From Arianna Huffington, who was in Vail when this event occured:
Cheney Checks Into Vail Hospital...
Vice President Dick Cheney was taken to the cardiac unit of the Vail Valley Medical Center Friday. Contrary to Associated Press reports that he went to see orthopedic surgeon, Dr. Steadman, at the Steadman Hawkins clinic for a knee injury, Vice President Cheney passed through the Steadman Hawkins clinic and the Colorado Mountain Medical Center to get to the cardiac unit to see Dr. Jack Eck and his team. The Vice President checked into the hospital under the name of Dr. Hoffman.