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.
Professional and straight forward
(3 days ago)
Jul-2026
Pleasant experience look forward to going back just my first visit heart still beating. That’s a good sign.
(4 days ago)
Jul-2026
I just love Dr k. Brennan she is awesome, knowledgeable, patient, listens when you leaves her office you are satisfied, not confused Thank you Dr .Brennan
(5 days ago)
Jul-2026
D
(6 days ago)
Jul-2026
Very helpful
(1 week ago)
Jul-2026
Excellent
(2 weeks ago)
Jun-2026
Great dr
(3 weeks ago)
Jun-2026
Excellent listener, personable, understanding and will work with my MD ANDERSON drs.
I feel confident with 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)
Professional and straight forward
Pleasant experience look forward to going back just my first visit heart still beating. That’s a good sign.
I just love Dr k. Brennan she is awesome, knowledgeable, patient, listens when you leaves her office you are satisfied, not confused Thank you Dr .Brennan
D
Very helpful
Excellent
Great dr
Excellent listener, personable, understanding and will work with my MD ANDERSON drs. I feel confident with her.
The best
Awesome