Dr. Eisig is Chief of the Hospital Dental Service at NewYork-Presbyterian Hospital, the George Guttmann Professor of Clinical Craniofacial Surgery and Director of Oral and Maxillofacial Surgery at the hospital, and Chair of Hospital Dentistry at Columbia University's College of Dental Medicine.

He received his dental degree from New York University and then completed his general dental internship and residency in oral and maxillofacial surgery at Long Island College Hospital in Brooklyn, and New York Hospital - Cornell Medical Center, respectively. Dr. Eisig received additional training as the maxillofacial surgery fellow at Shock Trauma at the University of Maryland Hospital.

Dr. Eisig is the Section Editor for Oral and Maxillofacial Surgery of the Cleft Palate/Craniofacial Journal and is a Diplomate of the American Board of Oral and Maxillofacial Surgery. He volunteers abroad by treating patients with cleft lip and palate on Healing the Children missions to South American countries. He practices full-scope oral and maxillofacial surgery, with a particular interest in orthognathic surgery (corrective jaw surgery), craniofacial and cleft palate surgery, maxillofacial pathology and reconstruction and implant surgery, and pediatric oral and maxillofacial surgery.

Dr. Eisig's principal research interests are in stem cell cranofacial regeneration and he has numerous publications in peer reviewed journals and book chapters.