Understanding insurance coverage is tricky.   “In-Network”, “Out of Network”, “Allowable”, “Write –off”….yada yada yada. The terminology alone is enough to cause a headache, and all you REALLY want to know is how much is it going to cost you to get rid of said a headache? This is the million dollar question. And, depending on your healthcare plan, it can feel like it cost you a million dollars. In Network, doctors have entered into…