Dr. Chang is a rheumatologist with more than 28 years of clinical experience. His major clinical interest is in rehabilitative rheumatology, and he is regarded as an expert in this field. He is the Immediate Past Chair of the Rehabilitation Section of the American College of Rheumatology and co-author of the rehabilitation chapter in Koopman's and Moreland's textbook, Arthritis and Allied Conditions, one of the major international rheumatology textbooks.
Dr. Chang has been the Director of the Northwestern University Master of Public Health Program since its reorganization in 1996. During this time he has led the program to achieve pre-accreditation by the Council on Education for Public Health (CEPH) in 2000 and full accreditation from CEPH in 2003. The program focuses on public health education for medical students and health professionals and trains its students to become effective boundary-spanners between the fields of medicine and public health, an appropriate description of Dr. Chang's professional career. In September, 2007, Dr. Chang ended a two year appointment as Acting Chair of the Department of Preventive Medicine,
Dr. Chang is noted for 1) his clinical epidemiologic/health services research focused on the outcomes of rehabilitation and orthopaedic surgical treatments for persons with arthritis and 2) his research on the determinants of arthritis-associated functional limitation and disability in clinical and community populations. Much of his community population work has been done in collaboration with Dorothy Dunlop, PhD and Larry Manheim, PhD. He also has experience performing decision analysis and cost-effective analysis in collaboration with Dr. Manheim and Gordon Hazen, PhD. With several research and clinical colleagues, Dr. Chang developed and is currently testing a physical activity promotion program for patients with arthritis, supported by a five-year investigator-initiated grant funded by the National Institutes of Health. He has mentored many postdoctoral fellows and several recipients of NIH Mentored Clinical Research Career Development Awards (K23).
Dr. Chang's public health oriented research, reflective of his formal public health training and interests, has also led to his prominence in the arthritis public health community both at the state and national level. He has been an active volunteer for the Arthritis Foundation for more than 25 years, serving on standing committees overseeing public policy, research, and public health activities. Currently, he is a National Board member and the Chair of the National Office's Mission Committee.