An ear, nose and throat specialist was in the clinic operating room where Joan Rivers underwent a procedure last month — and went into cardiac arrest — even though the doctor was not authorized to practice medicine in the clinic, The New York Times reports. 
 

Citing unnamed sources familiar with the case, The Times said E.N.T. specialist was brought into the operating room by Rivers’s gastroenterologist, the medical director of the Manhattan clinic. The specialist examined Rivers’s voice box twice, once before and once after the gastroenterologist performed an upper endoscopy — a procedure that used a tiny camera to look down her throat into her digestive system.
 

The sources said they did not know the E.N.T. specialist’s name. But one said she was not authorized to work at the clinic, Yorkville Endoscopy on East 93rd Street. Under state and federal regulations, such clinics must review the credentials and qualifications of physicians before permitting them to perform procedures.
 

The New York State Health Department is investigating Rivers’s treatment. Neither the gastroenterologist nor the E.N.T. specialist has been accused of wrongdoing.