Dr. Jonathan Singer is a premier lung transplant patient-oriented researcher.  He is Associate Medical Director of the UCSF Advanced Lung Disease and Lung Transplant Program where he specializes in the care of patients advanced lung disease and patients undergoing lung transplantation.  He founded the Advanced Lung Disease and Transplant research program at UC San Francisco.

His body of work leverages epidemiology, biostatistics, qualitative and mixed-methods to study patient-centered outcomes and their determinants in lung transplantation along three themes: 1) improving transplant candidate risk stratification by investigating frailty and body composition; 2) defining key patient centered outcomes, including functioning, disability, health-related quality of life, and survival; and 3) developing and validating novel measures of frailty for use in advanced lung disease and lung transplantation. His work has defined the fundamental importance of "extra-pulmonary" aging-related factors on outcomes in lung transplantation and the central role that patients' perspectives and needs play in determining transplant success. In each of his research themes of body composition, frailty, and patient-reported outcomes, his work has changed clinical practice, influenced international guidelines, funding agency research priorities, and outcome measures selected for research studies.