Dr. Elhassan joined Massachusetts General Hospital in October 2020. Before coming here, he was on the faculty at the Mayo Clinic and was a Professor of Orthopaedic Surgery at Mayo Clinic College of Medicine.
Dr. Elhassan received his medical degree at the American University of Beirut. He completed three years of training in general surgery focusing on cardiothoracic surgery and one year in orthopaedic surgery at the American University of Beirut. Dr. Elhassan went on to complete his residency in orthopaedic surgery at the University of Illinois in Chicago. While there, he received the Senior Alpha Omega Alpha Honor Medical Society, as well as the Robert Ray Award for Research. Dr. Elhassan completed a fellowship in hand and upper extremity at the Mayo Clinic and an additional fellowship in shoulder and elbow surgery at Mass General.
Dr. Elhassan started working at the Mayo Clinic in 2007. He won the Mayo Clinic Teacher of the Year Award for two consecutive years in 2009 and 2010, and his upper extremity service was voted as one of the best rotations for the Mayo Clinic’s residents and fellows.
Dr. Elhassan has been innovative in the field of upper extremity surgery and he has developed numerous novel procedures (20 new surgical procedures for the shoulder, elbow and wrist) through dedicated anatomic and biomechanical studies. The care and outcome of patients, specifically those with complex shoulder and elbow problems, improved significantly because of these innovations. He is considered the world expert in the evaluation and management of scapulothoracic disorders, and tendon transfers around the shoulder and elbow.
Dr. Elhassan has published over 125 peer-reviewed articles and authored thirty book chapters. He has presented at countless meetings both nationally, as well as internationally, and he has won numerous awards for best abstract, paper, poster, video and podium presentation in national and international hand and shoulder and elbow societies. He is also the recipient of the 2015 ASES Traveling Fellowship Exchange Program.
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Shoulder Service
55 Fruit St.
Yawkey Center for Outpatient Care
Suite 3G
Boston, MA 02114
Phone: 617-724-7300
Medical Education
American Board Certifications
Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.
Dr. Elhassan's main research is focused on understanding the anatomy and biomechanics of the shoulder. He was able, with the help of his colleagues, to create a state-of-the-art shoulder model to conduct his studies on. This model has helped in the evaluation of the kinematics of the scapula and the scapulothoracic articulation. In addition, it helped determine the effectiveness of different muscle transfers to reconstruct the deficient rotator cuff, in native shoulders as well as in shoulders with reverse shoulder arthroplasty.
Dr Elhassan and his staff were super respectful! They answered all questions and went deeper into the reasoning behind their interventions. They explained the procedure and allowed me to express concerns for everything. I would highly recommend this gentleman for all shoulder needs
Just the provider I want to see
Dr. Elhassan was knowledgeable, explained everything particularly well, and gave me a feeling of confidence in the procedures we discussed.
Excellent. Dr. Elhassan is a brilliant surgeon. He is extremely kind and cares about me. I have absolutely no complaints about him, his professional staff or the care I have received for the past year. I hold them all on a very high pedestal of great esteem and admiration. I asked to have a shot in my left shoulder that is pending surgery and they ... Read More
A very care and thoughtful provider. Dr Bassem is into every detail and makes you feel you are not only in the best hands/ but also with the best team!
Outstanding reputation and bedside manner. Dr Elhassan exhibited confidence, competence, humility and humanity.
Dr. Elhassan is wonderful. Amazing surgeon and wonderful person. I feel lucky to be his patient!
I went in for a second opinion on a surgery that went wrong. Dr Elhassan was confident he could fix me and spoke directly to me and made me feel very comfortable with him. I have the utmost confidence in his ability to help me with a second surgery.
Positive! My referring orthopedic doctor in Pennsylvania convinced me to get proper diagnosis for a scapular disorder I developed from a shoulder injury. Dr Elhasann examined me and I am scheduling surgery and respect his medical opinion. I will never forget my trip to Massachusetts for this opinion on my condition.
Dr. Elhassan has been the best physician, surgeon that I have met in my entire medical history. I just wish I met him earlier in my medical endeavor to try and fix my pectoral tendon. Moving forward, there's no one that can make me more comfortable than Dr. Elhassan, so I know I'm in the right hands and look forward to the future. And if I need ... Read More