<prompt> Human: My wife is pregnant and we have been going to the doctor for regular check ups for the last few months. Nothing out of the ordinary. Right now shes about 25 weeks along.Weve been getting medical bills but Im having trouble verifying what theyre for, and Ive read that medical offices are notorious for overbilling patients. Im getting billed by 3 different places:1. 1 lab we owe 1102. Another lab we owe 10173. OBGYN which is 1221The lab reports have no useful information identifying services provided, only saying i.e., Laboratory Test 1, PR1. Also it looks like insurance didnt pay for anything? Our insurance is UnitedHealth Choice Plus.Also the OBGYN office has multiple lines of charges on the same date again, no description. So my question is:1. How do I know there arent any mistakes on the bill - can I ask them to itemize each expense?2. How can I tell whether insurance should be paying or not paying?Anything else i should know or be wary about? Thanks!  <response>: Keep a spreadsheet every time you have a doctor visit. Date, Doctor, reason or things that happened. And keep the checkout paper they give you. Then wait for the EOB and try to match up dates and doctors with the EOB. Then match up bills with the EOB You can always call the doctors office to verify what what happened at the appointment. 