Highlights
Age Groups Seen
- Adults
- Geriatrics
Languages
- English
Gender
MaleAbout Jason A Efstathiou
Dr. Efstathiou is Professor of Radiation Oncology at Harvard Medical School (HMS), Vice-Chair of Faculty & Academic Affairs and Director of the Genitourinary (GU) Division in the Department of Radiation Oncology and Clinical Co-Director of The Claire and John Bertucci Center for GU Cancers at Massachusetts General Hospital. He holds a BS from Yale University, MD from HMS, DPhil from the University of Oxford, and completed his residency training in the Harvard Radiation Oncology Program.
His busy and robust clinical practice focuses on treatment of patients with prostate, bladder, testicular and other urologic cancers, as well as proton beam therapy and brachytherapy. Delivery of first-rate excellent patient care is a focus and his commitment to patient care, service and mentorship has been recognized as honoree for the MGH Cancer Center's "The One Hundred", as nominee for the Brian A. McGovern Award for Clinical Excellence, as Health Professional of the Game (for the Patriots and Red Sox), as a MGH Mentor with Distinction, and as recipient of the 2021 A. Clifford Barger Excellence in Mentoring Award from HMS.
He is an internationally recognized leader in the field of GU malignancies and Radiation Oncology. His research has informed clinical guidelines and made novel contributions to organ preservation for bladder cancer and technology assessment of advanced/emerging therapies for prostate cancer including proton therapy. He is the recipient of significant grant funding and serves as the Principal Investigator of multi-center, NCI-sponsored, randomized trials in prostate and bladder cancer. He also remains active in evaluating biomarkers for bladder and prostate cancer outcomes. Other projects of his include the development of web-based patient decision aids/support tools, integrating Patient Reported Outcome Measures (PROMs) into practice, evaluating the multidisciplinary approach to cancer care, and global oncology outreach efforts with Botswana.
He lectures nationally and internationally and holds leadership positions in Oncology including within the cooperative groups (NRG Oncology - Vice-Chair GU Steering Committee and Bladder Lead), professional societies (ASTRO, ASCO, ABR, ACRO), and the National Cancer Institute (NCI). He also serves on patient advocacy organizations including the Bladder Cancer Advocacy Network (BCAN) and on the Board of Directors for the Massachusetts Prostate Cancer Coalition (MPCC).
Locations
- Mass General Brigham Cancer Institute Radiation Oncology at the Claire and John Bertucci Center for Genitourinary Cancer
- 32 Fruit Street, Yawkey Building, 7th Floor, Suite 7e, Boston, MA 02114
- Get Directions
- phone: 617-724-4000
- fax: 617-726-8685
- Mass General Brigham Cancer Institute Radiation Oncology Clinic
- 55 Fruit Street, Boston, MA 02114
- Get Directions
- phone: 617-726-8650
- fax: 617-726-3603
Expertise
Education
- Residency: Brigham and Women's Hospital, Radiation Oncology, 2008
- Internship: Brigham and Women's Hospital, Internal Medicine, 2004
- Medical Education: Harvard Medical School, 2003
Board Certifications
- Radiation Oncology: American Board of Radiology, 2009
Insurance
- Aetna
- Beech Street
- Blue Cross Blue Shield
- Blue Cross Blue Shield - Indemnity
- Blue Cross Blue Shield Medicare
- Cigna
- Commonwealth Care Alliance
- Coventry
- Fallon Health
- Harvard Pilgrim Health Care
- Humana
- Maine Community Health Options
- Mass General Brigham Health Plan
- MassHealth
- Medicaid ME
- Medicaid NH
- Medicaid RI
- Medicaid VT
- Medicare
- Medicare ACO
- Multiplan
- Railroad Medicare
- Senior Whole Health
- TriCare
- Tufts Health Plan
- Tufts Medicare Preferred
- United Health Care
- Wellpoint
- WellSense
- WellSense NH
Ratings & Reviews
5 out of 5
73 ratings, 20 reviewsThe Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
- Reviewed on 1/28/2026
The most professional experience ever.
- Reviewed on 1/29/2026
Jason Efstathiou Is awesome! he is very patient, knowledgeable and considerate. One of the best doctors I have ever met!
- Reviewed on 12/18/2025
Excellent care by excellent providers thank you
- Reviewed on 12/16/2025
They make an unpleasant situation tolerable.
- Reviewed on 8/13/2025
I felt that he listened and understood my concerns and was thorough.
- Reviewed on 8/8/2025
My experience with Dr. Efstathiou and his team at Mass General has been nothing short of exceptional. I've always had the opportunity to ask as many questions as I needed to. With a disease like what I had and slash have, there's some sensitive conversations that need to happen. Whether it was a nurse or Dr. Efstathiou, I always felt comfortable with asking the questions that I wanted to ask. And overall, extremely happy with the care that I've been provided by Dr. Efstathiou's office and himself.
- Reviewed on 8/7/2025
Very professional and knowledgeable.
- Reviewed on 8/5/2025
I am very grateful for the great care I am receiving.
- Reviewed on 7/31/2025
I am very pleased with the doctors and the nurses at Mass General. It has been an excellent experience so far.
- Reviewed on 7/24/2025
This is precisely the kind of experience that makes me grateful to live in this area of the world and to have access to MGH for my medical needs. Thank you!
- Reviewed on 7/23/2025
A quality professional experience.
- Reviewed on 7/2/2025
Always had a great experience with all the providers, nurses and techs at MGH
- Reviewed on 6/11/2025
I think Jason is an excellent doctor particularly in his field of expertise. I chose him specifically after visiting top practitioners in his field and because of his ability to explain the disease and differentiate treatment options within radiation possibilities. Furthermore his ability to differentiate and answer questions about post "surgical" complications was very helpful. One other motivating reason for selecting Jason was that several of the doctors I spoke with in leadership positions in different regions of the country when queried about their education and training were students of Jason. All advised I would be in good hands with Jason and his team.
- Reviewed on 6/11/2025
I am very satisfied with my radiation oncologist Dr. Jason Efstathiou.
- Reviewed on 5/28/2025
As expected, the experience was top-notch.
- Reviewed on 5/21/2025
He was outstanding. He knows the subject-matter and listened to every question and concerned. I am very happy with him.
- Reviewed on 5/15/2025
Professional
- Reviewed on 5/8/2025
Good afternoon, this is [redacted]. I'm a patient of Dr. Efstathiou, and Dr. Efstathiou is beyond reproach. He's a good guy. Efstathiou was a great guy, very knowledgeable, very caring, and does a great job. And the nurses were kind, informative, and right to the point. I have no complaints. I'm satisfied with everybody. Thank you.
- Reviewed on 5/8/2025
Dr. Efstathiou is great. He always provided me with excellent care. He listens well and respects me as a patient and as a person. Individuals with cancer can be very concerned and anxious about there health and Dr. Efstathiou has the ability and skill to deal with this reality. I will always be grateful for the care he provided for me. [redacted]
- Reviewed on 4/14/2025
Nothing. first class all the way!