Ann Mass, MD practices internal medicine in Aspen, Colorado. A native New Yorker, she graduated from Barnard College and A.O.A. from Harvard Medical School. Her practice has increasingly focused on early disease detection, using advanced lipid screens , bio-markers, and scans. She has a strong interest in metabolic bone disease and is a member of the International Society for Clinical Densitometry. Dr. Mass is an assistant clinical professor at the University of Colorado Medical School and is involved in rural health care reform through the Colorado Medical Society. She is a contributor to several publications with medical book reviews and topics pertinent to the practice of medicine in the private sector.