grove | Acute Care Hospital | 
                                
                                    | Advocate Condell Medical Center | Libertyville | Acute Care Hospital | 
                                
                                    | Presence Saint Francis Hospital | Evanston | Acute Care Hospital | 
                                
                                    | Northwestern Medicine Delnor Community Hospital | Geneva | Acute Care Hospital | 
                                
                                    | Aurora Medical Center Kenosha | Kenosha | Acute Care Hospital | 
                                
                                    | Tinley Park Sleep Center | Tinley Park | Sleep Study Center | 
                                
                                    | Ann and Robert H Lurie Childrens Hospital of Chicago | Chicago | Childrens Hospital | 
                                
                                    | Merit Center for Sleep Health of Arlington Heights | Arlington Heights | Sleep Study Center | 
                                
                                    | Children's Hospital of Wisconsin - Kenosha | Kenosha | Childrens Hospital | 
                                
                                    | Shriners Hospitals for  Children - Chicago | Chicago | Childrens Hospital | 
                                
                                    | Franciscan Health Dyer | Dyer | Acute Care Hospital | 
                                
                                    | Westlake Hospital | Melrose Park | Acute Care Hospital | 
                                
                                    | Midwest Center for Sleep Disorders | Aurora | Sleep Study Center | 
                                
                                    | Elmhurst Memorial Hospital | Elmhurst | Acute Care Hospital | 
                                
                                    | Franciscan Health Rensselaer, Inc | Rensselaer | Critical Access (Rural) Hospital | 
                                
                                    | Alexian Brothers Medical Center 1 | Elk Grove Village | Acute Care Hospital | 
                                
                                    | Able Home Sleep Centers | Crystal Lake | Sleep Study Center | 
                                
                                    | Roseland Community Hospital | Chicago | Acute Care Hospital | 
                                
                                    | University of Illinois Hospital and Clinics | Chicago | Acute Care Hospital | 
                                
                                    | Digitrace Care Services | Chicago | Sleep Study Center | 
                                
                                    | Orawin Sleep Mobile Technology | Elburn | Sleep Study Center | 
                                
                                    | St. Alexius Center for Sleep Health | Hoffman Estates | Sleep Study Center | 
                                
                                    | Thorek Memorial Hospital | Chicago | Acute Care Hospital | 
                                
                                    | Digitrace Care Services | Merrillville | Sleep Study Center | 
                                
                                    | Merit Center for Sleep Health of Streamwood | Streamwood | Sleep Study Center | 
                                
                                    | Saint Francis Hospital and Health Center | Blue Island | Acute Care Hospital | 
                                
                                    | Presence Mercy Medical Center | Aurora | Acute Care Hospital | 
                                
                                    | Holy Family Medical Center | Des Plaines | Medical Center | 
                                
                                    | Adventist Hinsdale Hospital | Hinsdale | Acute Care Hospital | 
                                
                                    | Northwestern Memorial Hospital | Chicago | Acute Care Hospital | 
                                
                                    | Vista Medical Center West | Waukegan | Medical Center | 
                                
                                    | Michael Reese Hospital and Medical Center | Chicago | Medical Center | 
                                
                                    | The University of Chicago Medical Center | Chicago | Acute Care Hospital | 
                                
                                    | Edward Hospital | Naperville | Acute Care Hospital | 
                                
                                    | Valley West Community Hospital | Sandwich | Critical Access (Rural) Hospital | 
                                
                                    | Midwest Center for Sleep Disorders | Yorkville | Sleep Study Center | 
                                
                                    | Medtek Diagnostics | Evergreen Park | Sleep Study Center | 
                                
                                    | Merit Center for Sleep Health of Chicago Lakeshore | Chicago | Sleep Study Center | 
                                
                                    | Vista Medical Center East | Waukegan | Acute Care Hospital | 
                                
                                    | Adventist LA Grange Memorial Hospital | La Grange | Acute Care Hospital | 
                                
                                    | Asn Sleep Disorders Center at Chicago Lakeview | Chicago | Sleep Study Center | 
                                
                                    | Mercy Harvard Hospital | Harvard | Critical Access (Rural) Hospital | 
                                
                                    | Merit Center for Sleep Health of Oak Park | River Forest | Sleep Study Center | 
                                
                                    | Naperville Center for Sleep Health | Naperville | Sleep Study Center | 
                                
                                    | Morris Community Sleep Center | Morris | Sleep Study Center | 
                                
                                    | Loyola Gottlieb Memorial Hospital | Melrose Park | Acute Care Hospital | 
                                
                                    | Sleepwatchers | Lake Villa | Sleep Study Center | 
                                
                                    | Community Hospital | Munster | Acute Care Hospital | 
                                
                                    | Franciscan Health Crown Point | Crown Point | Acute Care Hospital | 
                                
                                    | Saints Mary and Elizabeth Medical Center | Chicago | Medical Center | 
                                
                                    | Sleep Centers of America | Chicago | Sleep Study Center | 
                                
                                    | MT Sinai Hospital Medical Center | Chicago | Acute Care Hospital | 
                                
                                    | Cardinal Sleep Centers of America | Joliet | Sleep Study Center | 
                                
                                    | Digitrace Care Services | Orland Park | Sleep Study Center | 
                                
                                    | Northwest Community Hospital 1 | Arlington Heights | Acute Care Hospital | 
                                
                                    | Froedtert South Inc. | Kenosha | Acute Care Hospital | 
                                
                                    | Advocate Lutheran General Hospital | Park Ridge | Acute Care Hospital | 
                                
                                    | Sleep Remedy Center | Chicago | Sleep Study Center | 
                                
                                    | Sleep Wake Center | Hammond | Sleep Study Center | 
                                
                                    | Osf Little Company of Mary Medical Center | Evergreen Park | Acute Care Hospital | 
                                
                                    | Sleep Center of Northwest Indiana | Merrillville | Sleep Study Center | 
                                
                                    | Northwestern Medicine Kishwaukee Hospital | Dekalb | Acute Care Hospital | 
                                
                                    | Merit Center for Sleep Health of St. Charles | St Charles | Sleep Study Center | 
                                
                                    | Franciscan Health Olympia and Chicago Heights | Olympia Fields | Acute Care Hospital | 
                                
                                    | Advocate Good Shepherd Hospital | Barrington | Acute Care Hospital | 
                                
                                    | Insight Hospital and Medical Center Chicago | Chicago | Acute Care Hospital | 
                                
                                    | Rush University Medical Center | Chicago | Acute Care Hospital | 
                                
                                    | Northwestern Lake Forest Hospital | Lake Forest | Acute Care Hospital | 
                                
                                    | Presence Saint Joseph Medical Center | Joliet | Acute Care Hospital | 
                                
                                    | Digitrace Care Services | Barrington | Sleep Study Center | 
                                
                                    | Global Sleep Centers | Chicago | Sleep Study Center | 
                                
                                    | American Sleep Medicine | Skokie | Sleep Study Center | 
                                
                                    | Larabida Childrens Hospital I | Chicago | Childrens Hospital | 
                                
                                    | West Suburban Medical Center | Oak Park | Acute Care Hospital | 
                                
                                    | Preferred Sleep Labs | Glenview | Sleep Study Center | 
                                
                                    | Macneal Hospital | Berwyn | Acute Care Hospital | 
                                
                                    | Better Sleep Center of Hinsdale | Hinsdale | Sleep Study Center | 
                                
                                    | North Shore Sleep Solutions | Evanston | Sleep Study Center |