Answer: an emergency room.
Explanation:
An emergency room is a space in hospitals or health care centers dedicated to the care of patients in a medical emergency, without prior appointment. This medical emergency may or may not endanger the patient's life; therefore, emergency rooms are usually equipped with medical and personal equipment for all types of emergencies.
People who don't have medical insurance generally attend the emergency room because it guarantees that they will be treated without a prior appointment because by law they cannot stop caring for a patient that requires medical attention.
I hope this information can help you.