Gerald W. Grass, MD is an internationally known and respected physician who has been using ketamine in treatment of chronic pain and depression for over 20 years. He has established the ketamine infusion program and has developed the RESTORE Infusion, which is an improvement of the basic ketamine infusion. He has more direct patient clinical experience providing ketamine infusion therapy than any other physician in the United States and is the ultimate goal of the ketamine infusion therapy.