Definition and synonyms of SOLE from the online English dictionary from Macmillan Publishers Limited.
DEA number. A DEA number (DEA Registration Number) is a number assigned to a health care provider (such as a medical practitioner, optometrist, pharmacist, dentist, or veterinarian) by the U.S. Drug Enforcement Administration allowing them to write prescriptions for controlled substances.
A good resource for online NPI number and DEA number searches is the ERX network, which does require the pharmacy to subscribe to the service. Also, health care providers cannot refer their patients to other practitioners who are in the insurance system, without a valid number.