Leanne Ortolano NP Gastroenterology Colon Colorectal Esophageal Gallbladder & Bile Duct Liver Neuroendocrine Tumors Pancreatic Rectum Small Intestine Stomach Cancers Treated: Colon Colorectal Esophageal Gallbladder & Bile Duct Liver Neuroendocrine Tumors Pancreatic Rectum Small Intestine Stomach About Leanne Ortolano About Leanne Ortolano Positions Roswell Park Comprehensive Cancer Center Nurse Practitioner Gastroenterology