Lisa Oz is an American author and radio and television personality who has been an occasional co-host of The Dr. Oz Show. She has appeared on the Oprah and Friends XM radio telecasts. Oz has authored or co-authored several books, including the You: The Owner's Manual series, and is host of The Lisa Oz Show.

Mehmet Cengiz Öz, also known as Dr. Oz, is an American television personality, physician, author, professor emeritus of cardiothoracic surgery at Columbia University, and former political candidate.