<PAGE>

                                 Exhibit 21.0

                             LIST OF SUBSIDIARIES

1.   Vista Healthcare, Inc., a Texas corporation

2.   Vista Community Medical Center, L.L.C., a Texas limited liability company

3.   ASO Medical, Inc.

4.   Doctors Practice Management, Inc., a Texas corporation

5.   Ambulatory Infusion Therapy Specialists, Inc., a Texas corporation

6.   Vista Land and Equipment, L.L.C., a Texas limited liability



© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission