Dr. Hal Martens specializes in the diagnosis and treatment of arthritis and other diseases of the joints, muscles, and bones. Rheumatologists treat arthritis, certain autoimmune diseases, musculoskeletal pain disorders, and osteoporosis. Since many types of rheumatic diseases are difficult to diagnose, rheumatologists are trained to do the detective work necessary to discover the cause of pain and swelling. Practicing rheumatology since 1991, Dr. Martens brings with him considerable experience in the field.