A former member of Pfizer Inc.’s speakers’ bureau and doctor from Massachusetts has been accused of starting “one of the biggest research frauds in medical history” as per The Day of New London. He has also agreed to plead guilty as per a Massachusetts newspaper.

Dr. Scott Reuben was charged with health care fraud on Thursday in federal court in Boston as per the US Department of Justice. He is accused of faking medical research studies which also include those which were published in medical journals.

He is accused of receiving a $75,000 grant from Pfizer to research the effectiveness of the pain medication Celebrex for a 2005 study, reports the Day.

His research indicated that painkillers have post-surgery benefits but no patients were actually enrolled in the study as per the US Department of Justice news Release.

Reuben was also the chief of acute pain at Baystate Medical Center in Springfield, Massachusetts. The Day also reports that the hospital discharged him last march after an audit had revealed that he had been inventing data from 13 years.