SAMHSA has two mailing addresses, one for US Postal Mail, and one for package deliveries (FedEx, UPS, Airborne Express, DHL, etc.): U.S. Post Service Address Substance Abuse and Mental Health Services Administration 1 Choke Cherry Road Rockville, MD 20857 FedEx, UPS, Airborne Express, DHL, etc. Substance Abuse and Mental Health Services Administration 1 Choke Cherry Road Rockville, MD 20850 |