I need to get someone in to bathe my Dad. Any suggestion of a service provider?

Yep, your dad's doctor would know what programs are available under the current insurance, and what is required to qualify for it. If the doctor hasn't seen your father recently, then he will need to see your dad before doing any prescription or referral for home care services (which includes bathing). Red tape.

Call your dad's Dr. and request a bath aide. The aide will come in and give your dad a bath and it takes no time at all. Plus, it's covered by Medicare.