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Josephine Mattsson, MSN, FNP-C Nurse Practitioner, Cardiac Anesthesia Services Image Phone 617-355-6225 Print Profile Request an Appointment Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115 Phone: 617-355-6000 Listen Josephine Mattsson, MSN, FNP-C Nurse Practitioner, Cardiac Anesthesia Services Medical Services Programs & Services Cardiac Anesthesia Services Anesthesia Languages English Education Undergraduate School University of Maine 2011 Orono ME Graduate School Saint Joseph's College of Maine 2019 Standish ME Certifications Family Nurse Practitioner (FNP) Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115 Phone: 617-355-6000