[colonelpopcorn]

That would require the dismantling or restructuring of malpractice law and litigation. The reason a doctor is required to be present is so that an individual can be held responsible to their Hippocratic oath when patients get litigious. Non-board certified staff, AFAIK, don't need to take a Hippocratic oath nor do they need to carry the burden of insurance the same way a doctor or nurse practitioner does.

[ImPostingOnHN]

Many doctors don't actually take the hippocratic oath (some make up their own, like wedding vows) and it wouldn't carry any actual legal force, either. It's like the american pledge of allegiance.