http://redlib.bunny5exbgbp4sqe2h2rfq2brgrx3dhohdweonepzwfgumfyygb35wyd.onion/r/LifeProTips
So if the billing issue happens you now have ammo to fight your insurance company to correct the billing issue. They have to honor it. Also bonus tip, if you are seeing a provider within a block radius of the hospital, they will use the hospital as the billing provider and trust me it will cost you way more.