He has indicated that his clinical interests include lung cancer, mediastinal cancer, and thymectomy (thymus gland removal). Dr. Walker is an in-network provider for Coventry, United Healthcare HSA, and United Healthcare HMO, as well as other insurance carriers. Before performing his residency at Jefferson University Hospitals, Dr. Walker attended Thomas Jefferson University, Jefferson Medical College for medical school. He has received professional recognition including the following: Philadelphia Super Doctors; TOP DOCTOR - Thoracic Surgery, U.S. News & World Report; and TOP DOCTOR - Thoracic Surgery. Dr. Walker is professionally affiliated with Bryn Mawr Hospital. His practice is open to new patients.