David E. Griffith, MD, is a pulmonologist at National Jewish Health. Dr. Griffith is in the Division of Mycobacterial & Respiratory Infections. My major areas of interest spanning more than 30 years are mycobacterial diseases, including both nontuberculous mycobacterial (NTM) disease and tuberculosis, and bronchiectasis. I started my career in NTM lung disease with the invaluable encouragement of Dr. Richard Wallace more than 30 years ago. In the mid 1980’s there were very few centers interested in NTM lung disease in the United States or anywhere else in the world. Over the last 3 decades I have participated in multiple clinical trials and research projects that have resulted in the establishment of standards for treatment of patients with NTM diseases. I have been fortunate to work in the top two-referral centers for NTM disease in the United States where consultations are provided regionally and nationally to clinicians and patients. I have participated in the development of 3 iterations of nontuberculous mycobacterial disease diagnosis and treatment guidelines (1997, 2007, 2020) including as the principal author for the 2007 American Thoracic Society and Infectious Diseases Society of America Guidelines for the Diagnosis, Treatment and Prevention of Nontuberculous Mycobacterial Diseases. I am author or co-author on approximately 250 peer reviewed publications mostly pertaining to NTM disease including original research manuscripts, book chapters, reviews, editorials and electronic publications.