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.
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.
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.
Love her she is a great dr
(2 days ago)
Jun-2026
Great doctor! Answered all my questions and made me feel comfortable!
(4 days ago)
Jun-2026
She was very informative about my situation and what we can do
(5 days ago)
Jun-2026
I have confidence in Dr Brennan and her concern for my health. She listens and ask enough questions to understand how I’m doing.
(1 week ago)
Jun-2026
Dr friendly and concerned!
(1 week ago)
Jun-2026
attentive, perfect listener, focused, quick & exact approach towards cardiac issues. Very well educated & confident on future diagnosis of cardiac issues to prevent heart health on time. I am satisfied with her recommendations. Her staff nurses are professional and knows what they are doing. Made me feel confident and taken care of
(1 week ago)
Jun-2026
She came in the room with such a warm smile and was easy to talk to. I am one who doesn’t like change, but I am happy to have her as my new Cardiologist!!
(1 week ago)
May-2026
Aok
(1 week ago)
May-2026
Very polite and easy to speak to.
(1 week ago)
May-2026
She is very kind and compassionate and cares about me and my feelings.shes doing everything in her power to help me believe in her
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.
See other doctors in Cardiovascular Institute of the South (CIS)
Love her she is a great dr
Great doctor! Answered all my questions and made me feel comfortable!
She was very informative about my situation and what we can do
I have confidence in Dr Brennan and her concern for my health. She listens and ask enough questions to understand how I’m doing.
Dr friendly and concerned!
attentive, perfect listener, focused, quick & exact approach towards cardiac issues. Very well educated & confident on future diagnosis of cardiac issues to prevent heart health on time. I am satisfied with her recommendations. Her staff nurses are professional and knows what they are doing. Made me feel confident and taken care of
She came in the room with such a warm smile and was easy to talk to. I am one who doesn’t like change, but I am happy to have her as my new Cardiologist!!
Aok
Very polite and easy to speak to.
She is very kind and compassionate and cares about me and my feelings.shes doing everything in her power to help me believe in her