Dr Martin is an extremely knowledgeable and pleasant orthodontist that always has tons of patience and understanding for my daughter. His personality seems to instantly put her at ease and he always explains all the procedures to me with detail. Unlike other professionals, his office staff is professional and courteous as well. They always take time to help me with whatever I need when I call, weather it concerns a change of appointment or information needed for insurance. Thanks Dr. Martin! P. S. His new address is 2410 Evergreen Rd Suite 101, Gambrills, MD21054