Heidi Pfeifer, RD, LDN, FAND Clinical Nutrition Specialist II, Clinical Nutrition Image Phone (617) 355-4759 Email Email Me Print Profile Request an Appointment Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115 Listen Heidi Pfeifer, RD, LDN, FAND Clinical Nutrition Specialist II, Clinical Nutrition Medical Services Programs & Services Epilepsy Center Nutrition Center Gastroenterology, Hepatology and Nutrition Languages English Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115