Doc who performed on Joan Rivers denies wrongdoing: lawsuit

The doctor who allegedly posed for pictures while performing an unauthorized procedure on Joan Rivers and then fled when the legendary comedian’s essential signs started plummeting is breaking her silence — and denying she did anything incorrect.

Gwen Korovin, a laryngologist who’s been dubbed “the patron saint of Broadway singers and actors,” says she “was uninformed of any pictures being taken” during her ill-fated laryngoscopy of Rivers last…