Dr. Sherri Tenpenny is a board-certified osteopathic medical doctor from Cleveland, Ohio. Dr. Tenpenny is a practicing physician and cares for patients 2.5 days per week. Dr. Tenpenny is an internationally known expert on the problems associated with vaccines. Students from all over the world have become confident parents and articulate activists through her online educational courses, found at Courses4Mastery.com. As the “Voice for the Health Freedom,” Dr. Tenpenny is an outspoken advocate for free choice in healthcare, including the right to refuse vaccination.