David J Gullen and his colleagues from Phoenix Medical Associates (PMA) joined the Division of Community Internal Medicine at Mayo Clinic Arizona in 1997 and then the Division of Preventive and Occupational Medicine in 2014. PMA had been established in 1954 and became one of the premier internal medicine practices in Arizona. Dr Gullen is a former Chair of the Board of Directors of the Flinn Foundation, a Master of the American College of Physicians and former Co-director of the physician-patient communication skills curriculum at Mayo. He served as the first Course Director for Advanced Doctoring, a clinical skills course for second year medical students, at the Arizona campus of the Mayo Clinic School of Medicine when it opened in 2017. Previously, he served as Chair of the Board of Regents of the American College of Physicians and Secretary – Treasurer of the American Board of Internal Medicine. Professional interests include general internal medicine, geriatrics and patient-physician communication. A graduate of Princeton University, Dr Gullen received his medical degree from the University of Arizona and a master’s degree in microbiology and immunology from Arizona State University. He completed a residency and chief residency in internal medicine at Strong Memorial Hospital, Rochester, NY, where he spent additional time working with the Medical-Psychiatric liaison group.