Our Physicians Anton Porsteinsson, M.D. Dr. Anton Porsteinsson has devoted his career to the care and study of individuals with memory disorders. His clinical and research interests are focused on cognitive deficits and behavioral changes associated with these disorders, especially treatment interventions and improved diagnostics—areas in which he is internationally recognized. Dr. Porsteinsson graduated from the University of Iceland School of Medicine and completed his psychiatry residency at the University of Rochester School of Medicine and Dentistry. He is now the William B. and Sheila Konar Professor of Psychiatry at the University and the Director of the AD-CARE Program. Michael Hasselberg, M.S., N.P., Ph.D. Michael Hasselberg is a certified psychiatric nurse practitioner and recent Ph.D. greaduate in Health Practice Research. He has a special interest in sleep medicine and psychopharmacology.