Keywords: Occupational Therapist, Occupational Therapy Assistant, Pediatric Occupational Therapist, COTA, Occupational Therapy, Certified Occupational Therapy Assistant, Occupational Therapist PRN, Home Health Occupational Therapist, Occupational Therapist Assistant, School Based Occupational Therapist The certified occupational therapy assistant performs only those services planned, delegated, and supervised by the registered occupational therapist within their scope of practice.