ABC News reports the Yorkville gastroenterologist who performed Joan Rivers' endoscopy, during which the comedian went into cardiac arrest, has stepped down.

Dr. Lawrence Cohen was asked to step down from his position by the board of Yorkville Endoscopy, where he served as medical director. Though he is not being blamed for Rivers' death, he reportedly allowed an ear, nose, and throat specialist who was unaffiliated with the clinic to examine Rivers. The unauthorized specialist was also present at the time of the endoscopy.

According to ABC News, Dr. Cohen and the specialist have not been accused of wrongdoing, but the State Health Department is investigating.

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