It typically takes 8 years of post-secondary education to become an anesthesiologist. This includes 4 years of undergraduate study, followed by 4 years in medical school. After completing medical school, a physician must complete at least one year of internship and three additional years of specialized training in anesthesiology as part of a residency program. During this time, the physician will gain experience working with patients under the supervision of experienced physicians and learn how to administer anesthesia safely and effectively. Upon completion, they are eligible for board certification from the American Board of Anesthesiology (ABA).