Dr. David Egilman, a physician and expert witness who, over a 35-year span, gave testimony in some 600 trials involving corporate malfeasance, resulting in billions of dollars in awards for victims and their survivors, died on April 2, at his home in Foxborough, MA. He was 71.

A dogged researcher, he dug up incriminating evidence showing that, in many cases, drug companies knew the risks involved with putting a new medication on the market, but went ahead anyway.

In Cincinnati, where he worked with the U.S. Public Health Service, many of his patients were industrial and mining workers who had developed medical conditions after years of working in unsafe conditions. The experience cemented his determination to stand up against medical injustice. His company, Never Again Consulting, was a nod to his father’s experience during the Holocaust as well as the importance of not allowing the horrors of Nazi medical experimentation to be replicated.