Do you have enough meds to get you thru until you find a new provider?
I was taking Adderall and Ativan (which is similar to Klonopin).
During a stressful period of my life I realized the Adderall and Ativan were fighting against each other. Too much Adderall was making me nervous and anxious, which I was treating with Ativan.
I cut the Adderall in half and felt much better, and didn't need as much Ativan.
Note I did not STOP the Adderall, I just realized it was too much and I was attempting to treat the side effects with Ativan, and the two meds were doing opposite things, fighting each other.
Later a new doctor switched me from Adderall to Nuvigil, which ended up being much better. Years of Adderall started causing my hair and teeth to fall out. (Fortunately the periodontist saved my teeth.)
There was an uncomfortable transition period when we stopped the Adderall and hand not yet started the Nuvigil. I forgot the doctor had a plan and felt I was being jerked around.
Someone reminded me the doctor had a plan and I felt better. Hell I can easily withstand suffering a few weeks of transition, that's nothing compared to what I've been through!
I'm doing fine on Nuvigil now and hardly ever need Ativan, though I still have it.
Every patient is different. I'm not suggesting you switch to Nuvigil. I do believe some doctors actually know what they are doing, when they are allowed to do their job.
It's not easy being a patient. We need hope and encouragement that the people treating us actually do care about us and have a viable plan.
It's hard for me to judge a doctor's plan when I know my mind isn't functioning fully well and I'm just suffering. That's when I ask them to reassure me that the doctor has a plan and he's a good doctor and the plan will get me to a better place med wise and it will all be worth it a few weeks from now.
Regarding your legal question, the only way the law would help you would be if you can prove malpractice (not just a differing medical opinion) and that damage to you resulted directly from it (and didn't have any other cause). If I understand what you said about getting the runaround, your complaint would probably have to be framed to show they never intend to do anything for you and have delayed on purpose while you suffered, knowing you were suffering. But even if you could get a lawyer to take the case, these things operate at such a snail's pace that you would be long with your new provider by the time you would get a hearing. Doctors can do what they think is medically appropriate, as long as it would seem reasonable to other educated medical professionals.
Anyway, I think you weren't looking so much for whether malpractice law is apt here, but more for a rule that if a medication plan is in place and has been approved by doctors and has been working, it should be the medication plan put into place by a new doctor. I don't think you will find that law. Sometimes in big medical systems, doctors have to abide what has already been decided by a different doctor in the same system (especially if that doctor is higher ranking than they are) but otherwise you can't force the issue.