Gregory M. Knopf, M.D., has been a family practice physician for 30 years and is the founder and medical director of the Gresham-Troutdale Family Medical Center. He is a graduate and Clinical Associate Professor of Family Medicine at Oregon Health Sciences University. Dr. Knopf has a particular interest in the treatment of anxiety and depression. He speaks across the country to professional and general audiences on the topic and has been involved in clinical research.