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.
Great dr
(4 days ago)
Jun-2026
Excellent listener, personable, understanding and will work with my MD ANDERSON drs.
I feel confident with her.
(5 days ago)
Jun-2026
The best
(6 days ago)
Jun-2026
Awesome
(6 days ago)
Jun-2026
She is the most amazing person in the world she is awesome
(1 week ago)
Jun-2026
Dr. Brennan is second to none, extremely professional, knowledgeable, friendly and always listen to the patient concerns and issues. The supporting staff is second to none, professional, knowledgeable, friendly and always listening to the patient concerns and issues. The lobby is always tidy, the exam room is full of literature/poster.
(1 week ago)
Jun-2026
She was absolutely wonderful! Speedy and answered every question I had!
(1 week ago)
Jun-2026
Dr. Brennan is very personable, kind, and has excellent bedside manner. I HIGHLY recommend her!
(1 week ago)
Jun-2026
Everyone was friendly and personable from start to end. Everything was explained to me in ways I could understand. Definitely recommend
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)
Great dr
Excellent listener, personable, understanding and will work with my MD ANDERSON drs. I feel confident with her.
The best
Awesome
She is the most amazing person in the world she is awesome
Dr. Brennan is second to none, extremely professional, knowledgeable, friendly and always listen to the patient concerns and issues. The supporting staff is second to none, professional, knowledgeable, friendly and always listening to the patient concerns and issues. The lobby is always tidy, the exam room is full of literature/poster.
She was absolutely wonderful! Speedy and answered every question I had!
Dr. Brennan is very personable, kind, and has excellent bedside manner. I HIGHLY recommend her!
Everyone was friendly and personable from start to end. Everything was explained to me in ways I could understand. Definitely recommend
She listens.