DEA registration numbers for mid-level practitioners generally begin with which letter?

Mid-level practitioners, such as nurse practitioners and physician assistants, are assigned DEA registration numbers that begin with the letter 'M.' This designation specifically indicates that the practitioner has the authority to prescribe controlled substances within the scope of their practice under federal law.

In contrast, other letters are used for different categories of registrants. For instance, the letter 'A' was historically used for practitioners who were involved in research or were registrants before the changes in the classification of practitioners. The letter 'B' is not commonly utilized for mid-level practitioners, and 'C' is often reserved for those engaged in research or for institutional registration numbers but does not apply to mid-level practitioners.

Understanding the significance of the 'M' designation is essential, as it helps differentiate the levels of practitioners and the extent of their prescribing authority, ensuring proper handling and compliance with controlled substances regulations.