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Which of the following is a correct DEA number for a Dr. Andrea J. Shedlock, who was Dr. Andrea Costello when she requested her DEA number before she was married?

A AC1234563

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