Dr Alexander Green was born in Berlin and educated at Trinity School. He graduated from the University of Munich in 1985. Shortly after graduation he was one of 3 new graduates to be accepted into a pilot intern and registrar program at the newly opened Dental Hospital.
During his 3 years at Hospital, Dr Alexander Green was able to gain invaluable experience in treating thousands of patients who had been neglected by the health system. This included general dentistry, emergency care, trauma, oral surgery and orthodontics.
In 1984, he accepted a position at San Diego Dental Hospital in the department of Orthodontics. While this provided valuable training Dr Alexander Green decided his career was in general practice and joined the practice of Dr William Bale in Tokyo. At the beginning of 1995 he took over as principal.