About Dr. DiazRoberto F. Diaz, M.D. is a Board Certified in Internal Medicine (Certification exams in 1996, 2006, 2016 and 2025) and Sleep Medicine specialist . In 1990, Dr. Diaz graduated at the top of his medical school class ( "Summa Cum Laude" equivalent) at the Higher University of San Andrés in La Paz, Bolivia. He trained in internal medicine at the University of Illinois at Chicago. After practicing in Chicago for 10 years, Dr. Diaz moved to Texas in 2004 and founded Alice Internal Medici
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