Dr. (Col) Gregory Hsu
Dr. (Col.) Gregory Hsu, left, treats facial lacerations on famed UFC fighter Conor McGregor. Hsu, an Air Force Reserve Citizen Airman, operates a Las Vegas-based private ophthalmology practice and has provided medical support to the UFC since 2005.

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Tags: ufc, IMA , Hsu, pacaf
Photo by: Courtesy photo by Elliot Howard |  VIRIN: 160102-F-ZZ999-0001.JPG