Dr. Colina graduated from the University of Puerto Rico School of Medicine in 1990. In 1993, he completed his Internal Medicine Residency from Veteran’s Administration Hospital in San Juan, Puerto Rico. In 1997, he completed his Gastroenterology Fellowship from Walter Reed Army Medical Center in Washington, D.C. He was inducted into the Alpha Omega Alpha Medical Honor Society. In 1997, he also published an article on esophageal ulceration in the American Journal of Gastroenterology. He is fluent in Spanish.