If you don't have a doctor stating that you are injured and that it's work- related, you don't have a case. Always count your X-rays, MRI's, etc., before you give them to the doctor and count them after you get them back. Make sure you leave with the same amount of films you had when you arrived. Just like doctors, there are good lawyers and bad ones. Before you sign with a comp lawyer, interview him.
Some people go down to the workers' comp court and talk to other injured workers for a referral.
Call the injured workers' groups in your state and ask them. Ask your union. Before you have a hearing, make a list of what's needed in terms of medical care, wage replacement or payments of medical bills and mileage. Make a copy of the list. Total all mileage.