Joan Rivers — Personal Doc During Fatal Procedure — ENT to the Stars

EXCLUSIVE

Joan Rivers‘ personal doctor who was effective on Joan when she stopped breathing is Dr. Gwen Korovin, who treats the largest celebs in the world … multiple sources tell TMZ.

We’re told Dr. Korovin was not authorized to do medicine at Yorkville Endoscopy focal point. CNN has reported Joan’s personal physician took a selfie while performing a biopsy on the comedienne.

Dr. Korovin’s patient list reads like a celeb who’s who. Her patients include Celine Dion, Lady Gaga, Hugh Jackman, John Mayer, and Brooke Shields.

Dr. Korovin’s Facebook page has a pic of the doc in her office with pics of her celeb patients lining the walls.

The doctor has done interviews in which she says she brings a black bag to the dressing rooms of A-list stars and administers “on-the-spot treatment.”

We reached out to Doctor Korovin’s office and were told, “We do not note on matters related to patients.”