NightHawk Radiology Holdings, Inc. (NightHawk) provides radiology solutions to radiology groups and hospitals throughout the United States. The Company provides suite of solutions, including professional services, business services, and its workflow technology. NightHawk’s team of United States board-certified, state-licensed and hospital-privileged physicians located in the United States and around the world provide services around the clock includes seven days a week, for approximately 780 customers. Its team of American Board of Radiology-certified, United States state-licensed and hospital-privileged radiologists uses its workflow technology to provide professional services to its customers in the United States. As of December 31, 2008, the Company provided professional radiology services to approximately 780 radiology practices serving approximately 1,500 hospitals.