His clinical practice is split between the Mount Zion Campus, UCSF, and San Francisco General Hospital. He co-directs the HIV Dermatology clinic and the General Dermatology clinics at SFGH. His internal medicine training informs his dermatological practice with complex medical patients. A major clinical and research interest is autoinflammatory syndromes where he has been involved in developing new therapies. In 2011, he was elected fellow of the Royal College of Physicians, London, in recognition of his academic and clinical work.