Dr. Keilp is a neuropsychologist and clinical psychologist with research interests in the assessment of cognitive impairment in psychiatric and neurological disease. His major focus has been on depression and the association of cognitive impairment to suicidal behavior.

He heads the neuropsychology laboratory in the division of Molecular Imaging and Neuropathology at the New York State Psychiatric Institute, and has major collaborations on studies of Lyme disease, predictors of treatment response in affective disorders, and brain imaging.