Board certified dermatologist, osteopathic physician, and the owner of Kirby Dermatology. He is also a medical textbook and dermatological journal article author and spokesman. He is also known for his appearances on reality television with numerous appearances on medical television programing, including multiple seasons of Dr. 90210, The Doctors and on QVC.
In 1995, Kirby received his degree in Biology from Emory University. He worked as a medical correspondent for the show Extra!. After earning notoriety for his appearances on a variety of television, he opened his own dermatology practice in Hermosa Beach.
In addition to his work on medical television, he is also known for winning both the hit CBS reality show Big Brother 2 and The Price is Right.
He was born and raised in Florence, Italy.