Hello, Welcome to Just Answer and thanks for your question. The only way to find a provider who will accept your insurance is to call your insurer. The number should be on your insurance card. They can provide you with a list of doctors, clinics, hospitals, labs, etc. that accept your insurance. There is no other way to find a participating provider.
Champva uses Tricare/Humana providers for the most part. Here is a link to get you started: