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.
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.

So nice and helpful
I’m new to seeing Dr. Drennan because my last one retired.. I was very apprehensive because I’d been with Dr. Freddy for so long. He gave me my first device, he’s been my guy! I love and trust my primary physician and she referred me to Dr. Drennan. He’s very pleasant first impression. I think he may have sensed my nervousness but by the end of that first visit I felt like I’d been seeing him for years. What I specifically liked was when I told him Dr. Freddy and I had a special relationship and he did his part to bring me back from being critically ill and I did my part and I asked that he do his part in taking care of me and I was going to do mine. I absolutely love Dr. Drennan and I’m glad that we’re linked up!
Dr. Drennan was great as usual. He takes his time to discuss my particular issues and any concerns I may have. Melissa and April were also very helpful and gracious. I’m so thankful to be under Dr. Drennan’s care and I’ve never had an unpleasant experience.
He was very polite and helpful, and answered all of my questions.
Great customer service
Fantastic visit
He is a really good cardiologist.
Keep you well informed also very good listener.
Good Doctor
Dr Drennan is a great person and he is very knowledgeable about my history of my medical history