Dr. Eisig is the George Guttman Professor of Clinical Craniofacial Surgery and Chair of the Section of Hospital Dentistry and Director of Oral and Maxillofacial Surgery at Columbia University's College of Dental Medicine and Chief of the Hospital Dental Service at New York-Presbyterian/Columbia University Irving Medical Center. He is also Chief of the Hospital Dental Service at the Morgan Stanley Children's Hospital of New York-Presbyterian. 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 then completed a fellowship in oral and maxillofacial surgery 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 has a particular interest in orthognathic surgery, craniofacial and cleft surgery, maxillofacial pathology and reconstruction, 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. Dr. Eisig and his faculty have active collaborations with the Laboratory for Stem Cells and Tissue Engineering of Columbia Univeristy/Engineering directed by Dr. Gordana Vunjak-Novakovic and with the laboratories of Dr. Chang Lee and Dr. Millie Embree.