Dr. Nathan is a clinical professor of medicine at University of Colorado Health Sciences Center in Denver, Colorado, and has been in private practice at Asthma and Allergy Associates and Research Center in Colorado Springs and Pueblo since 1979. He is certified by the American Board of Internal Medicine and American Board of Allergy and Clinical Immunology. Dr. Nathan has been included in America's Top Doctors and America's Top Physicians, and in 2009 was named by USA Today as one of the most influential physicians in asthma care.
He received his medical degree and training in internal medicine at the University of Miami School of Medicine and affiliated hospitals in Miami, Florida, and completed his fellowship in allergy and immunology at National Jewish Hospital in Denver. Dr. Nathan is a Fellow of the American Academy of Allergy, Asthma and Immunology; the American College of Allergy, Asthma and Immunology; American College of Physicians; and American College of Chest Physicians.
With 30 years of clinical research experience in asthma, allergy and related disorders, Dr. Nathan is recognized internationally as a leader in the field of asthma and allergy research. He serves as a consultant for numerous pharmaceutical companies, and has lectured extensively nationally and internationally on various topics including asthma control and burden of rhinitis. He has also published over 100 articles on the management of allergic diseases.
He is past president of several organizations including the Joint Council of Allergy, Asthma and Immunology, the Colorado Allergy Society; the Western Society of Allergy, Asthma and Immunology; the El Paso County Medical Society, and the Pikes Peak Regional Council of the American Lung Association of Colorado.
Dr. Nathan has an unwavering commitment to his patients. "First and foremost, I try to treat all my patients in the same manner that I would want my family treated. Patients must always be given ample opportunity to discuss why they are seeing me. In return, it is my obligation to explain what role allergies are playing in their symptoms, and how best to deal with them."