My finances are also "unhealthy" to say the very least, so I have a little experience with this. I'm fairly certain medicaid is nationwide. Its a program with reduced copay or no copay insurance through state agencies. He'll have to apply in the county he resides in, (if its the same as ours) and the benefits vary from state to state. The state social service agency can also refer him to clinics that are sliding fee if he does not qualify for medicaid. If he has a family dr., he may also be able to help refer him to someone who can assist him.
I know how hard this is without the finances and insurance to back you up. I'm actually being treated by my family practice dr. at the moment because I just recently got my ins. approved. I'm not particularly happy with that situation though.
Good Luck to you and your brother