| Beaumont Medical Transportation Service | Related tax-exempt org | Medical Transportation Services | MI | 260203703 |
| Botsford Continuing Care Corporation | Related tax-exempt org | Long Term Nursing Care | MI | 382549505 |
| Botsford General Hospital | Related tax-exempt org | Hospital | MI | 381426919 |
| Community Emergency Medical Service Inc | Related tax-exempt org | Emergency Medical Services | MI | 382410823 |
| Michigan Mobile PET Imaging | Related tax-exempt org | Mobile PET Scanning | MI | 331086165 |
| Oakwood Healthcare Inc | Related tax-exempt org | Hospital | MI | 381405141 |
| Oakwood United Hospitals Inc | Related tax-exempt org | Facility Leasing | MI | 382837961 |
| Oakwood Home Care Services | Related tax-exempt org | Home Health Services | MI | 382877338 |
| Oakwood Health Promotions Inc | Related tax-exempt org | Assisted and Resident Care Facilities | MI | 382601965 |
| William Beaumont Hospital | Related tax-exempt org | Hospital | MI | 381459362 |
| Beaumont Health Foundation | Related tax-exempt org | Foundation | MI | 364852171 |
| Beaumont Medical Group-Hospital Based Services | Related tax-exempt org | Physician Support Services | MI | 822768899 |
| Beaumont Medical Group-Primary Care Services | Related tax-exempt org | Physician Support Services | MI | 822796539 |
| Beaumont Medical Group-Specialty Services | Related tax-exempt org | Physician Support Services | MI | 822784244 |
| Dearborn Schaeffer Office Company LLC | Related partnership | Real Estate | MI | 262448025 |
| Oakmed LLC | Related partnership | Private Duty Nursing | MI | 461459737 |
| Beaumont Kidney Specialty Services LLC | Related partnership | Dialysis Services | MI | 262200439 |
| Beaumont Indemnity Company Ltd | Related taxable corporation/trust | Premium Deposits | — | 980512415 |
| Beaumont Nursing Home Services Inc | Related taxable corporation/trust | Assisted Care Living | MI | 382799842 |
| Beaumont Physicians Insurance Company Inc | Related taxable corporation/trust | Professional Insurance | MI | 274261262 |
| Botsford Commons Property Assocation | Related taxable corporation/trust | Property Management | MI | 383203663 |
| Oakwood Affiliated Ventures Inc and Subsidiaries | Related taxable corporation/trust | Office of Physicians/Non-Residental | MI | 371753159 |
| Parastar Emergency Systems Inc | Related taxable corporation/trust | Management Dispatch Services | MI | 382755982 |