Pei, Chen M.D.Attending and Clinical Associalte ProfessorGeriatric Medicine Internal Medicine Education: University of Vermont College of MedicineMain Office:415 353-4900 UCSF Health 3575 Geary Blvd First Floor San Francisco, CA 94118 Clinic Intersts:complex medical conditions and syndromes related to age, such as falls, frailty, delirium and dementia.