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Katherine Brennan, MD
Cardiovascular Institute of the South (CIS)
Cardiology
Lafayette, LA
Most recent review: Sep 26, 2025
New
5.0
274 Ratings
102 Comments
Dr. Katherine Brennan is a cardiologist at Cardiovascular Institute of the South in Lafayette. Dr. Brennan attended Loyola University in Baltimore, Maryland where she earned a bachelor’s degree in biology and graduated summa cum laude. Her studies continued at Sidney Kimmel Medical College at Thomas Jefferson University in Philadelphia, Pennsylvania where she earned her doctorate, and returned for her cardiovascular disease fellowship. Her internship and residency in internal medicine were completed at Beth Israel Deaconess Medical Center in Boston, Massachusetts.
5.0
274 Ratings
102 Comments
Dr. Katherine Brennan is a cardiologist at Cardiovascular Institute of the South in Lafayette. Dr. Brennan attended Loyola University in Baltimore, Maryland where she earned a bachelor’s degree in biology and graduated summa cum laude. Her studies continued at Sidney Kimmel Medical College at Thomas Jefferson University in Philadelphia, Pennsylvania where she earned her doctorate, and returned for her cardiovascular disease fellowship. Her internship and residency in internal medicine were completed at Beth Israel Deaconess Medical Center in Boston, Massachusetts.
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Most recent review: 5 days ago
• 102 total reviews
The reviews listed below were collected independently of Cardiovascular Institute of the South (CIS) through rater8. Each review represents an authentic and verified patient experience.
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441 Heymann Boulevard
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Lafayette, LA 70503
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2730 Ambassador Caffery Pkwy
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Lafayette, LA 70506
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2390 West Congress Street
Lafayette, LA 70506
Lafayette, LA 70506
Dr. Katherine Brennan is a cardiologist at Cardiovascular Institute of the South (CIS) in Lafayette.
Dr. Brennan attended Loyola University in Baltimore, Maryland where she earned a bachelor’s degree in biology and graduated summa cum laude. Her studies continued at Sidney Kimmel Medical College at Thomas Jefferson University in Philadelphia, Pennsylvania where she earned her doctorate, and returned for her cardiovascular disease fellowship. Her internship and residency in internal medicine were completed at Beth Israel Deaconess Medical Center in Boston, Massachusetts.
Dr. Brennan is certified in internal medicine and echocardiography. Her clinical focuses include general cardiology, echocardiography, prevention, and cardiovascular disease in women. She is a member of Phi Beta Kappa and many additional honor societies. In her spare time, she enjoys playing the piano, attending group workout classes, and baking.
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Love how she “listens” to her patients!
Awesome
I really like her! She listens carefully and explains everything!
Great Dr
Everybody was very friendly and respectful!
This was my first time with Dr Brennan. She was wonderful and gave me all the time in the world!
Very professional and kind well pleased thank you
Professional. Pleasant. Answered questions understandablely
Very nice and caring I am very happy to have her as my dr
I think she and I will be able to communicate like my previous doctor. It almost seems like she and I knew one another. She's very friendly also.