I do not ever trust a medical bill. Too many errors over the years and they rarely give you the full picture and often no picture of what has happened.
Get your EOB, explanation of benefits, from your health insurance provider. If a big company, I am sure that they have a member portal that you can log into and see your EOB online. You will see exactly what services the doctor provided, what the doctor attempted to charge, what the insurance company set as the allowed or negotiated charge, what the insurance company paid on your behalf, what you may have paid upfront, and what you still owe at the time of EOB (this part can get out of sync if you have paid any or all since the EOB was published).
Take time to really read the EOB and then question anything and everything that seems out of line. You can question the doctor and the insurance company. Sometimes you have to do both to get the full picture.
In the end, you may find, as others have said here, that the charges are legitimate (which is different from you like them). If legitimate, you need to pay it and learn from this. You can spend time researching costs up-front so that you do not face surprises in the future. Now, I will warn you that this is not yet as easy as it should be but researching cost and value upfront is a growing trend and it is getting better each year so get used to doing it now.