Dr. Hanowell's office is located in suite 403 in the Champlain building at 6410 Rockledge Drive in Bethesda Maryland. The office is opened from 8:30AM until 4:30 PM Monday through Friday. Dr. Hanowell has office hours on Monday, Wednesday and Friday mornings. Patients are seen by appointment only. Appointments may be made by calling 301-897-5450 during working hours. While Dr. Hanowell participates with many insurance companies, patients are reminded that they are responsible for their own bills, which are due at the time of the appointment unless prior arrangements have been made.