The Role of the OTA/PTA in Wheelchair Provision, Part 1 Recently, a therapist provided a suggestion to me to write a Clinical Corner article on the role of the therapist assistant in wheelchair provision, from referral to discharge. What a great topic! Having worked in a number of different clinical settings prior to joining Sunrise Medical, my personal experience has been that the role of the therapist assistant with respect to wheelchair provision varies depending upon the practice setting and the size of the institution or agency in which one works. 2016-05-25 Keep Reading