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.
Very caring and pleasant.
(3 days ago)
Sep-2026
Very professional staff
(4 days ago)
Sep-2026
Great bedside manner.
(1 week ago)
Sep-2026
Loved her!
(1 week ago)
Sep-2026
Very professional kind helpful and caring also explained everything in an understandable way I’m glad she is my doctor She is a great doctor!!🙏🏼
(1 week ago)
Sep-2026
this was my first visit and Dr. Brennan and her staff made me feel completely comfortable and took their time in answering questions and addressing any concerns. Great personality and very thorough. I know I am in good hands 🙏🏻
(1 week ago)
Sep-2026
Everyone made me feel so comfortable they were very professional. Dr Brennan is very professional and friendly. She's a new doctor to me and so far I think she's Awesome Sauce!! Thank you
Have a great day!
(2 weeks ago)
Sep-2026
Dr. Brennan was very patient as I read my prepared list of concerns. She clarified all of my misconceptions and made suggestions for moving forward.
(2 weeks ago)
Sep-2026
Extremely thorough!
(2 weeks ago)
Sep-2026
Congratulations on your new addition to your family.
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)
Very caring and pleasant.
Very professional staff
Great bedside manner.
Loved her!
Very professional kind helpful and caring also explained everything in an understandable way I’m glad she is my doctor She is a great doctor!!🙏🏼
this was my first visit and Dr. Brennan and her staff made me feel completely comfortable and took their time in answering questions and addressing any concerns. Great personality and very thorough. I know I am in good hands 🙏🏻
Everyone made me feel so comfortable they were very professional. Dr Brennan is very professional and friendly. She's a new doctor to me and so far I think she's Awesome Sauce!! Thank you Have a great day!
Dr. Brennan was very patient as I read my prepared list of concerns. She clarified all of my misconceptions and made suggestions for moving forward.
Extremely thorough!
Congratulations on your new addition to your family.