This question assumes the doctor treating you is considered the ATP (authorized treating physician) or a specialized physician referral to by the ATP. This also assumes that the body part you want treated is part of your accepted workers' compensation claim.
Ever since 2018, the PMT Conference is the way to avoid many delays in medical treatment. The process is simple. All parties get on the phone with a Judge at the State Board of Workers' Compensation who issues an opinion on the same day. The opinion is declared an Order and thereafter may be appealed within 20 days.
The Chairman of the State Board of Workers' Compensation spoke at a breakfast in mid-2019, and stated that about 80% of these conferences never took place because the insurance adjusters or their lawyers authorized the proposed medical treatment right before the conference call! In 10% of the cases, the insurance company controverted the procedure and a hearing was scheduled. In the other 10% of the cases, the Petition was withdrawn for insufficient evidence. All in all, I am quite pleased to be able to use this excellent tool to move my client's treatment forward.