Where can I find someone to drive dad to his day treatments?

We, here in Fargo, ND/Moorhead, MN have several van services. Have you checked with your county adult social services agency?They may be able to give you direction for local help.

Have you tried you church? My local church provides this service through a volunteer group. It has been very successful.

I work for a clint that has a company that comes to his house and takes when where he needs to go. Maybe you could look into getting some transportation like that