I think every denial from an insurance company (that’s denying care prescribed by a doctor), should be required to come from a named and licensed doctor, who is

I think every denial from an insurance company (that’s denying care prescribed by a doctor), should be required to come from a named and licensed doctor, who is responsible for your care as if they are the treating physician (and thus subject to the same medical malpractice laws). A denial should be required to come with either an alternate treatment plan, or an alternative diagnosis and treatment plan. If a doctor issues a denial after reviewing your case for 3 seconds (as has happened in the past), they should be liable for medical malpractice lawsuits. In your case, that would mean the denial would be required to come with an alternative treatment plan, which would say 2x500mg.