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.
Dr. Brennan is very professional and explains everything to her patients and answers all questions the patient ask.
(3 days ago)
Mar-2026
Dr Brennan was very nice and answered all of my questions. I felt at ease after leaving my appointment.
(4 days ago)
Mar-2026
She is Great , so sweet. , Thanks for taking care of me.
(1 week ago)
Mar-2026
Very polite, informative and patient.
(1 week ago)
Mar-2026
I like her a lot, she is thorough and explains things to you and makes sure you understand her.
(1 week ago)
Mar-2026
The doctor was very personal and her concern for my health as a new patient was welcomed and she relaxed me immediately. She asked for questions I might have for her and addressed them to my satisfaction. She was referred to me and I’m happy to be her patient. Thank you Doctor Brennan.
(1 week ago)
Mar-2026
Very personable, patient, answered every question, was sympathetic and kind.
(2 weeks ago)
Mar-2026
Great doctor and easy to talk to
(2 weeks ago)
Mar-2026
I like that she listened to me about how my progress was coming along. And asked if their was anything else SHE could do to help me. I think she cares for her patients.
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)
Dr. Brennan is very professional and explains everything to her patients and answers all questions the patient ask.
Dr Brennan was very nice and answered all of my questions. I felt at ease after leaving my appointment.
She is Great , so sweet. , Thanks for taking care of me.
Very polite, informative and patient.
I like her a lot, she is thorough and explains things to you and makes sure you understand her.
The doctor was very personal and her concern for my health as a new patient was welcomed and she relaxed me immediately. She asked for questions I might have for her and addressed them to my satisfaction. She was referred to me and I’m happy to be her patient. Thank you Doctor Brennan.
Very personable, patient, answered every question, was sympathetic and kind.
Great doctor and easy to talk to
I like that she listened to me about how my progress was coming along. And asked if their was anything else SHE could do to help me. I think she cares for her patients.
Excellent!!