| Younker Rehabilitation Therapy Services LLC | Disregarded entity | Rehabilitation therapy services | IA | 815031103 |
| ABBE Center for Community Mental Health INC | Related tax-exempt org | Mental health care | IA | 421045257 |
| Abbehealth INC | Related tax-exempt org | Support affiliates' mission to improve health care | IA | 421373123 |
| Aging Services INC | Related tax-exempt org | Senior services | IA | 237085316 |
| Allen College | Related tax-exempt org | Educate and develop healthcare professionals | IA | 421351526 |
| Allen Health Systems INC | Related tax-exempt org | Support affiliates' mission to improve health care | IA | 421201924 |
| Allen Memorial Hospital Corporation | Related tax-exempt org | Hospital | IA | 420698265 |
| Anamosa AREA Ambulance Service | Related tax-exempt org | Provide ambulance services | IA | 421466284 |
| Black HAWK-Grundy Mental Health Center INC | Related tax-exempt org | Mental health care | IA | 420733463 |
| Center for Alcohol and DRUG Services INC | Related tax-exempt org | Substance abuse services | IA | 421134273 |
| Central IOWA Health Properties Corporation | Related tax-exempt org | Property holding company | IA | 421233759 |
| Central IOWA Health System | Related tax-exempt org | Support affiliates' mission to improve health care | IA | 421189791 |
| Central IOWA Hospital Corporation | Related tax-exempt org | Hospital | IA | 420680452 |
| DES Moines AREA Medical Education Consortium INC | Related tax-exempt org | Coordination of medical education programs | IA | 421412497 |
| Eyerly-BALL Community Mental Health Services | Related tax-exempt org | Mental health care | IA | 420942273 |
| Finley TRI-States Health Group INC | Related tax-exempt org | Support affiliates' mission to improve health care | IA | 421307495 |
| Friends of the Black HAWK-Grundy Mental Health Center | Related tax-exempt org | Charitable fundraising | IA | 421372380 |
| Grinnell Regional Medical Center | Related tax-exempt org | Hospital | IA | 420933383 |
| Grinnell Regional Medical Center Foundation | Related tax-exempt org | Charitable fundraising | IA | 421454737 |
| HULT Center for Healthy Living INC | Related tax-exempt org | Health education to the community | IL | 363510390 |
| Human Service Center | Related tax-exempt org | Mental health care | IL | 371004882 |
| IOWA Health Foundation | Related tax-exempt org | Charitable fundraising | IA | 421467682 |
| IOWA Health System | Related tax-exempt org | Support affiliates' mission to improve health care | IA | 421435199 |
| IOWA Physicians Clinic Medical Foundation | Related tax-exempt org | Primary health care services | IA | 421411630 |
| Memorial Foundation of Allen Hospital | Related tax-exempt org | Charitable fundraising | IA | 421201138 |