Most of us see Rheumy doctors also. I would highly recommend you contact your GI or Primary Care doc and see if you can get a referral. Crohns related arthritis is very common.
Been living with Crohn's Disease for 32 years. Currently on Asacol, Prilosec 60 mg, Estrace, Prinivil, Diltiazem, Percoset prn for pain and Calcium. Resections in 2002 and 2005. Recently diagnosed with Fibromyalgia and doing tests to see if I have Inflammatory Arthritis or AS.