Dr. Robert H. Drennan, MD | Baton Rouge, LA | Cardiologist

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Dr. Robert Drennan specializes in cardiovascular disease and internal medicine, bringing 18 years of experience to his practice. He earned his medical degree from the University of South Carolina School of Medicine Columbia and completed his residency at LSU Health Sciences. Dr. Drennan is fluent in both English and Spanish.

Dr. Drennan 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, with practice locations in Baton Rouge and Zachary, Louisiana. He focuses on treating heart rhythm disorders like atrial fibrillation and supraventricular tachycardia, as well as heart failure. His expertise includes performing electrocardiograms and providing advanced cardiac monitoring services for his patients. Patients rate Dr. Drennan highly, giving him an average score of 5.0.

Overview based on verified provider data

accepting new patients
5

37 Ratings
18 years of experience
speaks English, Spanish
Lsu Health Sciences
37 written reviews
2 specialties
7 areas of expertise
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

37 Ratings with 37 written Reviews

Average Wait Time 19 Minutes

How was your appointment with
Dr. Drennan?

Patients’ Perspective

Gave an accurate diagnosis: (32) Did WellNeeds Improvement (0)
Had a good bedside manner: (31) Did WellNeeds Improvement (0)
Spent time with me: (31) Did WellNeeds Improvement (0)
Provided follow-up after the visit: (31) Did WellNeeds Improvement (0)
Flexible scheduling: (25) Did WellNeeds Improvement (1)
Saw me in a timely manner: (1) Did WellNeeds Improvement (0)
Staff was courteous: (2) Did WellNeeds Improvement (0)

Patients describe Dr. Robert Howard Drennan as exceptionally knowledgeable, kind, and compassionate, with excellent bedside manners. They appreciate his ability to listen intently, address concerns, and explain medical details clearly, fostering an atmosphere of trust and comfort. The positive interactions are highlighted by his personable nature and professional demeanor, leading to strong recommendations. No negative reviews or criticisms were evident in the dataset provided, suggesting an overall high level of patient satisfaction.

AI-generated from the text of patient reviews

37 ratings & reviews

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Showing 1 to 10 of 37 reviews

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He listens and explains in detail. He is very skilled In cardiology.

September 1st, 2026

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Dr. Drennan is very knowledgeable, kind, and listens intently. He always answers all my questions and puts me at ease. He's the best.

August 4th, 2026

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Doc was Fabulous as always and the ladies out front with checking in & out are Amazing. They are so sweet yet so professional.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling
Saw me in a timely manner
Staff was courteous

Needs Improvement

July 2nd, 2026

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Very professional and informative.

June 17th, 2026

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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!

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Provided follow-up after the visit
Flexible scheduling
Staff was courteous

Needs Improvement

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!!

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

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.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

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.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

November 23rd, 2025

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

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

November 21st, 2025

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	Dr. Clinton Joseph Alombro, MD	Dr. Libertad Raibstein	Dr. Robert William Wallace II
Cardiovascular Disease	Internal Medicine	Internal Medicine	Internal Medicine
Accepts New Patients
5 (37 Ratings)	0 (0 Ratings)	0 (0 Ratings)	0 (0 Ratings)
18 Years of Experience	11 Years of Experience	9 Years of Experience	9 Years of Experience
No Virtual Visit Option	No Virtual Visit Option	No Virtual Visit Option	No Virtual Visit Option
Speaks English, Spanish
Baton Rouge , LA	Baton Rouge , LA	Baton Rouge , LA	Baton Rouge , LA
Med School: University Of South Carolina School Of Medicine Columbia	Med School: Ross University School Of Medicine	Med School: Louisiana State University School Of Medicine In New Orleans	Med School: Louisiana State University School Of Medicine In New Orleans
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

Dr. Robert Howard Drennan holds an expired medical license in the state of Louisiana.

Medical License

Medical Doctor with an expired medical license in the state of Louisiana that expired in 2026.

Education & Training

Residency

Completed their residency at Lsu Health Sciences.

Medical School

Graduated from University Of South Carolina School Of Medicine Columbia in 2008.

NPI Number

Dr. Drennan's NPI number is 1538336177.

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What languages does Dr. Robert Drennan speak?: Dr. Robert Drennan speaks English and Spanish.
How can I make an appointment with Dr. Robert Drennan?: You can find contact information for Dr. Robert Drennan here on Vitals.
Where is Dr. Robert Drennan's office located?: Dr. Robert Drennan's office is located at 8401 Picardy Ave, Baton Rouge, LA, 70809.
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.
Does Dr. Robert Drennan accept my insurance?: You can see the insurance plans that Dr. Robert Drennan accepts on their Vitals profile.

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