O’Hagan was born in Wiesbaden, Germany, and was raised in the United States. He enjoys working in several media, but his primary focus is oils and pastels. Constantly challenging himself has translated into a fulfilling career in fine art encompassing several one-man shows and participation in group exhibitions in the United States, Japan, China, Canada, and France. O’Hagan has achieved “Eminent Pastelist” status with the International Association of Pastel Societies and is a member of their “Masters Circle.” He is also a Master Pastelist with the Pastel Society of America and is listed in Who’s Who in American Art. O’Hagan has won several awards in national and international exhibits including IAPS convention exhibit’s Prix’d Pastel Award and “Southwest Art” magazine’s Award of Excellence (twice) at the “Windows to the Divine” Exhibitions in Denver, CO. He has also won the George Innes, Jr. Memorial Award from the Salmagundi Club in New York City. O’Hagan was invited to exhibit and conduct workshops and seminars at the 2nd Biennial China International Pastel Exhibition in Suzhou, China in 2016. In December of 2016, F&W Media released four new instructional DVD’s by O‘Hagan: two instructing in oil painting, and two instructing in pastel painting. In 2018, four additional instructional videos were released titled Decoding Degas. In these videos, O’Hagan explores the centuries-old practice of copying a master artist from history. His paintings have been the subject of feature articles in numerous national and international magazines including American Art Collector, Southwest Art, The Artist Magazine, International Artist, American Artist, United Airlines’ Hemispheres magazine, Artists and Illustrators (England), International Artist (Australia), and Gekkan Bijyutsu (Japan). He is also represented in five books. O’Hagan’s art is in public and private collections and museums in the U.S., Europe, Canada, Japan, and China, including the Denver Public Library, Robert and Judi Newman Collection, Museum of Pastel Art (Suzhou, China), Loveland Museum (Loveland, CO), Museum of Saint-Aulaye (France), U.S. Marine Corp (Denver, CO), and Ballard Spahr LLP, (Denver, CO). He teaches workshops nationally and internationally and is represented by galleries in Santa Fe, NM, Isle of Palms, SC, and Denver, CO.