Each state is independent regarding the rules and regs. for workers compensation. NJ you have to go to their (your employers choice of doctors);whereas in other states you can choose which doctor you would like to see. I am fortunate. I really like my doctor and find him to be very patient, compassionate and very good- as well as his staff.
To change the laws you must write to our Congressional leaders & Senators in your area or search the States website to see if there are any Bills pending regarding changes to workers comp. Do a google search for as an example I'm in NJ: New Jersey Legislation or go to the States website and there will be links and search the databases for laws, bills, etc.
It is very difficult having to deal with a life altering injury, chronic pain and then to have to deal with people who only know you by a file nuraber. It is very depressing and disconcerting...I'm on my 6th case worker. My doctor and his staff have come to my aid many times in order to push workers comp. to approve the tests and procedures I needed. Also, when all else fails, speak to your attorney (if you have one and let him or her handle it). Not only do you have to fight for what you are entitled to, but I have had to make countless calls to have a couple of bills paid otherwise it would have gone against my credit. It has become a full time job.
But anyhow, Good luck to all.