Change Insurance Providers

I am trying to get tested for ADHD and cannot find a testing center withing Cigna's network. This would cost me over $3,000 since none of it would be covered by Cigna. I currently see a therapist and still have to pay over $100 per session after insurance. Even for normal checkups at my PCP costs me about $200 after insurance, then an additional payment of over $100 for lab testing after insurance. Cigna barely covers anything and in some cases they won't cover costs for significant medical treatment because they don't deem it as a necessary procedure, even though the worker lives in constant pain.