Anesthesiologists are pain managers. They oversee pain medications, and administer them during surgeries; we mostly know anesthesiologists as the ones who "put us to sleep" for surgery, and administer a wide range of pain medicines. Though you're unlikely to see an anesthesiologist outside of the hospital, you'll work with one before and after surgery to make sure you're not in pain and your body is healthy overall. Some anesthesiologists do work with patients in the maintenance of chronic pain, and other specialize in different areas of medicine like pediatrics or obstetrics.