Jason A. Efstathiou MD PhD
Professor of Radiation Oncology, Harvard Medical School, Massachusetts General Hospital
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Massachusetts General Hospital55 Fruit StreetBoston, MA 02114
Phone+1 617-726-5866
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Education & Training
Mass General Brigham/Brigham and Women's Hospital/Massachusetts General Hospital/Harvard Medical SchoolResidency, Radiation Oncology, 2004 - 2008- Mass General Brigham/Brigham and Women's HospitalInternship, Internal Medicine, 2003 - 2004
Harvard Medical SchoolClass of 2003
Certifications & Licensure
MA State Medical License 2008 - 2028
RI State Medical License 2021 - 2028
ME State Medical License 2020 - 2027
NH State Medical License 2021 - 2027
American Board of Radiology Radiation Oncology
Awards, Honors, & Recognition
- CMS Meaningful Use Stage 2 Certification Longitudinal Medical Record, Partners Healthcare System, 2012, 2014, 2016-2017
- CMS Meaningful Use Stage 1 Certification Longitudinal Medical Record, Partners Healthcare System, 2012, 2014, 2016-2017
- CMS Meaningful Use Stage 2 Certification EpicCare Inpatient 2014 Certified EHR Suite, Epic Systems Corporation, 2012, 2014, 2016-2017
Clinical Trials
Publications & Presentations
PubMed
- Understanding Patient Perspectives on Radiation Tattoos.Bonnie Hu, Anurag Saraf, Andrew Johnson, Hope Heldreth, Idalid Franco
Advances in Radiation Oncology. 2026-10-01 - Pace of Cervical Cancer Stage Progression Prior to Radiation Therapy Initiation, an Instrumental Variable Analysis.Preethiya Sekar, Peter Vulysteke, Taolo Ntloedibe, Memory Bvochora-Nsingo, Tlotlo B Ralefala
International Journal of Radiation Oncology, Biology, Physics. 2026-08-12 - Influence of Adverse Pathologic Features on Potential Benefit of Hormone Therapy Use with Postoperative Radiotherapy in Recurrent Prostate Cancer: An Individual Patien...Amar U Kishan, Yilun Sun, Christopher C Parker, Paul Sargos, Matthew Sydes
European Urology. 2026-07-28
Journal Articles
- Utility of Bladder-Sparing Therapy vs Radical Cystectomy for Muscle-Invasive Bladder CancerJason Efstathiou, MD, JAMA
- Impact of Interfractional Motion on Hypofractionated Pencil Beam Scanning Proton Therapy and VMAT Delivery for Prostate CancerA L Zietman, J A Efstathiou, F H Khan, Medical Physics
- Comparison Between Adjuvant and Early-Salvage Postprostatectomy Radiotherapy for Prostate Cancer with Adverse Pathological FeaturesRahul D. Tendulkar, Kevin L. Stephans, Stanley L. Liauw, Robert B. Den, Shre Agrawal, Jason A. Efstathiou, Thomas M. Pisansky, Jason W. Hearn, Jef M. Michalski, Drew M..., JAMA
Authored Content
- PARTIQoL Trial: Proton Therapy vs IMRT for Localized Prostate Cancer - Jason EfstathiouSeptember 2024
- Radical Cystectomy Versus Trimodality Therapy for Muscle-Invasive Bladder Cancer: A Multi-Institutional Propensity Score Matched and Weighted Analysis - Jason Efstathiou & Alexandre ZlottaJune 2023
- Are We Ready to Change Management Based on Next-Generation Imaging? YES: APCCC 2022 Presentation Jason EfstathiouAugust 2022
Press Mentions
Radium‑223 Plus Enzalutamide Boosts Survival in Metastatic Prostate CancerMarch 3rd, 2026- “Big, Important Studies”: What Experts Say to Watch for at ASCO GU 2026February 23rd, 2026
- Biden Did Not Get Prostate Cancer Diagnosis Before Last Week, Spokesman SaysMay 20th, 2025
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