Dr Grullon is a board-certified interventional cardiologist with additional board certifications in nuclear cardiology, cardiovascular disease and cardiac CT. A graduate of Tulane University, he earned his medical degree from the respected Universidad Central del Caribe School of Medicine in Puerto Rico and undertook his internal medicine residency at Providence Hospital in Michigan, where he was twice recognized as Outstanding Resident of the Year. He next carried out advanced fellowships in adult cardiovascular medicine and interventional cardiology at the Henry Ford Hospital Heart and Vascular Institute in Detroit.