do you know what the cause of his anemia is? i'm guessing since he's on procrit, it isn't your simple iron, b12, etc. deficiency. i'd have him speak with his doctor, and if he can't come up with an alternative, think of seeing a specialist (a hematologist) if he's not already.
another alternative is looking into local senior services, i know many of the council on aging have people that will drive the elderly to doctor's appointments free of charge. another idea would be possibly a visiting nurse, see if insurance would cover it.
Note any information given by me is not intended to replace any medical advice given by a pharmacist, nurse or doctor. As always, you should consult a registered pharmacist, nurse or doctor for any medical concerns about medication and their impact on your health.