Dr. Manuel Antonio Santiago, MD

Dr. Manuel Santiago specializes in oncology with additional expertise in internal medicine. He earned his medical degree from the University of Puerto Rico School of Medicine and completed his residency at Duke University Medical Center. With four decades of clinical experience, Dr. Santiago brings extensive knowledge to cancer care and general internal medicine. He is fluent in both English and Spanish.

Dr. Santiago practices at Saint Lukes Baptist Hospital and provides care at multiple locations throughout San Antonio, Texas. His oncology expertise focuses on treating breast cancer, including complex cases involving metastatic or recurrent breast cancer and Paget disease of the breast. He performs essential diagnostic procedures such as complete blood counts, white blood cell differentials, and comprehensive metabolic panels to monitor patient health and treatment progress. Patients have given Dr. Santiago an average rating of 4.3 stars.