Dr. Robert Drennan is board-certified in internal medicine, cardiology, nuclear cardiology and clinical electrophysiology. Dr. Drennan is a member of the American College of Cardiology, the Heart Rhythm Society, and the American Society of Nuclear Cardiology. He has earned many awards, such as the Douglas Scholarship and the College of Charleston Founder’s Scholarship.
Dr. Robert Drennan is board-certified in internal medicine, cardiology, nuclear cardiology and clinical electrophysiology. Dr. Drennan is a member of the American College of Cardiology, the Heart Rhythm Society, and the American Society of Nuclear Cardiology. He has earned many awards, such as the Douglas Scholarship and the College of Charleston Founder’s Scholarship.
The reviews listed below were collected independently of Cardiovascular Institute of the South through rater8. Each review represents an authentic and verified patient experience.
Dr. Drennan is an excellent doctor, so knowledgeable and professional with a caring soul
(2 days ago)
Jul-2026
Dr.Drennan is so personable. He takes his tme with you, and also can laugh with you too!!! Awesome cardiologist!!
(1 week ago)
Jul-2026
Very professional and I feel he’s really concerned to what ever health issues I have and tries to get to the root of what’s causing it to happen.👍
(1 week ago)
Jul-2026
I’m blessed to have the best cardiologist in Baton Rouge. He’s on time and very thorough. He explains everything and I never feel rushed.
(1 week ago)
Jul-2026
I had an excellent experience today. Dr Drennan was professional, knowledgeable, and genuinely listened to my concerns. I never felt rushed, and everything was explained clearly. I highly recommend this practice.”
(1 week ago)
Jul-2026
Always takes time to answer all questions. Never in a hurry.
(2 weeks ago)
Jul-2026
Very professional and caring.
(3 weeks ago)
Jul-2026
He’s a very caring person. He takes his time to explain things where you can understand and you relax with him.
Dr. Robert Drennan is an electrophysiologist with CIS in Baton Rouge and Zachary. He completed his Bachelor of Science degree in biochemistry and molecular biology, as well as a Bachelor of Arts degree in chemistry, at the College of Charleston in South Carolina. He earned his doctorate of medicine from the University of South Carolina School of Medicine in Columbia, South Carolina. He completed a residency in internal medicine from the Tulane University School of Medicine in New Orleans. He also completed both his cardiology and electrophysiology fellowship at the Louisiana State University Health Science Center in New Orleans.
Dr. Drennan is board-certified in internal medicine, cardiology, nuclear cardiology and clinical electrophysiology. He previously worked at Touro Infirmary, and he also worked as a lab assistant at the Medical University of South Carolina and at the College of Charleston.
Dr. Drennan is a member of the American College of Cardiology, the Heart Rhythm Society, and the American Society of Nuclear Cardiology. He has presented, researched and written for numerous publications on a variety of topics including sudden cardiac arrest, atrial fibrillation, and peripheral arterial disease. He has earned many awards, such as the Douglas Scholarship and the College of Charleston Founder’s Scholarship.
See other doctors in Cardiovascular Institute of the South
Dr. Drennan is an excellent doctor, so knowledgeable and professional with a caring soul
Dr.Drennan is so personable. He takes his tme with you, and also can laugh with you too!!! Awesome cardiologist!!
Very professional and I feel he’s really concerned to what ever health issues I have and tries to get to the root of what’s causing it to happen.👍
I’m blessed to have the best cardiologist in Baton Rouge. He’s on time and very thorough. He explains everything and I never feel rushed.
I had an excellent experience today. Dr Drennan was professional, knowledgeable, and genuinely listened to my concerns. I never felt rushed, and everything was explained clearly. I highly recommend this practice.”
Always takes time to answer all questions. Never in a hurry.
Very professional and caring.
He’s a very caring person. He takes his time to explain things where you can understand and you relax with him.
Love him he doesn’t make me have hives
Very professional and courteous