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.
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.

Dr. Brennan and her staff are always polite and pleasant to be around. Dr Brennan is very detailed and informative about my health..
Very complete
Very sweet very thorough. I liked her a lot.
She was very helpful and answered all my questions
She saved my life
She was excellent
Looks at you. Listens. Excellent feedback
Very informative, kind, open minded, intelligent, and well spoken. Also within all these qualities she words things to where you understand. Would recommend to anyone any age.
Listens
Very nice and professional and knowledgeable.