Peter Rost, M.D., is a former Pfizer Marketing Vice President providing services as an expert witness, speaker and writer. Judge Sanders: "The court agrees with defendants' view that Dr. Rost is a very adept and seasoned expert witness." According to Fortune "[Rost] is a force to be reckoned with. And he is part of a larger phenomenon that is forcing Big Pharma into a new era of accountability." Email: rostpeter (insert "@") hotmail (insert ".") com.