He graduated from Autonomous University of Guadalajara Faculty of Medicine and Tulane University School of Medicine and then he performed his residency at New York Hospital and a hospital affiliated with New York University (NYU). Dr. Ernstoff has a 2.0 out of 5 star average patient rating. He is an in-network provider for United Healthcare Platinum, United Healthcare Compass, and United Healthcare Navigate, in addition to other insurance carriers. His professional affiliations include UPMC Shadyside, UPMC McKeesport, and UPMC Presbyterian.