David George Gratzer is a physician, columnist, author, Congressional expert witness, and a senior fellow at both the Manhattan Institute and the Montreal Economic Institute. Though he has written essays on topics as diverse as obesity and political campaigns, he is best known for his first book, published by ECW Press, when he was just 24: 'Code Blue: Reviving Canada's Health Care System'. That book won the Donner Prize established by the Donner Canadian Foundation and was a national bestseller in his native Canada. Wikipedia*
On the C-SPAN Networks:
David Gratzer has one video in the C-SPAN Video Library; the first appearance was a 2009 House Committee.