The correct DEA number for Dr. Andrea J. Shedlock, who was Dr. Andrea Costello when she requested her DEA number before she was married, is _________.

A, B, F, or M will be the first letter of a physician’s DEA number. The first letter of the physician’s last name at the time he or she applied for the DEA number will be the second letter. DEA numbers are required as a result of the Controlled Substances Act.