Is the Envision Physicians Services a legit billing facility through the HCA Florida Hospital in Inverness Fl? Since it seems impossible to reach a human through the phone services to confirm.

Yes! Envision Physicians Services is the name of the ER physician group.

Yes, that's the ER doctors. They bill separately from the hospital!

There mostly all animated answering machines with call back. I have had the same experience but if you leave your name number and reason for call they normally call back