Locations Access Center – Intake Appointments, Information & Referrals 770-422-0202 This is a call center only. Administrative Offices 3830 South Cobb Drive, Suite 300 Smyrna, GA 30080 Phone: 770-429-5000 Behavioral Health Crisis Center 1758 County Services Parkway, SE Marietta, GA 30008 Outpatient Services 1650 County Services Parkway Marietta, GA 30008 Child and Adolescent Services George W. Hartmann Center 729 Lawrence St Marietta, GA 30060 Specialty Services (The Circle) 6133 Love St. Austell, GA 30168 Intellectual/Developmental Disabilities 2051 Greenridge RD. SE Smyrna, GA 30080