www.DEAecom.gov has a number of on-line resources to assist CSOS customers with program enrollment and certificate retrieval. Additionally, many frequently asked questions have been answered on our Q & A's page.
Our support staff is available 8:00 AM through 6:00 PM (Eastern Time) Monday through Friday. If you reach our voicemail, please leave a message and we'll return your call as soon as possible.
Postal Mail:
Standard mail (preferred):
Drug Enforcement Administration
Sterling Park Technology Center/CSOS
8701 Morrissette Drive
Springfield, VA 22152
Overnight or express mail only:
Drug Enforcement Administration
Sterling Park Technology Center/CSOS
8701 Morrissette Drive
Springfield, VA 22152
Use the overnight/express mail address for all UPS, FedEx, DHL, and Priority Mail USPS packages.