Doctor of Medicine Degree, University of Texas Southwestern Medical School at Dallas, 1986 (received the Ho Din Award, the highest honor bestowed by the Southwestern Medical Foundation to a member of the graduating class)

Ophthalmology Residency, Baylor College of Medicine, Houston, 1987-1990 (served as Chief Resident 1989 - 1990)

Currently Professor of Ophthalmology, University of Texas Southwestern  Medical Center, and holder of the endowed Dr. W. Maxwell Thomas Chair in Ophthalmology

Vice Chair for Education and Residency Program Director, Department of Ophthalmology, University of Texas Southwestern Medical Center (the largest ophthalmology residency training program in the nation)

Chief of Service, Parkland Health and Hospital System, Dallas, 1998 - Present

Recipient of the University of Texas System Regents' Outstanding Teaching Award, 2012