| FSK Land Corporation | Related tax-exempt org | Holds title to real property and remits NET income to its members | MD | 521346470 |
| Johns Hopkins Pediatrics at Home INC | Related tax-exempt org | Home health care | MD | 521803773 |
| Johns Hopkins Pharmaquip INC | Related tax-exempt org | Home health care | MD | 521450994 |
| The Johns Hopkins Home Care Group INC | Related tax-exempt org | Home health care | MD | 521811971 |
| The Johns Hopkins Home Health Services INC | Related tax-exempt org | Home health care | MD | 521684334 |
| Johns Hopkins Healthcare LLC | Related partnership | Medical services | MD | 521899357 |
| Howard County Neonatal Services LLC | Related partnership | Clinical services | MD | 522239402 |
| JHMI Utilities LLC | Related partnership | Utilities services to members | MD | 202814243 |
| Johns Hopkins Surgery Centers Series | Related partnership | Clinical services | MD | 208707724 |
| 550 Broadway Limited Partnership | Related partnership | Real estate | MD | 521794353 |
| Johns Hopkins MED INTL LLC | Related partnership | International health care, education | MD | 533255849 |
| JH Broadway Acquis & Develop | Related partnership | Land holding and development | MD | 522284576 |
| Johns Hopkins Medicine Alliance for Patients LLC | Related partnership | Medical services | MD | 462866692 |
| JH Ventures LLC | Related partnership | Series activities | DE | 760764656 |
| Johns Hopkins Health Care and Surgery Center Development LLC | Related partnership | Real estate | MD | 821388814 |
| Asthma Center LP | Related partnership | Real estate | MD | 521542228 |
| Opthamology Associates LLC | Related partnership | Medical services | MD | 521890957 |
| DOME Corporation | Related taxable corporation/trust | Real estate | MD | 521691281 |
| 550 Broadway INC | Related taxable corporation/trust | Real estate | MD | 521747728 |
| DOME Management Services INC | Related taxable corporation/trust | Real estate | MD | 521691281 |
| Broadway Services INC | Related taxable corporation/trust | Real estate services | MD | 521242693 |
| JH Outpatient Center Condominium INC | Related taxable corporation/trust | Clinical services | MD | — |