A medical assistant internship involves training to perform the duties of a medical assistant in a clinical setting. Your responsibilities can vary from program to program, but most interns assist staff in providing health care services for patients. As a medical assistant intern, you take patient vital signs, collect specimens, record information on a records system, and assist the physician or nurse during an exam or treatment. Some assistants clean and disinfect rooms and equipment after use and manage supply inventory in the clinic and exam rooms. Interns work under the direct supervision of professional nurses, physicians, and medical assistants.