He also conducts a clinical practice in cardiovascular pathology providing staffing of autopsy cases and surgical pathology consultation of cardiac and vascular cases and interpretation of myocardial biopsies from referrals. He directs a cardiovascular pathology fellowship approved by the Texas Medical Board. Since the establishment of an Advanced Heart Failure Center on campus, he has served as the cardiovascular pathologist for the Center and has provided staffing for over 100 heart transplants, numerous LVADs, and post-transplant myocardial biopsies for evaluation and grading of antibody-mediated and acute cellular rejection. Dr. Buja serves as a consultant in cardiovascular pathology for the Harris County Institute of Forensic Sciences. He serves as the Director of the DPALM Autopsy Service at the affiliated teaching hospitals and has been an advocate of the importance of the autopsy as a tool in medical research and quality control in healthcare. He is the editor-in-chief of Cardiovascular Pathology, the official journal of the Society for Cardiovascular Pathology. He also serves as the Executive Director of The Texas Medical Center Library located adjacent to the medical school.