Alexander Postalian, MD

Structural Heart Disease Cardiology, Electrophysiology, Cardiology, Interventional Cardiology

Accepting New Patients

Alexander Postalian, MD

About Me


Dr. Postalian is a cardiologist at the Texas Heart Institute and Houston Methodist hospital. Dr. Postalian specializes in coronary, peripheral vascular, and structural/valvular heart disease intervention. His specific clinical and research areas of interest include cardiovascular disease prevention – including complex lipid disorder management, state-of-the-art coronary intervention guided by intravascular imaging and flow assessment, next-day discharge transcatheter aortic valve replacement, and minimally invasive abdominal aortic aneurysm treatment. Dr. Postalian has completed board certification examinations in Cardiovascular Diseases, Interventional Cardiology, Echocardiography, Nuclear Cardiology, and Internal Medicine. 

Dr. Postalian is a graduate of the Texas Heart Institute’s interventional and general cardiology fellowship training programs sponsored by Baylor College of Medicine. He was honored with the Tauber Award as the most outstanding graduating cardiology fellow. Prior to his cardiology fellowship,

Dr. Postalian completed internal medicine residency at The McGovern Medical School, University of Texas Health Science Center at Houston. During residency training, he was honored as the Outstanding Senior Resident of the Year, Outstanding Resident of the Year, and Outstanding Intern of the Year. He consistently scored among the very highest in the nation in standardized testing during training.

Dr. Postalian serves as Associate Editor of the Texas Heart Institute Journal and is also a reviewer for multiple other medical journals. He is an active researcher with several peer-reviewed publications, performing many abstract presentations, and frequently giving oral presentations in several national and international meetings. 

Originally from Venezuela, he graduated first in his class from medical school at the Universidad Central de Venezuela in 2010, obtaining the distinction of Magna Cum Laude. He also received the Lorenzo Campins y Ballester award and the Luis Razetti Award for outstanding academic achievement and research accomplishment.

Outside of work, Dr. Postalian enjoys exercising, the beach, motorsports, playing video games on occasion for relaxation and spending time with his wife and children.

Clinical Interests

Image-Guided Coronary Intervention
Fast Track Tanscatheter Aortic Valve Replacement (TAVR)
Structural/Valvular Heart Disease
Preventative Cardiology
Mitral Valve Stenosis
Arrhythmias & Pacemakers
Incidence, Predictors, and Significance of Ventricular Arrhythmias in Patients With Continuous-Flow LVADs


Cardiovascular Disease | 2019
Internal Medicine | 2016
Universidad Central de Venezuela Escuela de Medicina Luis Razetti | 2010
Internal Medicine | University of Texas Health Science Center - Houston, TX | 2016
Cardiovascular Diseases | Baylor College of Medicine / Texas Heart Institute - Houston, TX | 2019
Interventional Cardiology | Baylor College of Medicine / Texas Heart Institute - Houston, TX | 2020
  • Houston Methodist Hospital


  • English
Languages listed are spoken by doctor and/or office staff.

Frequently Asked Questions

  • Where is Dr. Alexander Postalian located?
    Dr. Alexander Postalian sees patients at the following locations:
    • 6624 Fannin St., Ste 2780, Houston, TX 77030
  • What languages do Dr. Alexander Postalian and/or staff speak?
    Dr. Alexander Postalian and/or office staff speak English