Looking for naturopaths who could treat psoriatic arthritis in Sacramento without Enbrel?

My young son is on Enbrel for arthritis. His uncle had psoriatic arthritis also and had been on Enbrel for 3 years, then had cancer 3 months ago. He died last week from it. His doctors thought Enbrel caused the cancer. We're looking for doctors to give alternative treatment without Enbrel.