From experience, have him move to your home or in the city where the hospital is located. Then apply through the social worker at hospital for hospital grants. Hospitals are given grants that are for patients without income or insurance. My mom had to apply unfortunately she did not live in the same city as the hospital. But an undidentified donor helped her a little. So thankful for those kind people. Either the social worker at hospital or patient/financial services at the hospital should be able to help.
K.