Creativity and collaboration. That's how Plumstreet works with clients. client list The Downing clinic http://www.thedowningclinic.com The Downing Clinic has over 20 years experience treating their patients. Dr. Downing and Dr. Kovalcik wanted to bring their clinic to the web, and did so with help from Plumstreet. With a light, clean look and an informative style, the site brings the user a wide variety of information on natural health issues.