Final answer:
Dr. Rodriguez specializes in internal medicine, which differs from orthopedists who focus on the musculoskeletal system and rheumatologists who treat joint and bone disorders.
Step-by-step explanation:
The doctor mentioned, Dr. Rodriguez, is a specialist in internal medicine. This is a branch of medicine that deals with the diagnosis, treatment, and prevention of nonsurgical conditions in adults. While Dr. Rodriguez focuses on internal medicine, other types of specialists include orthopedists and rheumatologists. An orthopedist is a physician specializing in the musculoskeletal system, often treating conditions with medications, exercises, braces, or surgery. On the other hand, a rheumatologist deals with the diagnosis and treatment of joint, muscle, and bone disorders, such as arthritis and autoimmune diseases.