These areas are among Dr. Brennan's clinical interests: kidney stones, hypertension (high blood pressure), and pancreas transplant. His hospital/clinic affiliations include Houston Methodist and St. Joseph Medical Center (Houston, TX). He takes Blue Cross Blue Shield Bronze, Blue Cross Blue Shield HMO, and Blue Cross Blue Shield Gold, in addition to other insurance carriers. New patients are welcome to contact his office for an appointment. He is a graduate of Loyola University Chicago, Stritch School of Medicine. Dr. Brennan has received the distinction of Texas Super Doctors.