Charles G Murphy, MD

Dr. Zhang is a clinician-researcher with a focus on interstitial lung disease. He sees patients in the ILD clinic at Columbia University and manages patients with connective tissue disease related ILD, hypersensitivity pneumonitis, IPF, post-COVID fibrosis, among many other conditions. Additionally he is focused on conducting novel basic and translational research using next generation sequencing technology on patients with interstitial lung disease, including those with idiopathic pulmonary fibrosis (IPF).

Charles M. Jobin, MD, specializes in treating shoulder and elbow disorders in adults, which includes rotator cuff tears, shoulder instability, tendon and ligament injuries, arthritis and fractures. He is skilled at performing total joint replacements as well as minimally invasive, arthroscopic procedures. Dr. Jobin cares for local athletes and has provided orthopedic coverage for the Tournament of Champions – the world’s largest squash spectator event held annually in Grand Central Terminal. He is the team physician for Riverdale Country School and tends to the orthopedic needs of rugby, lacrosse, and club sports players at Columbia University. During his residency, he also provided coverage for Columbia University Athletics and City College of New York Athletics. Dr. Jobin’s research focuses on the optimization of shoulder replacement outcomes, rotator cuff repair, and tendon injuries. He has co-authored seven book chapters on a range of orthopedic topics and published articles in several of the top journals in his field, including the Journal of Shoulder and Elbow Surgery, the American Journal of Sports Medicine, and the Journal of Bone and Joint Surgery. Dr. Jobin is a member of the International Society of Orthopaedic Surgery and Traumatology, the Alpha Omega Alpha Medical Honor Society, and the American Academy of Orthopaedic Surgeons (AAOS). In 2011, he was inducted into the AAOS Emerging Leaders Program. Inclusion in the prestigious Emerging Leaders Program denotes that an AAOS member is among “a highly select group of orthopaedists who are poised to impact the specialty now and in the future.”

Dr. Maxfield treats patients with a wide range of pulmonary diseases, including asthma, emphysema, COPD, lung cancer, interstitial lung disease, and pulmonary infections. He also has a special interest in occupational lung disease. He is a National Institute of Occupational Safety and Health federally certified B-Reader for interpreting chest x-rays for pneumoconiosis (occupational lung disease).