Dr. Siegler is an Attending Physician at the Weill Cornell Campus of New York-Presbyterian Hospital. She is also Professor of Clinical Medicine and the Mason Adams Professor of Geriatric Medicine at Weill Cornell Medical College, whose faculty she joined in 2000.

After receiving her undergraduate degree in Biochemical Sciences from Princeton University, Dr. Siegler obtained her M.D. from Johns Hopkins University School of Medicine. She trained in Internal Medicine at Bellevue and New York University Hospitals, where she was intern, resident, and chief resident. Following residency, Dr. Siegler completed her fellowship in General Internal Medicine and Geriatrics at the University of Pennsylvania.

Dr. Siegler is a member of many organizations in her field, including the American College of Physicians, the Gerontological Society of America, and the American Geriatrics Society. Dr. Siegler is actively involved in departmental and hospital Quality Improvement activities and she is Associate Program Director for the Internal Medicine Residency. She spends most of her time caring for patients and teaching geriatrics; her scholarly work has focused most recently on the needs of people aging with HIV.

Dr. Siegler is dedicated to promoting comprehensive, compassionate care of older people. She is an attending on the inpatient geriatric service and sees outpatients at the Center on Aging and the Center for Special Studies.