On the statement, look to the “Service Date/Information” column of the itemized portion of the statement. This should on the left hand side. This column is where all payments (made both by insurance and by you) are accounted for, as well other adjustments. Insurance company payments are labeled with the company’s name – for example “United Healthcare payment” or “Insurance payment.”
The amount the insurance company paid is also shown two columns over from this labeled “Insurance Payment”