Yes, it's incredibly inefficient to have highly trained, expensive doctors acting as tier-1 tech support. But they have a powerful union, so they can keep being paid top dollar for their grunt work.
The kinds of doctors that work as "tier-1 tech support" -- that is, primary care -- are not being paid top dollar, believe me. After you account for the cost of education, delay of entry to the workforce, hours worked per week, and the fact that insurance compensation models are biased towards specialty care and procedures, and it starts to look like bad financial planning.