Exhibit 21.1

Subsidiaries of IPC The Hospitalist Company, Inc.

|                                               |  |                              |  |                  
|---------------------------------------------- |  | ---------------------------- |  | -----------------
|Name of Subsidiary                             |  | Jurisdiction of Organization |  | Doing Business As
|Hospitalists, Inc.                             |  | California                   |  | N/A              
|                                               |  |                             
|IPC Hospitalists of Colorado, Inc.             |  | Colorado                     |  | N/A              
|                                               |  |                             
|InPatient Consultants of Alabama, Inc.         |  | Alabama                      |  | N/A              
|                                               |  |                             
|InPatient Consultants of Delaware, Inc.        |  | Delaware                     |  | N/A              
|                                               |  |                             
|InPatient Consultants of Florida, Inc.         |  | Florida                      |  | N/A              
|                                               |  |                             
|InPatient Consultants of Kentucky, Inc.        |  | Kentucky                     |  | N/A              
|                                               |  |                             
|InPatient Consultants of Missouri, Inc.        |  | Missouri                     |  | N/A              
|                                               |  |                             
|InPatient Consultants of Mississippi, Inc.     |  | Mississippi                  |  | N/A              
|                                               |  |                             
|InPatient Consultants of Utah, Inc.            |  | Utah                         |  | N/A              
|                                               |  |                             
|Hospitalists of Arizona, Inc.                  |  | Arizona                      |  | N/A              
|                                               |  |                             
|Hospitalists of Illinois, Inc.                 |  | Illinois                     |  | N/A              
|                                               |  |                             
|Hospitalists of Georgia, Inc.                  |  | Georgia                      |  | N/A              
|                                               |  |                             
|Hospitalists of Maryland, Inc.                 |  | Maryland                     |  | N/A              
|                                               |  |                             
|Hospitalists of Michigan, Inc.                 |  | Michigan                     |  | N/A              
|                                               |  |                             
|Hospitalists of North Carolina, Inc.           |  | North Carolina               |  | N/A              
|                                               |  |                             
|Hospitalists of Nevada, Inc.                   |  | Missouri                     |  | N/A              
|                                               |  |                             
|Hospitalists of South Carolina, Inc.           |  | South Carolina               |  | N/A              
|                                               |  |                             
|Hospitalist of Tennessee, Inc.                 |  | Tennessee                    |  | N/A              
|                                               |  |                             
|Hospitalists of Texas, L.P.                    |  | California                   |  | N/A              
|                                               |  |                             
|InPatient Consultants of Wyoming, LLC          |  | Wyoming                      |  | N/A              
|                                               |  |                             
|Hospitalists Management of New Hampshire, Inc. |  | New Hampshire                |  | N/A              
|                                               |  |                             
|Hospitalists of Ohio, Inc.                     |  | Ohio                         |  | N/A              
|                                               |  |                             
|Hospitalists of Pennsylvania, Inc.             |  | Pennsylvania                 |  | N/A