Dr. Klein is the Director of Advanced Implant Dentistry and Oral Restoration, in the New York area, where he maintains a private practice limited to Prosthodontics and Oral Implantology. He has co-authored a book, The Atlas of Oral Implantology, as well as numerous book chapters and articles on implant dentistry. Dr. Klein speaks nationally as well as internationally on a variety of topics in Oral Implantology.

Dr. Klein is the Chief Technology officer at KeyStone Dental Group where he has simplified Full-arch solutions by shortening the workflow and removing the technical complexity from immediate provisionalization through Final restoration.