Dr. Robert H. Drennan, MD | Baton Rouge, LA | Cardiovascular Disease

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Dr. Robert Drennan is a cardiovascular disease specialist and internal medicine physician with 18 years of experience treating heart conditions and providing comprehensive adult care. He earned his medical degree from the University of South Carolina School of Medicine in Columbia and completed his residency training at LSU Health Sciences. Dr. Drennan speaks both English and Spanish to better serve his diverse patient community.

Dr. Drennan practices at multiple locations throughout Baton Rouge and Zachary, Louisiana, and maintains affiliations with Baton Rouge General Medical Center Bluebonnet, Baton Rouge General Medical Center Mid City, and Our Lady of the Lake Regional Medical Center. He specializes in treating heart rhythm disorders such as atrial fibrillation and other cardiac arrhythmias. His expertise includes performing diagnostic tests like electrocardiograms and stress tests to evaluate heart function and health. Patients rate Dr. Drennan highly for his care, giving him an …average rating of 5.0 stars.

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AI-generated from data on this provider profile.

accepting new patients
5

33 Ratings
18 years of experience
speaks English, Spanish
Lsu Health Sciences
33 written reviews
2 specialties
7 areas of expertise
2 board certifications
3 hospital affiliations
3 office locations
Male

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me

Based on patient feedback. Read the reviews

Dr. Drennan's Ratings and Reviews

5

33 Ratings with 33 written Reviews

Average Wait Time 18 Minutes

How was your appointment with
Dr. Drennan?

Patients’ Perspective

Gave an accurate diagnosis: (31) Did WellNeeds Improvement (0)
Had a good bedside manner: (30) Did WellNeeds Improvement (0)
Spent time with me: (30) Did WellNeeds Improvement (0)
Provided follow-up after the visit: (30) Did WellNeeds Improvement (0)
Flexible scheduling: (24) Did WellNeeds Improvement (1)
Saw me in a timely manner: No Ratings
Staff was courteous: (1) Did WellNeeds Improvement (0)

Patients consistently praise Dr. Robert Howard Drennan for his excellent bedside manner, thoroughness, and the genuine care he exhibits, with many highlighting his ability to listen attentively and explain medical details clearly. They commend his professionalism, knowledge, and personable nature, noting that his positive and calming demeanor often alleviates their worries. While focusing on positive experiences, patients repeatedly express their trust and satisfaction, with no negative comments observed in the dataset provided. Overall, Dr. Drennan is highly recommended by his patients for those seeking cardiovascular medical advice.

AI-generated from the text of patient reviews

33 ratings & reviews

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Showing 1 to 10 of 33 reviews

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This was an annual checkup for pacemaker. Doc asked me if I had any problems..other than being old. He checked the pacemaker and all was well. We chatted....Doc is a likable and easy to talk with..

April 30th, 2026

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Dr. Drennan was very kind and listened to all of my concerns. So glad he was able to see me and make me feel better about my symptoms. I would definitely recommend him to anyone looking for a caring physician!

March 12th, 2026

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Dr.Drennan is nothing short of excellent!! Listens to his patients, just a very nice and pleasant person. Very knowledgeable. If you need the best, do not hesitate to choose this man!!

February 16th, 2026

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He patiently listened my questions and explained it clearly to make sure I understood. His smile and understanding eased my nervousness. He is a very good doctor.

January 29th, 2026

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My appointment with Dr. Drennan was like always very professional. Dr. Drennan has very good bedside manners. He listens to your concerns and answers any questions you may have. His pleasant smile gives me that warm and calming feeling. I would recommend Dr. Drennan to anyone that is looking for a cardiologist.

November 23rd, 2025

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Frank And Gregarious….I Feel That He Truly Cares About My Wellbeing.

November 21st, 2025

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Dr Drennan is thorough and truly cares about his patients. I highly recommend him to anyone needing cardiovascular medical advice.

September 24th, 2025

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Dr. Drennan was so helpful, knowledgeable, professional he explains things simply with such compassion. I enjoyed my visit with him today and look forward to many visits with him in the future, and I highly recommend him to anyone searching for a heart specialist

September 23rd, 2025

2 people found this helpful

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Dr. Drennan is very knowledgeable and professional, yet he is very personable too. He continually demonstrates genuine care and concern for his patient’s health! I could not ask for a better cardiologist /electrophysiologist!

August 20th, 2025

1 person found this helpful

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I loved everything about him. He was so personable. He was not overly alarming to me. I was very comfortable with him. I just liked him a lot and I would I would recommend him to anyone that would be need to see a heart specialist. I gave him a five all the way around. I’d give him a 10 if you had that.

