DEA Registration Number

Key facts

Issued by

Drug Enforcement Administration (DEA), Diversion Control Division

Legal basis

Controlled Substances Act; regulations at 21 CFR Part 1301

Format

2 letters followed by 7 digits, the last of which is a check digit

Practitioner renewal

Every 3 years

Geographic scope

Tied to a state; practitioners register in each state where they practice

What is a DEA registration number?

The Controlled Substances Act requires anyone who manufactures, distributes, dispenses, prescribes or researches controlled substances to register with the Drug Enforcement Administration (DEA). Physicians, dentists, veterinarians, nurse practitioners and physician assistants register so they can prescribe or administer controlled substances, within what their state allows.

DEA registration depends on state authority. A practitioner must first be authorized to handle controlled substances under the law of the state where they practice, and the registration is specific to that state. Some states also require a separate state controlled substance registration.

How a DEA number is structured

A DEA number has three parts:

The check digit is found by adding the first, third and fifth digits, adding twice the sum of the second, fourth and sixth digits, and taking the last digit of the total. A number that fails this test is invalid, but passing it does not prove that a registration exists or is active.

• First letter: the registrant type. Many practitioner registrations begin with A, B or F, and registrations for mid-level practitioners such as nurse practitioners and physician assistants begin with M.
• Second letter: usually the first letter of the registrant's last name or business name.
• Seven digits: six digits followed by a check digit.

Why DEA registration numbers matter

Pharmacies require a valid DEA number on controlled substance prescriptions, and credentialing teams verify DEA registration before granting privileges or network participation. Registration status and the schedules a practitioner may handle are part of diversion controls.

Registration rules also track policy changes. The Consolidated Appropriations Act, 2023 eliminated the separate DATA waiver, known as the X-waiver, that practitioners had needed to prescribe buprenorphine for opioid use disorder, so practitioners with a registration covering Schedule III can now prescribe it where state law allows.

Common misconceptions about DEA numbers

A DEA number is not a general provider identifier. Some payers and pharmacies once used it to identify prescribers, but the NPI is the HIPAA standard, and the DEA has discouraged using registration numbers for purposes unrelated to controlled substances. DEA numbers do not appear in public provider datasets such as NPPES files.