Dr. Derek Collins, MEd, CADC, CAMS-II, CSTAS Counseling, Psychology 2759 Delk Rd Suite 2425Marietta, GA 30067 (404) 471-3258 Website About Dr. Derek Collins, MEd, CADC, CAMS-II, CSTAS Alt. Address: Diversion Center 561 West Pike Street Suite 206 Lawrenceville, Georgia 30046 Alt. Phone: (404) 781-7468