Margaret Spadinger NP Surgical Oncology Colon Gallbladder & Bile Duct Liver Neuroendocrine Tumors Pancreatic Rectum Cancers Treated: Colon Gallbladder & Bile Duct Liver Neuroendocrine Tumors Pancreatic Rectum About Margaret Spadinger About Margaret Spadinger Positions Roswell Park Comprehensive Cancer Center Nurse Practitioner Surgical Oncology