Dr. Moon provides care for a wide range of general rheumatologic conditions, which include rheumatoid arthritis, spondyloarthritis, systemic lupus erythematosus, polymyalgia rheumatica, vasculitis, gout, pseudogout, Sjogren syndrome, systemic sclerosis and myositis. He is particularly interested in musculoskeletal ultrasound evaluations and ultrasound guided interventions; diagnostic ultrasound evaluations for rheumatoid arthritis, spondyloarthritis (enthesitis) and crystal arthropathies (gout and pseudogout); assessment of inflammatory arthritis disease activity and monitoring therapeutic response; ultrasound guided aspiration and injection for accuracy, safety and better clinical outcomes.