JM★★★★★5.0(1)Dr. Jonathan Marron, MDPediatric Hematologist-Oncologist, Pediatrician, Hematology / Oncology SpecialistBoston, MAAccepting patientsAffiliated with a Castle Connolly Top HospitalAccepting patientsAffiliated with a Castle Connolly Top Hospital(617) 632-3270(617) 632-3270Ratings & ReviewsMost RecentHighest Rated01/24/2012really fantasticpersonable, kind, relaxed. did a great job and put my son at ease while making me and my husband laugh. a great doctor!1