ABS Communication/Ordering Center is and can be reached by email at ABS.CommunicationCenter@montgomerycountymd.gov or call the Communication Center at 240.777.1900. Normal operating hours are as follows: Monday - Friday 8:00 AM to 4:30 PM. For Licensure, Regulation, and Education (LRE), please call 240.777.1999 for assistance Monday - Friday 9:00am - 5:00pm. ABS is located at 201 Edison Park Drive, Gaithersburg, MD.