Who is a Rheumatologist? The role of the rheumatologist is to diagnose (detect), treat and medically manage patients with arthritis and other rheumatic diseases. These health problems affect the joints, muscles, bones and sometimes other internal organs (e.g., kidneys, lungs, blood vessels, brain). Because these diseases are often complex, they benefit from the care of an expert. Only rheumatologists are experts in this field of medicine. Continue reading →