June 18th, 2025

1 person found this helpful

Cardiovascular Institute Of The South Baton Rouge

8401 Picardy AveBaton Rouge, LA 70809

Tel: (225) 308-0247

Mon8:00 am - 5:00 pm

Tue8:00 am - 5:00 pm

Wed8:00 am - 5:00 pm

Thu8:00 am - 5:00 pm

Fri8:00 am - 5:00 pm

SatClosed

SunClosed

Cardiovascular Institute Of The South Zachary

6550 Main St Ste 1000Zachary, LA 70791

Tel: (225) 654-1559

Mon7:30 am - 5:00 pm

Tue7:30 am - 5:00 pm

Wed7:30 am - 5:00 pm

Thu7:30 am - 5:00 pm

Fri7:30 am - 5:00 pm

SatClosed

SunClosed

Our Lady Of The Lake Regional Medical Center

5000 Hennessy BlvdBaton Rouge, LA 70808

Tel: (225) 765-6565


Dr. Robert Howard Drennan, MD	Johile Everette Curtis	Dr. Matthew Allen Stair, MD	Dr. Amir Habibollah Ausef, MD
Cardiovascular Disease	Nurse Practitioner	Diagnostic Radiology	Hospital Medicine
Accepts New Patients
5 (33 Ratings)	0 (0 Ratings)	5 (1 Rating)	4 (4 Ratings)
18 Years of Experience		22 Years of Experience	25 Years of Experience
No Virtual Visit Option	No Virtual Visit Option	No Virtual Visit Option	No Virtual Visit Option
Speaks English, Spanish	Speaks English	Speaks English	Speaks English
Baton Rouge , LA	Zachary , LA	Baton Rouge , LA	Baton Rouge , LA
Med School: University Of South Carolina School Of Medicine Columbia		Med School: University Of Texas Southwestern Medical School	Med School: American University Of The Caribbean School Of Medicine
Current Profile	View Profile	View Profile	View Profile

Search for your insurance and plan

Accepts Medicare
Accepts Medicaid

Check-up
Heartburn
Immunization
Internal Medicine
Physical
Vaccination
Weight Loss

MEDICAL LICENSE

Medical Doctor, Louisiana, 2026, Expired

EDUCATION & TRAINING

Residency

Lsu Health Sciences

Medical School

University Of South Carolina School Of Medicine ColumbiaGraduated in 2008

Dr. John Edward Erffmeyer, MD
Allergy & Immunology
50 Years Exp | Baton Rouge, LA
(9)
Dr. James R Westerfield, MD
Hospital Medicine
27 Years Exp | Baton Rouge, LA
(3)
Dr. John Adam Grezaffi, MD
Vascular & Interventional Radiology
21 Years Exp | New Orleans, LA
(1)
Dr. William H Hines Sr, MD
Critical Care Medicine
48 Years Exp | Baton Rouge, LA
(9)
Dr. John Clark Simon, MD
Nephrology
36 Years Exp | Covington, LA
(40)
Dr. Gertrude Ihuaku Onyebuchi Chimeka Anyanwoke, MD
Infectious Disease
26 Years Exp | Baton Rouge, LA
(10)
Dr. Elsie Johanna Mensah-Armoo, MD
Hospital Medicine
29 Years Exp | Alexandria, LA
(0)
Joseph Wade Delaughter
Nurse Practitioner
| Baton Rouge, LA
(0)
Crystal Lenee Hurst
Nurse Practitioner
| Zachary, LA
(1)
Dr. Kenneth Gordon Smith, MD
Nephrology
24 Years Exp | Baton Rouge, LA
(3)

How can I make an appointment with Dr. Robert Drennan?: You can find contact information for Dr. Robert Drennan here on Vitals.
Is Dr. Robert Drennan accepting new patients?: Dr. Robert Drennan is accepting new patients on Vitals. View Dr. Robert Drennan's profile on Vitals to make an appointment.
Does Dr. Robert Drennan accept my insurance?: You can see the insurance plans that Dr. Robert Drennan accepts on their Vitals profile.
What languages does Dr. Robert Drennan speak?: Dr. Robert Drennan speaks English and Spanish.
Which hospitals is Dr. Robert Drennan affiliated with?: Dr. Robert Drennan is affiliated with Baton Rouge General Medical Center Bluebonnet, Baton Rouge General Medical Center Mid City, and Our Lady Of The Lake Regional Medical Center.

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