After 30 years as a professor of dentistry at the Universidád Autonomous de Nuevo Leon in Monterrey, Dr. Zambrano has elected to practice privately.

He has taught many of the dentists in Nuevo Progreso all they know about dentistry. He brings his expertise and sense of humor and humility to the border, where he has practised since 2003.As a professor he wrote numerous papers and presented procedures at many conferences attended by dentists from all over the country. His expertise was acknowledged by the Colegio Nacional de Cirujanos Dentistas (a national dental society) as the Dentist of the Year for the state of Nuevo Leon in 2000. While he doesn't claim a specialty, Dr. Zambrano has the knowledge and ability to render various types of dental treatments, including: cosmetic (esthetics), dental surgery, endodontics, reconstructive treatments, Laser treatments, and prepares all types of crowns, dentures, and bridges.