Justin Chambers is 54 years and 4 month(s) old. He was born in 11 Jul, 1970. Born as Justin William Chambers, the American actor took birth on the 16th of January 1970, which makes him 46 years of age. Justin is an Aquarian and is also a former American fashion model. Speaking more about his biography he is famous for his role of Alex Karev in the ABC medical drama, Grey’s Anatomy.