Grimaldi studied painting and drawing at the New York Studio School, the National Academy, the Art Students League of New York and performed independent studies in anatomy and dissection at the Facultad Medicina in Buenos Aires and Drexel University College of Medicine. He has taught drawing, painting and anatomy for over twenty years at various institutions including the School of Visual Arts, the National Academy, the Pennsylvania Academy of the Fine Arts, the Art Students League of New York and Advanced Artistic Anatomy at Drexel University College of Medicine’s Department of Anatomy and Neuroscience. He has received numerous awards including the Alma Schapiro Prize and Affiliated Fellowship at the American Academy in Rome, the Edward G. McDowell Travel Grant, two Elizabeth Greenshields Foundation Grants and most recently a residency at the Montello Foundation in NE Nevada. He has exhibited at museums and galleries around the world including the Mori Arts Center (Tokyo), the Arnot Museum (Elmira), the National Academy Museum (New York), Beijing Art Museum (Beijing), the Pennsylvania Academy of the Fine Arts Museum (Philadelphia), the Woodmere Art Museum (Philadelphia), Fontbonne University Gallery (St. Louis), de Young Museum (San Francisco), Naples Museum of Art (Naples), John Pence Gallery (San Francisco), Forum Gallery (New York), Hirschl & Adler Modern (New York), Mark Miller Gallery (New York) and Joshua Liner Gallery (New York).