The Certified Occupational Therapist Assistant (COTA) treats the patient with a specific treatment program designed by the occupational therapist, under the guidance of the occupational therapist and physician. The COTA is also responsible for coordinating any changes in the patient’s condition to the occupational therapist, working toward maximizing the patient’s functional level. The COTA has contact with patients in the home setting and understands and demonstrates appropriate behavior when interacting with patients in all populations.