An attending physician is a doctor responsible for providing care for a patient in a hospital or other clinical facility. Every attending physician is board-certified and has completed their residency training. As the highest level of physician, the attending physician has final responsibility for all patient care, even if someone under them provides the care.
In addition to providing patient care, the attending physician may also be responsible for supervising and teaching residents, interns, or medical students who also play a role in providing patient care.
Depending on the field of medicine someone pursues, the road to attending physician may take seven or more years, with some specialties taking 14+ years of post-undergraduate studies and training.