Well, I am no expert in malpractice law or insurance but many carriers will charge a lot more for a "collaborative" model than a supervisory one. I was specifically asked if I was going to be supervising CRNAs while doing my own cases at the same time. The Insurance company said "no". Either the CRNA is independent or I'm legally covering the cases, all of them, without being the only anesthesia provider on the chart (if 2 or more cases are underway).
I am not talking about Medical Direction vs Supervision as that is blurry line.
The worst of both worlds is the collaborative model. Let the surgeons deal with the consequences when a "medical" issue arises preop, intraop or postop.
My state requires, by law, that CRNAs be supervised by a Physician. Since I am the Anesthesiologist on site the surgeons and the insurance company assume that means me.
States That Allow CRNAs to Practice Independently