The THMG Practice

The Texas Heart Medical Group physicians are internationally known for their expertise in diagnosing, treating, and preventing cardiovascular diseases.

Alexander Postalian, MD, FSCAI

Dr. Postalian is a cardiologist at the Texas Heart Institute, acting as a member of the teaching staff for the Institute’s cardiovascular disease training programs. 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 an 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 – being the only resident to have been recognized with these three awards in the recent history of the school. He consistently scored among the very highest in the nation in standardized testing during training, including obtaining the highest score compared with his nationwide peers on multiple occasions.

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.

Connect with Alex on Twitter @APostalian


Patient Testimonials

  • Dr. Alexander Postalian is just one of my heroes at Texas Heart Medical Group. Dr. Stephannie Coulter to name another. The staff is like a caring family! I highly recommend! You will not be disappointed.

    – Charles S.

  • I’m no stranger to the group of fine cardiologists practicing there in the O’Quinn Tower in the 6600 block of Fannin in Houston. I didn’t just stumble upon them – my now retired internist in Nacogdoches recommended me to them some nearly 20 years ago. Lots of lateral artery disease, cardiovascular disease, diabetes triggering a metabolic syndrome situation has kept me coming back seeing the “new group’s” predecessor, Dr. Patrick Hogan, for his finely honed diagnostician skills – plus I had the comfort of visiting the other honored and honorable doctors associated in the cordial and most professional group in the absence of my “main man”. Recently on the heels of the retirement proceedings of the venerable Dr. Hogan, I was able to in the throes of a quandary predicament get quickly connected by phone with Dr. Alexander Postalian who promptly analyzed, recognized, and resolved to do something about the nth degree pain I was suffering. Upon heading to Houston PDQ in the middle of the Corona calamity, I was able to get the capable, courteous, professional, and precise care from support staff and surgeons alike. Dr. Postalian’s swift determination of the 100% blockage I had enabled him to in a nearly 4-hour process get me open and flowing – to an area heretofore reflecting no discernible pulse. Emotional relief accompanied the situation inasmuch as being from out of town (no visitors or family allowed in the hospital room) I could count on multiple calls, emails, texts, to/from between Dr. Postalian and my family, thereby keeping them as well as myself apprised and comforted. This concern and follow-up continues. The hands-on care and contact is the closest I’ve come to the quick as was needed contact with my doctors like I had over 70 years ago. This group will make you as a patient feel good in all necessary and desired ways.

    – Craig S.