Compassionate Cancer Treatment Close to Home . Chesapeake Oncology-Hematology Associates, P.A. is the trusted cancer treatment center near you. We have been providing comprehensive hematology-oncology services throughout the community of Columbia, Stevensville, Glen Burnie, and Annapolis, Maryland, for more than 25 years.Tate Cancer Center‧Our Physicians‧Our Practice‧Services‧Blog‧Contact Us.