DepartmentsRadiation OncologySpecialty GroupsSpine CareBrain Tumor ProgramNuclear Medicine TherapyEarly Onset and Hereditary GI Cancers ProgramLocationPhoenix, ArizonaLanguagesEnglishExisting patientsSend a secure message via patient portal Conditions treatedAcoustic neuromaAnal cancerAstrocytomaBrain metastasisBrain tumorChordomaChoroid plexus papillomaColon cancerEpendymomaEsophageal cancerGallbladder cancerGlioblastomaGliomaGynecologic cancerMeningiomaNeuroendocrine tumorNeurofibromaNeurofibromatosisOligodendrogliomaPancreatic cancerPancreatic neuroendocrine tumorPituitary tumorSarcomaSpinal tumorStomach cancer Procedures performedBrachytherapyBrain stereotactic radiosurgeryStereotactic radiosurgeryTotal body irradiation InterestsMultidisciplinary treatment including irradiation for sarcoma (retroperitoneal and extremity), gastrointestinal (esophagus, stomach, pancreas, hepatobiliary, colorectal, anus), CNS (brain and spine), and gynecologic malignanciesSpecialized techniques include intracranial and body stereotactic radiosurgery, intraoperative electron therapy, and brachytherapy Mayo Clinic locations Phoenix, Arizona Driving Directions More info Billing & insurance Accessibility services Education2006Chief Resident - Department of Radiation OncologyMemorial Sloan-Kettering Cancer Center2005Resident - Radiation OncologyMemorial Sloan-Kettering Cancer Center2002Transitional InternshipUniversity of Chicago Program B, Louis A. Weiss Memorial Hospital2001MDUniversity Of Chicago Pritzker School Of Medicine1999PhDCommittee on Immunology, University of Chicago1991BABrown UniversityShow more education Activities and honorsCertifications2007Radiation OncologyAmerican Board of RadiologyAwards and honors20212020-2021 Educator of the Year AwardAssociation of Residents in Radiation Oncology (ARRO), Department of Radiation Oncology, Mayo Clinic in Arizona2001Graduation with HonorsUniversity Of Chicago Pritzker School Of Medicine2001Senior Prize for Research in Radiation OncologyUniversity of Chicago1992Medical Scientist Training Program GrantUniversity of Chicago1991Rotary Foundation International Graduate ScholarshipUniversity of Cambridge1991Graduation with Honors in Biological SciencesBrown University1991Albert Arnold Bennett Class of 1872 Award for Excellence in BiologyBrown University1991Division I Varsity Baseball Team Member; 4-year Letter RecipientBrown University1987National Merit Scholarship FinalistNew Trier Township High SchoolShow more awards and honorsProfessional memberships2024 - presentMedical DirectorMayo Clinic Proton Therapy Program, Mayo Clinic2021 - presentJudge, Poster PresentationsMayo Clinic Academic Excellence Day, Division of Education Administration, Mayo Clinic College of Medicine and Science2020 - presentProgram DirectorRadiation Oncology Residency Program, Programs in Arizona, Mayo School of Graduate Medical Education2019 - 2020Judge, Oral PresentationsMayo Clinic Academic Excellence Day, Division of Education Administration, Mayo Clinic College of Medicine and Science2018 - 2022ChairProton Beam Clinical Practice Multi-Site Audit Committee, Mayo Clinic Proton Therapy Program, Mayo Clinic2017 - 2023Co-ChairGastroesophageal Cancer Disease Group, Mayo Clinic Cancer Center2015 - 2017ChairGastroesophageal Cancer Standards Council, Mayo Clinic Cancer Center2015 - 2017ChairSarcoma and Cutaneous Malignancies Track, Annual Meeting Scientific Committee, American Society for Radiation Oncology2013 - 2023Associate Program DirectorRadiation Oncology Residency Program, Programs in Arizona, Mayo School of Graduate Medical Education2013 - 2016MemberClinical Research Subcommittee, Research Operations Management Team, Mayo Clinic Arizona Committees2013 - 2015Vice ChairSarcoma Track, Annual Meeting Scientific Committee, American Society for Radiation Oncology2013 - presentChairMultidisciplinary Esophageal Cancer Group, Mayo Clinic Cancer Center - Arizona, Mayo Clinic Cancer Center2013 - presentMemberInternational Association for the Study of Lung Cancer2013 - presentMemberParticle Therapy Cooperative Group - North America (PTCOG-NA)2012 - 2015ChairGastrointestinal Oncology Research Disease Working Group, Mayo Clinic Cancer Center - Arizona, Mayo Clinic Cancer Center2011 - 2013MemberRadiation Safety Subcommittee, Clinical Practice Committee - Arizona, Executive Operations Team - Arizona2008 - presentMemberAmerican Society of Clinical Oncology2007 - presentMemberSociety for Neuro-Oncology2002 - presentMemberAmerican Society for Radiation OncologyShow more professional membershipsPublicationsSee my publications Conditions treatedProcedures performedInterestsMayo Clinic locationsEducationActivities and honors Request an appointment PST-20225233 Doctors & Medical Staff Ashman, Jonathan B. M.D., Ph.D.