Digestive Health Institute Team Members 5 items. To interact with these items, press Control-Option-Shift-Right Arrow. Sharona Ross MD, FACS Advanced Foregut & HPB Surgeon Sandra Freeman ARNP-C Nurse Practitioner Dana Manzi MSN, ARNP-BC Nurse Practitioner Cory O'Brien MA, CCC-SLP, BCS-S Speech Pathologist Betsy Prator MSN, ARNP-BC Nurse Practitioner