Dr. Sinclair received his N.D. degree from Southwest College of Naturopathic Medicine in Tempe, AZ and completed his undergraduate work at the University of Colorado, Boulder.

He is a member of the American Association of Naturopathic Physicians and licensed acupuncturist. He has been published in and served as an associate editor for the peer-reviewed journal, The Alternative Medicine Review. In his Frederick, MD clinic, Dr. Sinclair  specializes in natural medicine and integrates clinical nutrition, botanical medicine, homeopathy and Chinese medicine into comprehensive individual health plans that work to restore the body's natural balance and vitality.