the address listed is old. Dr. Sampson moved to Greenville ohio around three years ago. He now is located near Wayne Hospital and the North side of the Darke County Fair Grounds. he provides a good quality care. Easy to schedule appointments. Open Tuesdays until 7pm(good for those who work 9 to 5 type jobs) He has NO weekend hours and closed on Wednesdays. He does NOT take credit card. Long waits in the office to see the doctor, but when you see him you get all of his attention Expect to leave 90 to 180 minutes or more after your scheduled appt.