Anastasia Arena, RD, LDN Physician Assistant, Division of Gastroenterology, Hepatology and Nutrition Image Email Email Me NPI 1902315708 Print Profile Request an Appointment Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115 Listen Anastasia Arena, RD, LDN Physician Assistant, Division of Gastroenterology, Hepatology and Nutrition Medical Services Programs & Services Nutrition Center Gastroenterology, Hepatology and Nutrition Languages English Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115