otherwise known as narth. the therapy aimed at changing sexual orientation has been used for decades as a way to turn potentially gay children straight. >> every day i would hear this is a choice. this could be fixed. >> reporter: did you believe that? >> i never believed that. i know i'm gay just like i know i'm short and i'm half hispanic and i never thought those facts would change. it is part of my core fundamental identity. so the parallel would be sending me to tall camp and saying if you try really hard, one day you can be 6'1 ". >> reporter: ryan says he was treated by joseph nickleosi who today is still associated with narth. >> the refrain was the religious one this is something that makes god cry that this is something your family doesn't want for you. >> reporter: at his office, outside los angeles, we asked if he remembered treating ryan kendall about 14 years earlier. >> i'm not familiar with the name at all. >> reporter: his parents have provided bills from your office, there have been checks wr