| Memorial Hermann Foundation | Related tax-exempt org | Fundraising | TX | 741653640 |
| Memorial Hermann Health System | Related tax-exempt org | Healthcare | TX | 741152597 |
| Memorial Hermann Medical Group | Related tax-exempt org | Physician SVC | TX | 204923281 |
| Memorial Hermann Community Benefits Corp | Related tax-exempt org | Community | TX | 680511504 |
| MHS Physicians of Texas | Related tax-exempt org | Physician SVC | TX | 760385980 |
| Memorial Hermann Information Exchange | Related tax-exempt org | POP health | TX | 020684202 |
| Memorial Hermann Pharmacy Services LLC | Related tax-exempt org | Pharmacy | TX | 202184459 |
| Memorial Hermann Hospital Based Physicia | Related tax-exempt org | — | TX | 844504483 |
| MHMG Primary Care | Related tax-exempt org | Physician SVC | TX | 922193904 |
| Memorial Hermann Primary Care Alliance | Related tax-exempt org | Physician SVC | TX | 920897835 |
| MHUSP Surgery Centers III LLP | Related partnership | AMB surgery CTR | TX | 200707543 |
| MH Katy Rehab Hospital | Related partnership | Rehabilitation | TX | 263896057 |
| MHUSP Surgery Centers IV LLP | Related partnership | AMB surgery CTR | TX | 208575266 |
| Virtus Memorial WLZ LLC | Related partnership | Investment | DE | 815162347 |
| Intrepid Private Equity SPV-NMP LP | Related partnership | Investment | NY | 844479929 |
| MHUSP Surgery Centers VI LLC | Related partnership | AMB surgery CTR | TX | 882478620 |
| MHUSP Surgery Centers VII LLC | Related partnership | Amb Surgery Ctr | TX | 882453369 |
| SP Taum Sauk Mountain LLC | Related partnership | Investment | TX | 862777477 |
| Redbird Vida Co- Invest LP | Related partnership | Investment | FL | 842453088 |
| Community First Development LP | Related partnership | Investment | TX | 872484035 |
| SL3 Trinity Holdings LLC | Related partnership | Investment | TX | 883875509 |
| The Health Professionals Ins Company LTD | Related taxable corporation/trust | Investment | — | — |
| MHMD | Related taxable corporation/trust | Integrated PN | TX | 760074819 |
| Memorial Hermann Health Solutions | Related taxable corporation/trust | 3rd party admin | TX | 264419989 |
| Memorial Hermann Health Insurance Co | Related taxable corporation/trust | Insurance | TX | 760646301 |