INTERSTITIAL CYSTITIS DOCTORS

Hi there just wondering if anybody knows of a good doctor to see in Wichita KS for my interstitial cystitis. I have been dealing with this for 20 years and its to the point now where the pain is so severe. I need some form of pain management. I find that my primary care will not prescribe pain meds and my uro sure won't either. This is now disrupting my daily life, i have called into work several times, spent countless nights in the ER and still no constant care for the pain. PLEASE HELP WITH ANY INFORMATION...THANKS