Tulio Diaz, MD

Dr. Tulio Diaz earned his medical degree from Universidad Libre de Cali in Cali, Colombia, in 1999. After medical school, Dr. Diaz completed an internship and residency in Internal Medicine at MetroWest Medical Center, Framingham, Massachusetts; and a Fellowship in Cardiovascular Medicine and Vascular Medicine at Saint Elizabeth’s Medical Center, Boston, Massachusetts. He also completed Interventional Cardiology training at Saint Elizabeth’s Medical Center, Boston, Massachusetts. Dr.Diaz is a board-certified interventional cardiologist and the first cardiologist in the metroplex to specifically obtain a board certification in vascular interpretation test through the American Registry for Diagnostic Medical Sonography (ARDMS), Endovascular Interventions for peripheral vascular disease through the Society for Vascular Medicine (SMVB) and Vascular Medicine.

Dr. Diaz is Board Certified in Internal Medicine and Cardiovascular Disease. He completed a post-doctoral fellowship at Massachusetts General Hospital, Harvard Medical School. He is a Member of the Massachusetts Medical Society, the American College of Physicians and the American Society of Internal Medicine. Dr. Diaz is fluent in Spanish. Dr. Diaz and his wife live in Dallas,Texas.

Dr. Tulio Diaz specializes in

  • Structural Heart Disease, PVD and Endovascular medicine
  • Venous and Arterial Thrombolysis
  • Endovascular AAA Repair (EVAR)
  • Carotid Stent
  • EVLT for Varicose Veins (Laser Therapy)
  • Radial Artery Catheterization
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  • Endovascular Medicine
  • Vascular Medicine
  • Cardiovascular Disease
  • Internal Medicine


  • Fellowship, Cardiology and Vascular Medicine, 2011
    Saint Elizabeth’s Medical Center
    Tufts Medical School
  • Fellowship, Cardiovascular Medicine, 2009
    Saint Elizabeth’s Medical Center
    Tufts Medical Center Clinical and Research
  • Fellow, Cardiology Division, 2007
    Massachusetts general Hospital
    Harvard Medical School
  • Internship and Residency, 2002-2005
    MetroWest Medical Center
    University of Massachusetts


  • Doctor of Medicine, 1999
    Universidad Libre de Cali in Cali, Colombia