31-year-old Brayan Alvarez Ortiz was arraigned Thursday following his arrest at his Guilford County home.
Authorities say the assaults occurred in the hospital's recovery room after the victims had undergone surgery.
Prosecutors also revealed that Alvarez Ortiz is living in the U.S. on a green card, raising the possibility of new immigration issues.
UNC Health Rex said in a statement obtained by ABC11:
"UNC Health Rex cannot comment on specific patients or employees due to privacy laws. In addition, this is an ongoing law enforcement investigation. We are deeply saddened and outraged by the nature of these allegations. Our hearts are with the patients involved and their families. We take all allegations of inappropriate behavior seriously. In those situations, we conduct our own investigations and cooperate with law enforcement. This individual has been terminated and is no longer employed by the organization. Our highest priority is always the health, privacy, well-being, and safety of our patients. We are grateful for law enforcement and the N.C. Board of Nursing for their cooperation in this matter. "
Alvarez Ortiz is being held without bond and is due back in court on Monday.