Try Huntington Hospital in Pasadena. I got off Heroin addiction from there
I will support you in any way that I can. I am not in L.A., but I used to live there. I think if you can taper off by taking fewer and fewer of the pills, it will help. It may not be as hard as you think. Find a Narcotics Anonymous group and go to the meetings. It's always better to be around people who have gone through the same experience.
Also, get the vitamin support you need. High dose Vitamin C, a good B complex, calcium, magnesium and zinc (Trader Joe's has the best prices/quality) Sleepy time tea and melatonin for help sleeping.
Best of luck to you and God bless you for wanting to get off the pills. I'm just starting my journey, too.