​Which of the Following Is Not One of the Necessary

​Which of the following is not one of the necessary pieces of information to have before calling to follow up on a delinquent insurance claim?

A) ​the amount of copay received from the patient
B) ​your practice's tax identification number
C) ​the patient's name,identification number,and group name or number
D) ​if the patient is not the insured,the insured's (e.g. ,spouse's) name