Mr Mahajan specializes in upper limb surgery, including shoulder elbow and hand. Being fellowship trained his working in consultant capacity since 2011.

He provides care for conditions like shoulder impingement, rotator cuff problems, shoulder instability and arthritis. He also caters services for all elbow conditions. His interests in hand surgery are Dupuytren contracture, carpal tunnel surgery, trigger fingers, etc.

He has various academic positions including lead for undergraduate medical education and honorary clinical lecturer at University.

He has several research papers published to his credit in reputed journals like JBJS, Injury, and CORR.