Surgical Oncologist & General Surgery – Specialist in Tumors of the Breast, Liver, Gastrointestinal Tract, Pancreas, Sarcomas and Melanoma. Donald A McCain M.D. Ph.D Is the Chief of Surgical Oncology (Dept. of Surgery) and Vice Chairman of the John Theurer Cancer Center at Hackensack University Medical Center Assistant Clinical Professor of Surgery- UMDNJ, and is a board certified surgical oncologist whose major interests are melanoma, gastric cancer, colorectal cancer, hepatobiliary cancer, sarcomas and micromatasteses