Mehmet Cengiz Oz, best known as Dr. Oz, is a Turkish-American cardiothoracic surgeon, author, and host and commentator for the syndicated daily television program focusing on medical issues/personal health, The Dr. Oz Show.
Oz first appeared on the The Oprah Winfrey Show in 2004, and later on Larry King Live and other TV programs. In 2009, Winfrey's Harpo Productions and Sony Pictures launched The Dr. Oz Show.