Nikolaos A. Diakos, MD, PhD

Nikolaos A. Diakos, MD, PhD, is an interventional cardiologist and specialist in heart failure who is pioneering new treatments and devices. He is recognized for his substantial clinical and translational research accomplishments in the areas of heart failure and mechanical cardiac support. Show full bio

Dr. Diakos has authored many papers in high-impact, peer-reviewed journals such as the Journal of the American College of Cardiology and the Journal of Heart and Lung Transplantation. He has also won almost a dozen awards for his research, including an award from the International Society for Heart and Lung Transplantation, a Research Merit Scholarship from the Acute Cardiac Unloading and Recovery Working Group (A-Cure), and numerous awards from the Hellenic Cardiological Society.

He is certified by the Educational Commission for Foreign Medical Graduates, the American Board of Internal Medicine (Internal Medicine, Cardiovascular Disease), and the National Board of Echocardiography.

He sees patients at The Texas Heart Institute Medical Group at 6624 Fannin Suite 2780, Houston, Texas 77030. For appointments, call (713) 790-9401.



See Publications

Texas Heart Institute Positions


  • Interventional Cardiology
  • Heart Failure
  • Mechanical Circulatory Support
  • Heart Transplantation


  • Postgraduate:

    University of Athens School of Medicine, Athens, Greece

  • Medical School:

    University of Athens School of Medicine, Athens, Greece

  • Residency:

    University of Utah, Salt Lake City, Utah

  • Fellowships:

    Research: Utah Cardiac Recovery Program, University of Utah Molecular Medicine Program, Eccles Institute of Human Genetics, Salt Lake City, Utah
    Cardiovascular Disease: Tufts Medical Center, Boston, Massachusetts
    Advance Heart Failure/Transplant: New York Presbyterian Hospital-Columbia University, New York City, New York
    Interventional Cardiology: Montefiore Medical Center, Bronx, New York


  • American Board of Internal Medicine, Cardiovascular Disease
  • American Board of Internal Medicine, Internal Medicine


Diakos, N. A. (2023). Management of cardiogenic shock: Present and future. Tex Heart Inst J 50, e238119.
Diakos, N. A., Taleb, I., Kyriakopoulos, C. P. et al. (2021). Circulating and Myocardial Cytokines Predict Cardiac Structural and Functional Improvement in Patients With Heart Failure Undergoing Mechanical Circulatory Support. J Am Heart Assoc 10, e020238.
Slomovich, S., Oh, K. T., Diakos, N. A. et al. (2021). A Rare Case of Disseminated Tuberculosis and Hematological Malignancy in a Heart Transplant Recipient. Transplant Proc 53, 2626–2629.
Kampaktsis, P. N., Tzani, A., Doulamis, I. P. et al. (2021). State-of-the-art machine learning algorithms for the prediction of outcomes after contemporary heart transplantation: Results from the UNOS database. Clin Transplant 35, e14388.
Diakos, N. A., Thayer, K., Swain, L. et al. (2021). Systemic Inflammatory Burden Correlates with Severity and Predicts Outcomes in Patients with Cardiogenic Shock Supported by a Percutaneous Mechanical Assist Device. J Cardiovasc Transl Res 14, 476–483.
Cluntun, A. A., Badolia, R., Lettlova, S. et al. (2021). The pyruvate-lactate axis modulates cardiac hypertrophy and heart failure. Cell Metab 33, 629-648.e10.
Larson, A., Libermann, T. A., Bowditch, H. et al. (2021). Plasma Proteomic Profiling in Hypertrophic Cardiomyopathy Patients before and after Surgical Myectomy Reveals Post-Procedural Reduction in Systemic Inflammation. Int J Mol Sci 22, 2474.
Koliopoulou, A. G., Bonios, M. J., Diakos, N. A. et al. (2020). Biventricular failure and total artificial heart: Old and new solutions for a vexing problem. Hellenic J Cardiol 61, 413–414.
Riehle, C., Weatherford, E. T., Wende, A. R. et al. (2020). Insulin receptor substrates differentially exacerbate insulin-mediated left ventricular remodeling. JCI Insight 5, 134920.
Symons, J. D., Deeter, L., Deeter, N. et al. (2019). Effect of Continuous-Flow Left Ventricular Assist Device Support on Coronary Artery Endothelial Function in Ischemic and Nonischemic Cardiomyopathy. Circ Heart Fail 12, e006085.