What is the structure of a DEA number?

• A. 2 letters, 6 numbers
• B. 1 letter, 7 numbers
• C. 2 letters, 5 numbers, 1 symbol
• D. 3 letters, 4 numbers

Answer: (A)

A DEA number, or Drug Enforcement Administration number, is structured with 2 letters followed by 7 numbers. This format is designed to uniquely identify healthcare providers and organizations that are allowed to prescribe controlled substances.

The first letter of the DEA number represents the type of registrant. For instance, if the letter is 'A', it denotes a practitioner such as a physician, while other letters represent different types of registrants like hospitals or pharmacies. The second letter is typically the first letter of the registrant's last name, which helps to further identify the provider.

The subsequent 7 digits are a unique numerical identifier. This numbering system includes a specific calculation (the "check digit" algorithm) that ensures the DEA number is valid and helps prevent counterfeit numbers.

The structure is important for ensuring accurate prescription and medication management, as it serves both accountability and regulatory compliance within the practice of pharmacy and healthcare.