He is a former team physician for the L.A. Raiders professional football team, and a book he wrote on his experiences there was the basis for the film “Any Given Sunday.” His current practice specializes in obesity-related issues. Dr. Huizenga is the physician who interviews each contestant at the beginning of the season to go over their health risks. He has been interviewed on several network and cable news shows as a health expert and he has been a writer, correspondent and advisor for several other TV programs.