GreeneStone Healthcare Corporation (OTCBB/QB:GRST) operates medical and healthcare clinics in Ontario, Canada. GreeneStone's clinics serve to add overflow capacity to an increasingly stretched provincial healthcare system, and provide private alternatives to publicly available healthcare services. Its four medical clinics (three in Toronto, along with a facility in Muskoka, Ontario) offer various medical services, including addiction treatment, endoscopy, minor cosmetic procedures, and executive health care services. The company currently has more than 60 employees and is based in Toronto, Ontario.