- Caring for people the way nature intended! The Champlain Center for Natural Medicine was founded in 1990 by Dr. Bill Warnock, ND. Located in Shelburne, we are the oldest naturopathic clinic in Vermont. Below you will find links to information about each doctor at our clinic and contact information. Simon Frishkoff, ND Lorilee Schoenbeck, ND Bill Warnock, ND Phone:(802) 985-8250 Fax: (802) ...www.vtnaturalmed.com