She graduated from Medical School, University of Iceland, Reykjavik, Iceland. She attended an internship at the Landspitali University Hospital, Reykjavik, Iceland and then was trained at the department of Internal Medicine, Mayo School of Graduate Medical Education, Mayo Clinic, Rochester, MN. Dr. Thorsteinsdottir has also been a fellow in Medical Ethics at Harvard Medical School, Harvard University, Boston, MA. She is certified by the American Board of Internal Medicine. Her interests include the fields of Ethics, End of life care, Transitions of care, Resource allocation and Health policy.