Connect Now Stephen P. Kahanic, M.D. none Biography Contact Info: Office:  712-252-0088 Facility/Office: Siouxland Hematology/Oncology Associates 230 Nebraska Street Sioux City, IA 51101 Education: College/Medical School: Case Western Reserve University Residency: University of Iowa Fellowship: University of Iowa Certification: American Board of Internal Medicine/Subspecialty in Oncology.