Susan J. Lewis, PhD, JD, is a licensed clinical and forensic psychologist and lawyer. She has over 25 years of experience in clinical practice with unique populations that have included female sexual offenders incarcerated at a women’s prison, self-injurious individuals, forensic patients and individuals who suffer from severe and persistent mental illness. In addition to clinical practice, Dr. Lewis has served in leadership roles as clinical director, program manager, and supervisor for psychiatry residents and post-doctoral psychologists.

Dr. Lewis teaches courses on law and ethics in mental health that are state specific to the laws of each state. She has also lectured nationwide on the DSM-5® and differential diagnosis. She taught courses at Harvard’s Extension School and Northeastern University on the psychology of criminal behavior. She is the author of Legal and Ethical Issues for Mental Health Clinicians: Best Practices for Avoiding Litigation, Complaints and Malpractice (PPM, 2016) and her latest book From Deep Within: A Forensic and Clinical Psychologist’s Journey (2018).