O’Hagan is listed in Who’s Who in American Art, and is a Master Pastelist with the Pastel Society of America. In 2005, he was inducted into the International Association of Pastel Societies’ (IAPS) “Masters Circle.” O’Hagan has won several awards in national and international exhibits including IAPS convention exhibit’s Prix’d Pastel Award, “Southwest Art” magazine’s Award of Excellence at the “Altitude & Attitude” Exhibition in Denver, CO. He has also won the George Innes, Jr. Memorial Award from the Salmagundi Club in New York City, and awards from the Pastel Society of America’s annual exhibits.
In September of 2016, O’Hagan was invited to exhibit, conduct workshops and seminars, at the 2nd Biennial China International Pastel Exhibition in Suzhou, China. In December of 2016, F&W Media released four new instructional DVD’s by O‘Hagan; two instructing in pastel painting, and two instructing in oil painting.
In March of 2018, Desmond was awarded Eminent Pastelist status by the Board of Directors of IAPS.
His paintings have been the subject of feature articles in numerous national and international magazines including The Pastel Journal, American Art Collector, Southwest Art, The Artist Magazine, International Artist,American Artist, United Airlines’ Hemispheres magazine, Pratique Des Arts (France), Artists and Illustrators (England), International Artist (Australia), and Gekkan Bijyutsu (Japan). He is also represented in four books. O’Hagan’s art is in public and private collections in the United States, Japan, China, Canada, and Europe. He is represented by galleries in Santa Fe, NM, Charleston, SC, and Desmond O’Hagan studio, Denver.