You can Google integrative doctors in your area. You may have a Naturopaths in your area that do this too. You're looking for someone who knows how to order and understand a cdsa, etc. Comprehensive digestive something?
You might ask the people at a local health food store to recommend someone too.
Some take insurance and some don't. Just to give you a head start, from what I've seen if you haven't already they're going to recommend that you go on the elimination diet. The most efficient way to do this is to eat whole foods. Fwiw, I'd slowly make the change.
Imho, you can try to treat your symptoms on your own but seeing a medical professional who can help guide you or any chronically ill patient is the best way to go.
good luck. x