Dr Geissberger has practiced in Marin County (San Francisco) since 1991. He splits his time equally between his private practice and educating practicing dentists. He is an adjunct clinical professor in the Department of Preventive and Restorative Dentistry and served as the chair of the Department of Integrated Reconstructive Dental Sciences at the University of the Pacific, School of Dentistry for 15 years. He has maintained a faculty appointment continuously since 1991. Dr Geissberger has been awarded fellowship in the International College of Dentists, American College of Dentists, and the Pierre Fauchard Academy. He has won several teaching awards and completed a fellowship with the American Dental Education Association’s Leadership Institute. He has served as the president, president-elect and vice president of both the Supreme Chapter of Omicron Kappa Upsilon and University of the Pacific’s Alumni Association. Dr Geissberger is a researcher and author in the areas of dental materials, contemporary fixed prosthodontics, and esthetic dentistry. He has lectured on adhesive dentistry, cosmetic dentistry, photography, ceramic, fixed prosthodontics, and treatment planning.