Houston Methodist. Leading Medicine.
Houston Methodist. Leading Medicine

Methodist DeBakey Cardiology Associates

John J. Mahmarian, M.D., FACC, FASNC, FSCCT

John J. Mahmarian, M.D., FACC, FASNC, FSCCT 6550 Fannin
Suite 1901
Houston, TX 77030


  • Medical School: New York Medical College, Valhalla, NY


  • Medicine Residency at Baylor College of Medicine, Houston, TX
  • Cardiology Fellowship at Baylor College of Medicine, Houston, TX

Board Certifications

  • Cardiovascular Disease
  • Subspecialty certification in Nuclear Cardiology and Cardiovascular Computed Tomography

Areas of Interest

  • Nuclear cardiology

Dr. Mahmarian's Biography

Dr. John J. Mahmarian, Director of Nuclear Cardiology and Computed Tomography (CT) Services at the Methodist DeBakey Heart and Vascular Center, is recognized nationally and internationally as an authority in nuclear cardiology and cardiac CT imaging. He balances his time between research and an active clinical practice. Dr. Mahmarian's research addresses how to tailor therapy, reduce healthcare costs and improve treatment of heart disease using nuclear imaging, including myocardial perfusion imaging, cardiac CT, hybrid imaging and calcium scoring. He has written extensively on myocardial perfusion imaging, and CT angiography. His clinical focus is on prevention of heart disease, acute coronary syndromes and myocardial infarction.

To make an appointment with Dr. Mahmarian call 713-441-1100 or request a referral online

Learn more about Methodist DeBakey Cardiology Associates: