- Attending Physician, Dermatology Service, Palo Alto VA Medical Center (1995 - Present)
- Director, Blistering Disease Clinic, Department of Dermatology,
Stanford University School of Medicine (1995 - Present)
- Founding Member/Core Investigator, Program in Epithelial Biology, Stanford University (1999 - Present)
- Member, Cancer Center,
Stanford University School of Medicine (2004 - Present)
- Member, Medical Institutional Review Board 4, Stanford University School of Medicine (2005 - Present)
- Member, Institute for Immunity, Transplantation
and Infection (ITI) (2011 - Present)