CIHOC Reception AreaCentral Illinois Hematology Oncology Center (CIHOC) is an independent, four physician Medical Oncology and Hematology practice centrally located with offices and clinics at Baylis Medical Building in Springfield, Passavant Area Hospital in Jacksonville and St. Francis Hospital in Litchfield, Illinois. CIHOC was established in 1986 by Dr. Lanzotti and was originally located in the Centrum Building in downtown Springfield. In 2010 our Springfield office moved to our current location at Baylis Medical Building. CIHOC employs 25 professional and supportive staff dedicated to meeting our patient’s needs. The primary mission for CIHOC has always been to provide high quality, evidenced based, compassionate care for cancer and hematology patients in our region. Please call our office and speak to one of our staff to receive information regarding cancer or hematology issues or to make an appointment with one of our physicians.