Which of the following BEST describes "established patient"?

A. Review and/or assessment of a patient for the purpose of ascertaining a clinical judgment of the patient's diagnosis, current health status, and/or condition
B. Identification of an appropriate clinical treatment for the purpose of promoting the patient's health, recovery, and wellness
C. A patient who has not received any professional or clinical care from the physician, or another physician of the same specialty or subspecialty who belongs to the same group practice during the three years prior to the visit in question
D. A patient who has received previous healthcare services from a specific clinician or facility within the last three years

D