Visiting SAMHSA headquarters? Find directions, transportation, and parking information to help you plan your trip. SAMHSA Headquarters Substance Abuse and Mental Health Services Administration 5600 Fishers Lane Rockville, MD 20857 Hours of Operation Monday - Friday 8:30 a.m. - 5:00 p.m. Directions and Transportation Directions to SAMHSA via MapQuest Take Metro to Twinbrook Station on the Red line. It is a half-mile walk to 5600 Fishers Lane. Visitor Parking Visitor parking permits are distributed on a first-come, first-served basis. Visitors can also pay to park in the public garage at 5625 Fishers Lane. Parking requests must be made at least 24 hours in advance. Email requests to email@example.com and include the following information: Date parking is needed Time parking is needed Visitor name Visitor email address Vehicle tag number and state Purpose of visit Escort’s name and phone number Bicycles There is one 35-bicycle rack in the garage. Racks are also available in the East Lot along Parklawn Drive. Motorcycles and Scooters There are spaces for motorcycles and scooters in the building parking lot.